Momentum-Apps/web_crawler/flipper_http.h

// flipper_http.h
#ifndef FLIPPER_HTTP_H
#define FLIPPER_HTTP_H

#include <furi.h>
#include <furi_hal.h>
#include <furi_hal_gpio.h>
#include <furi_hal_serial.h>
#include <storage/storage.h>

// STORAGE_EXT_PATH_PREFIX is defined in the Furi SDK as /ext

#define HTTP_TAG               "WebCrawler" // change this to your app name
#define http_tag               "web_crawler" // change this to your app id
#define UART_CH                (FuriHalSerialIdUsart) // UART channel
#define TIMEOUT_DURATION_TICKS (3 * 1000) // 3 seconds
#define BAUDRATE               (115200) // UART baudrate
#define RX_BUF_SIZE            2048 // UART RX buffer size
#define RX_LINE_BUFFER_SIZE    2048 // UART RX line buffer size (increase for large responses)
#define MAX_FILE_SHOW          5000 // Maximum data from file to show

// Forward declaration for callback
typedef void (*FlipperHTTP_Callback)(const char* line, void* context);

// Functions
bool flipper_http_init(FlipperHTTP_Callback callback, void* context);
void flipper_http_deinit();
//---
void flipper_http_rx_callback(const char* line, void* context);
bool flipper_http_send_data(const char* data);
//---
bool flipper_http_connect_wifi();
bool flipper_http_disconnect_wifi();
bool flipper_http_ping();
bool flipper_http_scan_wifi();
bool flipper_http_save_wifi(const char* ssid, const char* password);
bool flipper_http_ip_wifi();
bool flipper_http_ip_address();
//---
bool flipper_http_list_commands();
bool flipper_http_led_on();
bool flipper_http_led_off();
bool flipper_http_parse_json(const char* key, const char* json_data);
bool flipper_http_parse_json_array(const char* key, int index, const char* json_data);
//---
bool flipper_http_get_request(const char* url);
bool flipper_http_get_request_with_headers(const char* url, const char* headers);
bool flipper_http_post_request_with_headers(
    const char* url,
    const char* headers,
    const char* payload);
bool flipper_http_put_request_with_headers(
    const char* url,
    const char* headers,
    const char* payload);
bool flipper_http_delete_request_with_headers(
    const char* url,
    const char* headers,
    const char* payload);
//---
bool flipper_http_get_request_bytes(const char* url, const char* headers);
bool flipper_http_post_request_bytes(const char* url, const char* headers, const char* payload);
//
bool flipper_http_append_to_file(
    const void* data,
    size_t data_size,
    bool start_new_file,
    char* file_path);

FuriString* flipper_http_load_from_file(char* file_path);
static char* trim(const char* str);
//
bool flipper_http_process_response_async(bool (*http_request)(void), bool (*parse_json)(void));

// State variable to track the UART state
typedef enum {
    INACTIVE, // Inactive state
    IDLE, // Default state
    RECEIVING, // Receiving data
    SENDING, // Sending data
    ISSUE, // Issue with connection
} SerialState;

// Event Flags for UART Worker Thread
typedef enum {
    WorkerEvtStop = (1 << 0),
    WorkerEvtRxDone = (1 << 1),
} WorkerEvtFlags;

// FlipperHTTP Structure
typedef struct {
    FuriStreamBuffer* flipper_http_stream; // Stream buffer for UART communication
    FuriHalSerialHandle* serial_handle; // Serial handle for UART communication
    FuriThread* rx_thread; // Worker thread for UART
    FuriThreadId rx_thread_id; // Worker thread ID
    FlipperHTTP_Callback handle_rx_line_cb; // Callback for received lines
    void* callback_context; // Context for the callback
    SerialState state; // State of the UART

    // variable to store the last received data from the UART
    char* last_response;
    char file_path[256]; // Path to save the received data

    // Timer-related members
    FuriTimer* get_timeout_timer; // Timer for HTTP request timeout

    bool started_receiving_get; // Indicates if a GET request has started
    bool just_started_get; // Indicates if GET data reception has just started

    bool started_receiving_post; // Indicates if a POST request has started
    bool just_started_post; // Indicates if POST data reception has just started

    bool started_receiving_put; // Indicates if a PUT request has started
    bool just_started_put; // Indicates if PUT data reception has just started

    bool started_receiving_delete; // Indicates if a DELETE request has started
    bool just_started_delete; // Indicates if DELETE data reception has just started

    // Buffer to hold the raw bytes received from the UART
    uint8_t* received_bytes;
    size_t received_bytes_len; // Length of the received bytes
    bool is_bytes_request; // Flag to indicate if the request is for bytes
    bool save_bytes; // Flag to save the received data to a file
    bool save_received_data; // Flag to save the received data to a file
} FlipperHTTP;

static FlipperHTTP fhttp;
// Global static array for the line buffer
static char rx_line_buffer[RX_LINE_BUFFER_SIZE];
#define FILE_BUFFER_SIZE 512
static uint8_t file_buffer[FILE_BUFFER_SIZE];

// fhttp.last_response holds the last received data from the UART, which could be [GET/END], [POST/END], [PUT/END], [DELETE/END], etc

