Momentum-Apps/scences/emulation.c

#include "nfc_playlist.h"
#include "scences/emulation.h"

NfcPlaylistEmulationState EmulationState = NfcPlaylistEmulationState_Stopped;

void nfc_playlist_emulation_scene_on_enter(void* context) {
    NfcPlaylist* nfc_playlist = context;
    nfc_playlist_emulation_setup(nfc_playlist);
    nfc_playlist_emulation_start(nfc_playlist);
}

bool nfc_playlist_emulation_scene_on_event(void* context, SceneManagerEvent event) {
    UNUSED(context);
    if (event.event == 0 && EmulationState == NfcPlaylistEmulationState_Emulating) {
        EmulationState = NfcPlaylistEmulationState_Canceled;
        return true;
    }
    return false;
}

void nfc_playlist_emulation_scene_on_exit(void* context) {
    NfcPlaylist* nfc_playlist = context;
    EmulationState = NfcPlaylistEmulationState_Stopped;
    nfc_playlist_emulation_stop(nfc_playlist);
    nfc_playlist_emulation_free(nfc_playlist);
    popup_reset(nfc_playlist->popup);
}

void nfc_playlist_emulation_setup(void* context) {
    NfcPlaylist* nfc_playlist = context;

    nfc_playlist->thread = furi_thread_alloc_ex("NfcPlaylistEmulationWorker", 8192, nfc_playlist_emulation_task, nfc_playlist);
    nfc_playlist->nfc_playlist_worker = nfc_playlist_worker_alloc();
}

void nfc_playlist_emulation_free(NfcPlaylist* nfc_playlist) {
    furi_assert(nfc_playlist);
    furi_thread_free(nfc_playlist->thread);
    nfc_playlist_worker_free(nfc_playlist->nfc_playlist_worker);
    nfc_playlist->thread = NULL;
    nfc_playlist->nfc_playlist_worker = NULL;
}

void nfc_playlist_emulation_start(NfcPlaylist* nfc_playlist) {
    furi_assert(nfc_playlist);
    furi_thread_start(nfc_playlist->thread);
}

void nfc_playlist_emulation_stop(NfcPlaylist* nfc_playlist) {
    furi_assert(nfc_playlist);
    furi_thread_join(nfc_playlist->thread);
}

int32_t nfc_playlist_emulation_task(void* context) {
    NfcPlaylist* nfc_playlist = context;

    Storage* storage = furi_record_open(RECORD_STORAGE);
    Stream* stream = file_stream_alloc(storage);
    FuriString* line = furi_string_alloc();

    popup_reset(nfc_playlist->popup);
    popup_set_context(nfc_playlist->popup, nfc_playlist);
    view_dispatcher_switch_to_view(nfc_playlist->view_dispatcher, NfcPlaylistView_Popup);

    if(file_stream_open(stream, furi_string_get_cstr(nfc_playlist->file_path), FSAM_READ, FSOM_OPEN_EXISTING) && nfc_playlist->file_selected_check) {
        EmulationState = NfcPlaylistEmulationState_Emulating;
        int file_position = 0;
        while(stream_read_line(stream, line) && EmulationState == NfcPlaylistEmulationState_Emulating) {

            char* file_path = (char*)furi_string_get_cstr(line);

            if (strlen(file_path) <= 1) {continue;}

            if (nfc_playlist->emulate_delay > 0) {
                if (file_position > 0) {
                    popup_set_header(nfc_playlist->popup, "Delaying", 64, 10, AlignCenter, AlignTop);
                    start_blink(nfc_playlist, NfcPlaylistLedState_Error);
                    int time_counter_delay_ms = (options_emulate_delay[nfc_playlist->emulate_delay]*1000);
                    do {
                        char display_text[10];
                        snprintf(display_text, 10, "%ds", (time_counter_delay_ms/1000));
                        popup_set_text(nfc_playlist->popup, display_text, 64, 50, AlignCenter, AlignTop);
                        furi_delay_ms(50);
                        time_counter_delay_ms -= 50;
                    } while(time_counter_delay_ms > 0 && EmulationState == NfcPlaylistEmulationState_Emulating);
                } else {
                    file_position++;
                }
            }

            if (EmulationState != NfcPlaylistEmulationState_Emulating) {break;}

            char* file_name = strchr(file_path, '/') != NULL ? &strrchr(file_path, '/')[1] : file_path;
            char const* file_ext = &strrchr(file_path, '.')[1];
            int time_counter_ms = (options_emulate_timeout[nfc_playlist->emulate_timeout]*1000);