// Function to append received data to file
// make sure to initialize the file path before calling this function
bool flipper_http_append_to_file(
    const void* data,
    size_t data_size,
    bool start_new_file,
    char* file_path) {
    Storage* storage = furi_record_open(RECORD_STORAGE);
    File* file = storage_file_alloc(storage);

    if(start_new_file) {
        // Open the file in write mode
        if(!storage_file_open(file, file_path, FSAM_WRITE, FSOM_CREATE_ALWAYS)) {
            FURI_LOG_E(HTTP_TAG, "Failed to open file for writing: %s", file_path);
            storage_file_free(file);
            furi_record_close(RECORD_STORAGE);
            return false;
        }
    } else {
        // Open the file in append mode
        if(!storage_file_open(file, file_path, FSAM_WRITE, FSOM_OPEN_APPEND)) {
            FURI_LOG_E(HTTP_TAG, "Failed to open file for appending: %s", file_path);
            storage_file_free(file);
            furi_record_close(RECORD_STORAGE);
            return false;
        }
    }

    // Write the data to the file
    if(storage_file_write(file, data, data_size) != data_size) {
        FURI_LOG_E(HTTP_TAG, "Failed to append data to file");
        storage_file_close(file);
        storage_file_free(file);
        furi_record_close(RECORD_STORAGE);
        return false;
    }

    storage_file_close(file);
    storage_file_free(file);
    furi_record_close(RECORD_STORAGE);
    return true;
}

FuriString* flipper_http_load_from_file(char* file_path) {
    // Open the storage record
    Storage* storage = furi_record_open(RECORD_STORAGE);
    if(!storage) {
        FURI_LOG_E(HTTP_TAG, "Failed to open storage record");
        return NULL;
    }

    // Allocate a file handle
    File* file = storage_file_alloc(storage);
    if(!file) {
        FURI_LOG_E(HTTP_TAG, "Failed to allocate storage file");
        furi_record_close(RECORD_STORAGE);
        return NULL;
    }

    // Open the file for reading
    if(!storage_file_open(file, file_path, FSAM_READ, FSOM_OPEN_EXISTING)) {
        storage_file_free(file);
        furi_record_close(RECORD_STORAGE);
        return NULL; // Return false if the file does not exist
    }

    // Allocate a FuriString to hold the received data
    FuriString* str_result = furi_string_alloc();
    if(!str_result) {
        FURI_LOG_E(HTTP_TAG, "Failed to allocate FuriString");
        storage_file_close(file);
        storage_file_free(file);
        furi_record_close(RECORD_STORAGE);
        return NULL;
    }

    // Reset the FuriString to ensure it's empty before reading
    furi_string_reset(str_result);

    // Define a buffer to hold the read data
    uint8_t* buffer = (uint8_t*)malloc(MAX_FILE_SHOW);
    if(!buffer) {
        FURI_LOG_E(HTTP_TAG, "Failed to allocate buffer");
        furi_string_free(str_result);
        storage_file_close(file);
        storage_file_free(file);
        furi_record_close(RECORD_STORAGE);
        return NULL;
    }

    // Read data into the buffer
    size_t read_count = storage_file_read(file, buffer, MAX_FILE_SHOW);
    if(storage_file_get_error(file) != FSE_OK) {
        FURI_LOG_E(HTTP_TAG, "Error reading from file.");
        furi_string_free(str_result);
        storage_file_close(file);
        storage_file_free(file);
        furi_record_close(RECORD_STORAGE);
        return false;
    }

    // Append each byte to the FuriString
    for(size_t i = 0; i < read_count; i++) {
        furi_string_push_back(str_result, buffer[i]);
    }

    // Check if there is more data beyond the maximum size
    char extra_byte;
    storage_file_read(file, &extra_byte, 1);

    // Clean up
    storage_file_close(file);
    storage_file_free(file);
    furi_record_close(RECORD_STORAGE);
    free(buffer);
    return str_result;
}

// UART worker thread
/**
 * @brief      Worker thread to handle UART data asynchronously.
 * @return     0
 * @param      context   The context to pass to the callback.
 * @note       This function will handle received data asynchronously via the callback.
 */
// UART worker thread
static int32_t flipper_http_worker(void* context) {
    UNUSED(context);
    size_t rx_line_pos = 0;
    static size_t file_buffer_len = 0;

    while(1) {
        uint32_t events = furi_thread_flags_wait(
            WorkerEvtStop | WorkerEvtRxDone, FuriFlagWaitAny, FuriWaitForever);
        if(events & WorkerEvtStop) break;
        if(events & WorkerEvtRxDone) {
            // Continuously read from the stream buffer until it's empty
            while(!furi_stream_buffer_is_empty(fhttp.flipper_http_stream)) {
                // Read one byte at a time
                char c = 0;
                size_t received = furi_stream_buffer_receive(fhttp.flipper_http_stream, &c, 1, 0);

                if(received == 0) {
                    // No more data to read
                    break;
                }

                // Append the received byte to the file if saving is enabled
                if(fhttp.save_bytes) {
                    // Add byte to the buffer
                    file_buffer[file_buffer_len++] = c;
                    // Write to file if buffer is full
                    if(file_buffer_len >= FILE_BUFFER_SIZE) {
                        if(!flipper_http_append_to_file(
                               file_buffer, file_buffer_len, false, fhttp.file_path)) {
                            FURI_LOG_E(HTTP_TAG, "Failed to append data to file");
                        }
                        file_buffer_len = 0;
                    }
                }

                // Handle line buffering only if callback is set (text data)
                if(fhttp.handle_rx_line_cb) {
                    // Handle line buffering
                    if(c == '\n' || rx_line_pos >= RX_LINE_BUFFER_SIZE - 1) {
                        rx_line_buffer[rx_line_pos] = '\0'; // Null-terminate the line

                        // Invoke the callback with the complete line
                        fhttp.handle_rx_line_cb(rx_line_buffer, fhttp.callback_context);

                        // save the received data

                        // Reset the line buffer position
                        rx_line_pos = 0;
                    } else {
                        rx_line_buffer[rx_line_pos++] = c; // Add character to the line buffer
                    }
                }
            }
        }
    }

    if(fhttp.save_bytes) {
        // Write the remaining data to the file
        if(file_buffer_len > 0) {
            if(!flipper_http_append_to_file(file_buffer, file_buffer_len, false, fhttp.file_path)) {
                FURI_LOG_E(HTTP_TAG, "Failed to append remaining data to file");
            }
        }
    }

    // remove [POST/END] and/or [GET/END] from the file
    if(fhttp.save_bytes) {
        char* end = NULL;
        if((end = strstr(fhttp.file_path, "[POST/END]")) != NULL) {
            *end = '\0';
        } else if((end = strstr(fhttp.file_path, "[GET/END]")) != NULL) {
            *end = '\0';
        }
    }

    // remove newline from the from the end of the file
    if(fhttp.save_bytes) {
        char* end = NULL;
        if((end = strstr(fhttp.file_path, "\n")) != NULL) {
            *end = '\0';
        }
    }

    // Reset the file buffer length
    file_buffer_len = 0;

    return 0;
}
// Timer callback function
/**
 * @brief      Callback function for the GET timeout timer.
 * @return     0
 * @param      context   The context to pass to the callback.
 * @note       This function will be called when the GET request times out.
 */
void get_timeout_timer_callback(void* context) {
    UNUSED(context);
    FURI_LOG_E(HTTP_TAG, "Timeout reached: 2 seconds without receiving the end.");

    // Reset the state
    fhttp.started_receiving_get = false;
    fhttp.started_receiving_post = false;
    fhttp.started_receiving_put = false;
    fhttp.started_receiving_delete = false;

    // Update UART state
    fhttp.state = ISSUE;
}

// UART RX Handler Callback (Interrupt Context)
/**
 * @brief      A private callback function to handle received data asynchronously.
 * @return     void
 * @param      handle    The UART handle.
 * @param      event     The event type.
 * @param      context   The context to pass to the callback.
 * @note       This function will handle received data asynchronously via the callback.
 */
static void _flipper_http_rx_callback(
    FuriHalSerialHandle* handle,
    FuriHalSerialRxEvent event,
    void* context) {
    UNUSED(context);
    if(event == FuriHalSerialRxEventData) {
        uint8_t data = furi_hal_serial_async_rx(handle);
        furi_stream_buffer_send(fhttp.flipper_http_stream, &data, 1, 0);
        furi_thread_flags_set(fhttp.rx_thread_id, WorkerEvtRxDone);
    }
}

// UART initialization function
/**
 * @brief      Initialize UART.
 * @return     true if the UART was initialized successfully, false otherwise.
 * @param      callback  The callback function to handle received data (ex. flipper_http_rx_callback).
 * @param      context   The context to pass to the callback.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_init(FlipperHTTP_Callback callback, void* context) {
    if(!context) {
        FURI_LOG_E(HTTP_TAG, "Invalid context provided to flipper_http_init.");
        return false;
    }
    if(!callback) {
        FURI_LOG_E(HTTP_TAG, "Invalid callback provided to flipper_http_init.");
        return false;
    }
    fhttp.flipper_http_stream = furi_stream_buffer_alloc(RX_BUF_SIZE, 1);
    if(!fhttp.flipper_http_stream) {
        FURI_LOG_E(HTTP_TAG, "Failed to allocate UART stream buffer.");
        return false;
    }

    fhttp.rx_thread = furi_thread_alloc();
    if(!fhttp.rx_thread) {
        FURI_LOG_E(HTTP_TAG, "Failed to allocate UART thread.");
        furi_stream_buffer_free(fhttp.flipper_http_stream);
        return false;
    }

    furi_thread_set_name(fhttp.rx_thread, "FlipperHTTP_RxThread");
    furi_thread_set_stack_size(fhttp.rx_thread, 1024);
    furi_thread_set_context(fhttp.rx_thread, &fhttp);
    furi_thread_set_callback(fhttp.rx_thread, flipper_http_worker);

    fhttp.handle_rx_line_cb = callback;
    fhttp.callback_context = context;

    furi_thread_start(fhttp.rx_thread);
    fhttp.rx_thread_id = furi_thread_get_id(fhttp.rx_thread);

    // handle when the UART control is busy to avoid furi_check failed
    if(furi_hal_serial_control_is_busy(UART_CH)) {
        FURI_LOG_E(HTTP_TAG, "UART control is busy.");
        return false;
    }

    fhttp.serial_handle = furi_hal_serial_control_acquire(UART_CH);
    if(!fhttp.serial_handle) {
        FURI_LOG_E(HTTP_TAG, "Failed to acquire UART control - handle is NULL");
        // Cleanup resources
        furi_thread_free(fhttp.rx_thread);
        furi_stream_buffer_free(fhttp.flipper_http_stream);
        return false;
    }

    // Initialize UART with acquired handle
    furi_hal_serial_init(fhttp.serial_handle, BAUDRATE);

    // Enable RX direction
    furi_hal_serial_enable_direction(fhttp.serial_handle, FuriHalSerialDirectionRx);

    // Start asynchronous RX with the callback
    furi_hal_serial_async_rx_start(fhttp.serial_handle, _flipper_http_rx_callback, &fhttp, false);

    // Wait for the TX to complete to ensure UART is ready
    furi_hal_serial_tx_wait_complete(fhttp.serial_handle);