            if (storage_file_exists(storage, file_path) == false) {
                int popup_header_text_size = strlen(file_name) + 18;
                char popup_header_text[popup_header_text_size];
                snprintf(popup_header_text, popup_header_text_size, "%s\n%s", "ERROR not found:", file_name);
                popup_set_header(nfc_playlist->popup, popup_header_text, 64, 10, AlignCenter, AlignTop);
                start_blink(nfc_playlist, NfcPlaylistLedState_Error);
                while(time_counter_ms > 0 && EmulationState == NfcPlaylistEmulationState_Emulating) {
                    char popup_text[9];
                    snprintf(popup_text, 9, "%ds", (time_counter_ms/1000));
                    popup_set_text(nfc_playlist->popup, popup_text, 64, 50, AlignCenter, AlignTop);
                    furi_delay_ms(50);
                    time_counter_ms -= 50;
                }
            }

            else if (strcasestr(file_ext, "nfc") == NULL) {
                int popup_header_text_size = strlen(file_name) + 21;
                char popup_header_text[popup_header_text_size];
                snprintf(popup_header_text, popup_header_text_size, "%s\n%s", "ERROR invalid file:", file_name);
                popup_set_header(nfc_playlist->popup, popup_header_text, 64, 10, AlignCenter, AlignTop);
                start_blink(nfc_playlist, NfcPlaylistLedState_Error);
                while(time_counter_ms > 0 && EmulationState == NfcPlaylistEmulationState_Emulating) {
                    char popup_text[9];
                    snprintf(popup_text, 9, "%ds", (time_counter_ms/1000));
                    popup_set_text(nfc_playlist->popup, popup_text, 64, 50, AlignCenter, AlignTop);
                    furi_delay_ms(50);
                    time_counter_ms -= 50;
                }
            }

            else {
                int popup_header_text_size = strlen(file_name) + 12;
                char popup_header_text[popup_header_text_size];
                snprintf(popup_header_text, popup_header_text_size, "%s\n%s", "Emulating:", file_name);
                popup_set_header(nfc_playlist->popup, popup_header_text, 64, 10, AlignCenter, AlignTop);
                nfc_playlist_worker_set_nfc_data(nfc_playlist->nfc_playlist_worker, file_path);
                nfc_playlist_worker_start(nfc_playlist->nfc_playlist_worker);
                start_blink(nfc_playlist, NfcPlaylistLedState_Normal);
                while(nfc_playlist_worker_is_emulating(nfc_playlist->nfc_playlist_worker) && time_counter_ms > 0 && EmulationState == NfcPlaylistEmulationState_Emulating) {
                    char popup_text[9];
                    snprintf(popup_text, 9, "%ds", (time_counter_ms/1000));
                    popup_set_text(nfc_playlist->popup, popup_text, 64, 50, AlignCenter, AlignTop);
                    furi_delay_ms(50);
                    time_counter_ms -= 50;
                }
                nfc_playlist_worker_stop(nfc_playlist->nfc_playlist_worker);
            }
        }
        popup_reset(nfc_playlist->popup);
        popup_set_header(nfc_playlist->popup, EmulationState == NfcPlaylistEmulationState_Canceled ? "Emulation stopped" : "Emulation finished", 64, 10, AlignCenter, AlignTop);
        popup_set_text(nfc_playlist->popup, "Press back", 64, 50, AlignCenter, AlignTop);
        stop_blink(nfc_playlist);
        EmulationState = NfcPlaylistEmulationState_Stopped;
    } 
    
    else if (!nfc_playlist->file_selected_check) {
        popup_set_header(nfc_playlist->popup, "No playlist selected", 64, 10, AlignCenter, AlignTop);
        popup_set_text(nfc_playlist->popup, "Press back", 64, 50, AlignCenter, AlignTop);
    } 
    
    else {
        popup_set_header(nfc_playlist->popup, "Failed to open playlist", 64, 10, AlignCenter, AlignTop);
        popup_set_text(nfc_playlist->popup, "Press back", 64, 50, AlignCenter, AlignTop);
    }

    furi_string_free(line);
    file_stream_close(stream);
    furi_record_close(RECORD_STORAGE);
    stream_free(stream);

    return 0;
}