    // Allocate the timer for handling timeouts
    fhttp.get_timeout_timer = furi_timer_alloc(
        get_timeout_timer_callback, // Callback function
        FuriTimerTypeOnce, // One-shot timer
        &fhttp // Context passed to callback
    );

    if(!fhttp.get_timeout_timer) {
        FURI_LOG_E(HTTP_TAG, "Failed to allocate HTTP request timeout timer.");
        // Cleanup resources
        furi_hal_serial_async_rx_stop(fhttp.serial_handle);
        furi_hal_serial_disable_direction(fhttp.serial_handle, FuriHalSerialDirectionRx);
        furi_hal_serial_control_release(fhttp.serial_handle);
        furi_hal_serial_deinit(fhttp.serial_handle);
        furi_thread_flags_set(fhttp.rx_thread_id, WorkerEvtStop);
        furi_thread_join(fhttp.rx_thread);
        furi_thread_free(fhttp.rx_thread);
        furi_stream_buffer_free(fhttp.flipper_http_stream);
        return false;
    }

    // Set the timer thread priority if needed
    furi_timer_set_thread_priority(FuriTimerThreadPriorityElevated);

    fhttp.last_response = (char*)malloc(RX_BUF_SIZE);
    if(!fhttp.last_response) {
        FURI_LOG_E(HTTP_TAG, "Failed to allocate memory for last_response.");
        return false;
    }

    // FURI_LOG_I(HTTP_TAG, "UART initialized successfully.");
    return true;
}

// Deinitialize UART
/**
 * @brief      Deinitialize UART.
 * @return     void
 * @note       This function will stop the asynchronous RX, release the serial handle, and free the resources.
 */
void flipper_http_deinit() {
    if(fhttp.serial_handle == NULL) {
        FURI_LOG_E(HTTP_TAG, "UART handle is NULL. Already deinitialized?");
        return;
    }
    // Stop asynchronous RX
    furi_hal_serial_async_rx_stop(fhttp.serial_handle);

    // Release and deinitialize the serial handle
    furi_hal_serial_disable_direction(fhttp.serial_handle, FuriHalSerialDirectionRx);
    furi_hal_serial_control_release(fhttp.serial_handle);
    furi_hal_serial_deinit(fhttp.serial_handle);

    // Signal the worker thread to stop
    furi_thread_flags_set(fhttp.rx_thread_id, WorkerEvtStop);
    // Wait for the thread to finish
    furi_thread_join(fhttp.rx_thread);
    // Free the thread resources
    furi_thread_free(fhttp.rx_thread);

    // Free the stream buffer
    furi_stream_buffer_free(fhttp.flipper_http_stream);

    // Free the timer
    if(fhttp.get_timeout_timer) {
        furi_timer_free(fhttp.get_timeout_timer);
        fhttp.get_timeout_timer = NULL;
    }

    // Free the last response
    if(fhttp.last_response) {
        free(fhttp.last_response);
        fhttp.last_response = NULL;
    }

    // FURI_LOG_I("FlipperHTTP", "UART deinitialized successfully.");
}

// Function to send data over UART with newline termination
/**
 * @brief      Send data over UART with newline termination.
 * @return     true if the data was sent successfully, false otherwise.
 * @param      data  The data to send over UART.
 * @note       The data will be sent over UART with a newline character appended.
 */
bool flipper_http_send_data(const char* data) {
    size_t data_length = strlen(data);
    if(data_length == 0) {
        FURI_LOG_E("FlipperHTTP", "Attempted to send empty data.");
        return false;
    }

    // Create a buffer with data + '\n'
    size_t send_length = data_length + 1; // +1 for '\n'
    if(send_length > 256) { // Ensure buffer size is sufficient
        FURI_LOG_E("FlipperHTTP", "Data too long to send over FHTTP.");
        return false;
    }

    char send_buffer[257]; // 256 + 1 for safety
    strncpy(send_buffer, data, 256);
    send_buffer[data_length] = '\n'; // Append newline
    send_buffer[data_length + 1] = '\0'; // Null-terminate

    if(fhttp.state == INACTIVE && ((strstr(send_buffer, "[PING]") == NULL) &&
                                   (strstr(send_buffer, "[WIFI/CONNECT]") == NULL))) {
        FURI_LOG_E("FlipperHTTP", "Cannot send data while INACTIVE.");
        fhttp.last_response = "Cannot send data while INACTIVE.";
        return false;
    }

    fhttp.state = SENDING;
    furi_hal_serial_tx(fhttp.serial_handle, (const uint8_t*)send_buffer, send_length);

    // Uncomment below line to log the data sent over UART
    // FURI_LOG_I("FlipperHTTP", "Sent data over UART: %s", send_buffer);
    fhttp.state = IDLE;
    return true;
}

// Function to send a PING request
/**
 * @brief      Send a PING request to check if the Wifi Dev Board is connected.
 * @return     true if the request was successful, false otherwise.
 * @note       The received data will be handled asynchronously via the callback.
 * @note       This is best used to check if the Wifi Dev Board is connected.
 * @note       The state will remain INACTIVE until a PONG is received.
 */
bool flipper_http_ping() {
    const char* command = "[PING]";
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send PING command.");
        return false;
    }
    // set state as INACTIVE to be made IDLE if PONG is received
    fhttp.state = INACTIVE;
    // The response will be handled asynchronously via the callback
    return true;
}

// Function to list available commands
/**
 * @brief      Send a command to list available commands.
 * @return     true if the request was successful, false otherwise.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_list_commands() {
    const char* command = "[LIST]";
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send LIST command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to turn on the LED
/**
 * @brief      Allow the LED to display while processing.
 * @return     true if the request was successful, false otherwise.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_led_on() {
    const char* command = "[LED/ON]";
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send LED ON command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to turn off the LED
/**
 * @brief      Disable the LED from displaying while processing.
 * @return     true if the request was successful, false otherwise.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_led_off() {
    const char* command = "[LED/OFF]";
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send LED OFF command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to parse JSON data
/**
 * @brief      Parse JSON data.
 * @return     true if the JSON data was parsed successfully, false otherwise.
 * @param      key       The key to parse from the JSON data.
 * @param      json_data The JSON data to parse.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_parse_json(const char* key, const char* json_data) {
    if(!key || !json_data) {
        FURI_LOG_E("FlipperHTTP", "Invalid arguments provided to flipper_http_parse_json.");
        return false;
    }

    char buffer[256];
    int ret =
        snprintf(buffer, sizeof(buffer), "[PARSE]{\"key\":\"%s\",\"json\":%s}", key, json_data);
    if(ret < 0 || ret >= (int)sizeof(buffer)) {
        FURI_LOG_E("FlipperHTTP", "Failed to format JSON parse command.");
        return false;
    }

    if(!flipper_http_send_data(buffer)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send JSON parse command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to parse JSON array data
/**
 * @brief      Parse JSON array data.
 * @return     true if the JSON array data was parsed successfully, false otherwise.
 * @param      key       The key to parse from the JSON array data.
 * @param      index     The index to parse from the JSON array data.
 * @param      json_data The JSON array data to parse.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_parse_json_array(const char* key, int index, const char* json_data) {
    if(!key || !json_data) {
        FURI_LOG_E("FlipperHTTP", "Invalid arguments provided to flipper_http_parse_json_array.");
        return false;
    }

    char buffer[256];
    int ret = snprintf(
        buffer,
        sizeof(buffer),
        "[PARSE/ARRAY]{\"key\":\"%s\",\"index\":%d,\"json\":%s}",
        key,
        index,
        json_data);
    if(ret < 0 || ret >= (int)sizeof(buffer)) {
        FURI_LOG_E("FlipperHTTP", "Failed to format JSON parse array command.");
        return false;
    }

    if(!flipper_http_send_data(buffer)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send JSON parse array command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to scan for WiFi networks
/**
 * @brief      Send a command to scan for WiFi networks.
 * @return     true if the request was successful, false otherwise.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_scan_wifi() {
    const char* command = "[WIFI/SCAN]";
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send WiFi scan command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to save WiFi settings (returns true if successful)
/**
 * @brief      Send a command to save WiFi settings.
 * @return     true if the request was successful, false otherwise.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_save_wifi(const char* ssid, const char* password) {
    if(!ssid || !password) {
        FURI_LOG_E("FlipperHTTP", "Invalid arguments provided to flipper_http_save_wifi.");
        return false;
    }
    char buffer[256];
    int ret = snprintf(
        buffer, sizeof(buffer), "[WIFI/SAVE]{\"ssid\":\"%s\",\"password\":\"%s\"}", ssid, password);
    if(ret < 0 || ret >= (int)sizeof(buffer)) {
        FURI_LOG_E("FlipperHTTP", "Failed to format WiFi save command.");
        return false;
    }

    if(!flipper_http_send_data(buffer)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send WiFi save command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to get IP address of WiFi Devboard
/**
 * @brief      Send a command to get the IP address of the WiFi Devboard
 * @return     true if the request was successful, false otherwise.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_ip_address() {
    const char* command = "[IP/ADDRESS]";
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send IP address command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to get IP address of the connected WiFi network
/**
 * @brief      Send a command to get the IP address of the connected WiFi network.
 * @return     true if the request was successful, false otherwise.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_ip_wifi() {
    const char* command = "[WIFI/IP]";
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send WiFi IP command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to disconnect from WiFi (returns true if successful)
/**
 * @brief      Send a command to disconnect from WiFi.
 * @return     true if the request was successful, false otherwise.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_disconnect_wifi() {
    const char* command = "[WIFI/DISCONNECT]";
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send WiFi disconnect command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to connect to WiFi (returns true if successful)
/**
 * @brief      Send a command to connect to WiFi.
 * @return     true if the request was successful, false otherwise.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_connect_wifi() {
    const char* command = "[WIFI/CONNECT]";
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send WiFi connect command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}

// Function to send a GET request
/**
 * @brief      Send a GET request to the specified URL.
 * @return     true if the request was successful, false otherwise.
 * @param      url  The URL to send the GET request to.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_get_request(const char* url) {
    if(!url) {
        FURI_LOG_E("FlipperHTTP", "Invalid arguments provided to flipper_http_get_request.");
        return false;
    }

    // Prepare GET request command
    char command[256];
    int ret = snprintf(command, sizeof(command), "[GET]%s", url);
    if(ret < 0 || ret >= (int)sizeof(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to format GET request command.");
        return false;
    }

    // Send GET request via UART
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send GET request command.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}
// Function to send a GET request with headers
/**
 * @brief      Send a GET request to the specified URL.
 * @return     true if the request was successful, false otherwise.
 * @param      url  The URL to send the GET request to.
 * @param      headers  The headers to send with the GET request.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_get_request_with_headers(const char* url, const char* headers) {
    if(!url || !headers) {
        FURI_LOG_E(
            "FlipperHTTP", "Invalid arguments provided to flipper_http_get_request_with_headers.");
        return false;
    }

    // Prepare GET request command with headers
    char command[256];
    int ret = snprintf(
        command, sizeof(command), "[GET/HTTP]{\"url\":\"%s\",\"headers\":%s}", url, headers);
    if(ret < 0 || ret >= (int)sizeof(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to format GET request command with headers.");
        return false;
    }

    // Send GET request via UART
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send GET request command with headers.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}
// Function to send a GET request with headers and return bytes
/**
 * @brief      Send a GET request to the specified URL.
 * @return     true if the request was successful, false otherwise.
 * @param      url  The URL to send the GET request to.
 * @param      headers  The headers to send with the GET request.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_get_request_bytes(const char* url, const char* headers) {
    if(!url || !headers) {
        FURI_LOG_E("FlipperHTTP", "Invalid arguments provided to flipper_http_get_request_bytes.");
        return false;
    }

    // Prepare GET request command with headers
    char command[256];
    int ret = snprintf(
        command, sizeof(command), "[GET/BYTES]{\"url\":\"%s\",\"headers\":%s}", url, headers);
    if(ret < 0 || ret >= (int)sizeof(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to format GET request command with headers.");
        return false;
    }

    // Send GET request via UART
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send GET request command with headers.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}
// Function to send a POST request with headers
/**
 * @brief      Send a POST request to the specified URL.
 * @return     true if the request was successful, false otherwise.
 * @param      url  The URL to send the POST request to.
 * @param      headers  The headers to send with the POST request.
 * @param      data  The data to send with the POST request.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_post_request_with_headers(
    const char* url,
    const char* headers,
    const char* payload) {
    if(!url || !headers || !payload) {
        FURI_LOG_E(
            "FlipperHTTP",
            "Invalid arguments provided to flipper_http_post_request_with_headers.");
        return false;
    }

    // Prepare POST request command with headers and data
    char command[256];
    int ret = snprintf(
        command,
        sizeof(command),
        "[POST/HTTP]{\"url\":\"%s\",\"headers\":%s,\"payload\":%s}",
        url,
        headers,
        payload);
    if(ret < 0 || ret >= (int)sizeof(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to format POST request command with headers and data.");
        return false;
    }

    // Send POST request via UART
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send POST request command with headers and data.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}
// Function to send a POST request with headers and return bytes
/**
 * @brief      Send a POST request to the specified URL.
 * @return     true if the request was successful, false otherwise.
 * @param      url  The URL to send the POST request to.
 * @param      headers  The headers to send with the POST request.
 * @param      payload  The data to send with the POST request.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_post_request_bytes(const char* url, const char* headers, const char* payload) {
    if(!url || !headers || !payload) {
        FURI_LOG_E(
            "FlipperHTTP", "Invalid arguments provided to flipper_http_post_request_bytes.");
        return false;
    }

    // Prepare POST request command with headers and data
    char command[256];
    int ret = snprintf(
        command,
        sizeof(command),
        "[POST/BYTES]{\"url\":\"%s\",\"headers\":%s,\"payload\":%s}",
        url,
        headers,
        payload);
    if(ret < 0 || ret >= (int)sizeof(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to format POST request command with headers and data.");
        return false;
    }

    // Send POST request via UART
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send POST request command with headers and data.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}
// Function to send a PUT request with headers
/**
 * @brief      Send a PUT request to the specified URL.
 * @return     true if the request was successful, false otherwise.
 * @param      url  The URL to send the PUT request to.
 * @param      headers  The headers to send with the PUT request.
 * @param      data  The data to send with the PUT request.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_put_request_with_headers(
    const char* url,
    const char* headers,
    const char* payload) {
    if(!url || !headers || !payload) {
        FURI_LOG_E(
            "FlipperHTTP", "Invalid arguments provided to flipper_http_put_request_with_headers.");
        return false;
    }

    // Prepare PUT request command with headers and data
    char command[256];
    int ret = snprintf(
        command,
        sizeof(command),
        "[PUT/HTTP]{\"url\":\"%s\",\"headers\":%s,\"payload\":%s}",
        url,
        headers,
        payload);
    if(ret < 0 || ret >= (int)sizeof(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to format PUT request command with headers and data.");
        return false;
    }

    // Send PUT request via UART
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send PUT request command with headers and data.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}
// Function to send a DELETE request with headers
/**
 * @brief      Send a DELETE request to the specified URL.
 * @return     true if the request was successful, false otherwise.
 * @param      url  The URL to send the DELETE request to.
 * @param      headers  The headers to send with the DELETE request.
 * @param      data  The data to send with the DELETE request.
 * @note       The received data will be handled asynchronously via the callback.
 */
bool flipper_http_delete_request_with_headers(
    const char* url,
    const char* headers,
    const char* payload) {
    if(!url || !headers || !payload) {
        FURI_LOG_E(
            "FlipperHTTP",
            "Invalid arguments provided to flipper_http_delete_request_with_headers.");
        return false;
    }

    // Prepare DELETE request command with headers and data
    char command[256];
    int ret = snprintf(
        command,
        sizeof(command),
        "[DELETE/HTTP]{\"url\":\"%s\",\"headers\":%s,\"payload\":%s}",
        url,
        headers,
        payload);
    if(ret < 0 || ret >= (int)sizeof(command)) {
        FURI_LOG_E(
            "FlipperHTTP", "Failed to format DELETE request command with headers and data.");
        return false;
    }

    // Send DELETE request via UART
    if(!flipper_http_send_data(command)) {
        FURI_LOG_E("FlipperHTTP", "Failed to send DELETE request command with headers and data.");
        return false;
    }

    // The response will be handled asynchronously via the callback
    return true;
}
// Function to handle received data asynchronously
/**
 * @brief      Callback function to handle received data asynchronously.
 * @return     void
 * @param      line     The received line.
 * @param      context  The context passed to the callback.
 * @note       The received data will be handled asynchronously via the callback and handles the state of the UART.
 */
void flipper_http_rx_callback(const char* line, void* context) {
    if(!line || !context) {
        FURI_LOG_E(HTTP_TAG, "Invalid arguments provided to flipper_http_rx_callback.");
        return;
    }

    // Trim the received line to check if it's empty
    char* trimmed_line = trim(line);
    if(trimmed_line != NULL && trimmed_line[0] != '\0') {
        // if the line is not [GET/END] or [POST/END] or [PUT/END] or [DELETE/END]
        if(strstr(trimmed_line, "[GET/END]") == NULL &&
           strstr(trimmed_line, "[POST/END]") == NULL &&
           strstr(trimmed_line, "[PUT/END]") == NULL &&
           strstr(trimmed_line, "[DELETE/END]") == NULL) {
            strncpy(fhttp.last_response, trimmed_line, RX_BUF_SIZE);
        }
    }
    free(trimmed_line); // Free the allocated memory for trimmed_line

    if(fhttp.state != INACTIVE && fhttp.state != ISSUE) {
        fhttp.state = RECEIVING;
    }

    // Uncomment below line to log the data received over UART
    FURI_LOG_I(HTTP_TAG, "Received UART line: %s", line);

    // Check if we've started receiving data from a GET request
    if(fhttp.started_receiving_get) {
        // Restart the timeout timer each time new data is received
        furi_timer_restart(fhttp.get_timeout_timer, TIMEOUT_DURATION_TICKS);

        if(strstr(line, "[GET/END]") != NULL) {
            FURI_LOG_I(HTTP_TAG, "GET request completed.");
            // Stop the timer since we've completed the GET request
            furi_timer_stop(fhttp.get_timeout_timer);
            fhttp.started_receiving_get = false;
            fhttp.just_started_get = false;
            fhttp.state = IDLE;
            fhttp.save_bytes = false;
            fhttp.is_bytes_request = false;
            fhttp.save_received_data = false;
            return;
        }

        // Append the new line to the existing data
        if(fhttp.save_received_data &&
           !flipper_http_append_to_file(
               line, strlen(line), !fhttp.just_started_get, fhttp.file_path)) {
            FURI_LOG_E(HTTP_TAG, "Failed to append data to file.");
            fhttp.started_receiving_get = false;
            fhttp.just_started_get = false;
            fhttp.state = IDLE;
            return;
        }

        if(!fhttp.just_started_get) {
            fhttp.just_started_get = true;
        }
        return;
    }

    // Check if we've started receiving data from a POST request
    else if(fhttp.started_receiving_post) {
        // Restart the timeout timer each time new data is received
        furi_timer_restart(fhttp.get_timeout_timer, TIMEOUT_DURATION_TICKS);

        if(strstr(line, "[POST/END]") != NULL) {
            FURI_LOG_I(HTTP_TAG, "POST request completed.");
            // Stop the timer since we've completed the POST request
            furi_timer_stop(fhttp.get_timeout_timer);
            fhttp.started_receiving_post = false;
            fhttp.just_started_post = false;
            fhttp.state = IDLE;
            fhttp.save_bytes = false;
            fhttp.is_bytes_request = false;
            fhttp.save_received_data = false;
            return;
        }

        // Append the new line to the existing data
        if(fhttp.save_received_data &&
           !flipper_http_append_to_file(
               line, strlen(line), !fhttp.just_started_post, fhttp.file_path)) {
            FURI_LOG_E(HTTP_TAG, "Failed to append data to file.");
            fhttp.started_receiving_post = false;
            fhttp.just_started_post = false;
            fhttp.state = IDLE;
            return;
        }

        if(!fhttp.just_started_post) {
            fhttp.just_started_post = true;
        }
        return;
    }

    // Check if we've started receiving data from a PUT request
    else if(fhttp.started_receiving_put) {
        // Restart the timeout timer each time new data is received
        furi_timer_restart(fhttp.get_timeout_timer, TIMEOUT_DURATION_TICKS);

        if(strstr(line, "[PUT/END]") != NULL) {
            FURI_LOG_I(HTTP_TAG, "PUT request completed.");
            // Stop the timer since we've completed the PUT request
            furi_timer_stop(fhttp.get_timeout_timer);
            fhttp.started_receiving_put = false;
            fhttp.just_started_put = false;
            fhttp.state = IDLE;
            fhttp.save_bytes = false;
            fhttp.is_bytes_request = false;
            fhttp.save_received_data = false;
            return;
        }

        // Append the new line to the existing data
        if(fhttp.save_received_data &&
           !flipper_http_append_to_file(
               line, strlen(line), !fhttp.just_started_put, fhttp.file_path)) {
            FURI_LOG_E(HTTP_TAG, "Failed to append data to file.");
            fhttp.started_receiving_put = false;
            fhttp.just_started_put = false;
            fhttp.state = IDLE;
            return;
        }

        if(!fhttp.just_started_put) {
            fhttp.just_started_put = true;
        }
        return;
    }

    // Check if we've started receiving data from a DELETE request
    else if(fhttp.started_receiving_delete) {
        // Restart the timeout timer each time new data is received
        furi_timer_restart(fhttp.get_timeout_timer, TIMEOUT_DURATION_TICKS);

        if(strstr(line, "[DELETE/END]") != NULL) {
            FURI_LOG_I(HTTP_TAG, "DELETE request completed.");
            // Stop the timer since we've completed the DELETE request
            furi_timer_stop(fhttp.get_timeout_timer);
            fhttp.started_receiving_delete = false;
            fhttp.just_started_delete = false;
            fhttp.state = IDLE;
            fhttp.save_bytes = false;
            fhttp.is_bytes_request = false;
            fhttp.save_received_data = false;
            return;
        }

        // Append the new line to the existing data
        if(fhttp.save_received_data &&
           !flipper_http_append_to_file(
               line, strlen(line), !fhttp.just_started_delete, fhttp.file_path)) {
            FURI_LOG_E(HTTP_TAG, "Failed to append data to file.");
            fhttp.started_receiving_delete = false;
            fhttp.just_started_delete = false;
            fhttp.state = IDLE;
            return;
        }

        if(!fhttp.just_started_delete) {
            fhttp.just_started_delete = true;
        }
        return;
    }

    // Handle different types of responses
    if(strstr(line, "[SUCCESS]") != NULL || strstr(line, "[CONNECTED]") != NULL) {
        FURI_LOG_I(HTTP_TAG, "Operation succeeded.");
    } else if(strstr(line, "[INFO]") != NULL) {
        FURI_LOG_I(HTTP_TAG, "Received info: %s", line);

        if(fhttp.state == INACTIVE && strstr(line, "[INFO] Already connected to Wifi.") != NULL) {
            fhttp.state = IDLE;
        }
    } else if(strstr(line, "[GET/SUCCESS]") != NULL) {
        FURI_LOG_I(HTTP_TAG, "GET request succeeded.");
        fhttp.started_receiving_get = true;
        furi_timer_start(fhttp.get_timeout_timer, TIMEOUT_DURATION_TICKS);
        fhttp.state = RECEIVING;
        // for GET request, save data only if it's a bytes request
        fhttp.save_bytes = fhttp.is_bytes_request;
        return;
    } else if(strstr(line, "[POST/SUCCESS]") != NULL) {
        FURI_LOG_I(HTTP_TAG, "POST request succeeded.");
        fhttp.started_receiving_post = true;
        furi_timer_start(fhttp.get_timeout_timer, TIMEOUT_DURATION_TICKS);
        fhttp.state = RECEIVING;
        // for POST request, save data only if it's a bytes request
        fhttp.save_bytes = fhttp.is_bytes_request;
        return;
    } else if(strstr(line, "[PUT/SUCCESS]") != NULL) {
        FURI_LOG_I(HTTP_TAG, "PUT request succeeded.");
        fhttp.started_receiving_put = true;
        furi_timer_start(fhttp.get_timeout_timer, TIMEOUT_DURATION_TICKS);
        fhttp.state = RECEIVING;
        return;
    } else if(strstr(line, "[DELETE/SUCCESS]") != NULL) {
        FURI_LOG_I(HTTP_TAG, "DELETE request succeeded.");
        fhttp.started_receiving_delete = true;
        furi_timer_start(fhttp.get_timeout_timer, TIMEOUT_DURATION_TICKS);
        fhttp.state = RECEIVING;
        return;
    } else if(strstr(line, "[DISCONNECTED]") != NULL) {
        FURI_LOG_I(HTTP_TAG, "WiFi disconnected successfully.");
    } else if(strstr(line, "[ERROR]") != NULL) {
        FURI_LOG_E(HTTP_TAG, "Received error: %s", line);
        fhttp.state = ISSUE;
        return;
    } else if(strstr(line, "[PONG]") != NULL) {
        FURI_LOG_I(HTTP_TAG, "Received PONG response: Wifi Dev Board is still alive.");

        // send command to connect to WiFi
        if(fhttp.state == INACTIVE) {
            fhttp.state = IDLE;
            return;
        }
    }

    if(fhttp.state == INACTIVE && strstr(line, "[PONG]") != NULL) {
        fhttp.state = IDLE;
    } else if(fhttp.state == INACTIVE && strstr(line, "[PONG]") == NULL) {
        fhttp.state = INACTIVE;
    } else {
        fhttp.state = IDLE;
    }
}

// Function to trim leading and trailing spaces and newlines from a constant string
char* trim(const char* str) {
    const char* end;
    char* trimmed_str;
    size_t len;

    // Trim leading space
    while(isspace((unsigned char)*str))
        str++;

    // All spaces?
    if(*str == 0) return strdup(""); // Return an empty string if all spaces

    // Trim trailing space
    end = str + strlen(str) - 1;
    while(end > str && isspace((unsigned char)*end))
        end--;

    // Set length for the trimmed string
    len = end - str + 1;

    // Allocate space for the trimmed string and null terminator
    trimmed_str = (char*)malloc(len + 1);
    if(trimmed_str == NULL) {
        return NULL; // Handle memory allocation failure
    }

    // Copy the trimmed part of the string into trimmed_str
    strncpy(trimmed_str, str, len);
    trimmed_str[len] = '\0'; // Null terminate the string

    return trimmed_str;
}

/**
 * @brief Process requests and parse JSON data asynchronously
 * @param http_request The function to send the request
 * @param parse_json The function to parse the JSON
 * @return true if successful, false otherwise
 */
bool flipper_http_process_response_async(bool (*http_request)(void), bool (*parse_json)(void)) {
    if(http_request()) // start the async request
    {
        furi_timer_start(fhttp.get_timeout_timer, TIMEOUT_DURATION_TICKS);
        fhttp.state = RECEIVING;
    } else {
        FURI_LOG_E(HTTP_TAG, "Failed to send request");
        return false;
    }
    while(fhttp.state == RECEIVING && furi_timer_is_running(fhttp.get_timeout_timer) > 0) {
        // Wait for the request to be received
        furi_delay_ms(100);
    }
    furi_timer_stop(fhttp.get_timeout_timer);
    if(!parse_json()) // parse the JSON before switching to the view (synchonous)
    {
        FURI_LOG_E(HTTP_TAG, "Failed to parse the JSON...");
        return false;
    }
    return true;
}

#endif // FLIPPER_HTTP_H