#include "queue.h"


void render_queue(const QueueState *queue_state, const void *app_state, Canvas *const canvas) {
    if (queue_state->current != NULL && queue_state->current->render != NULL)
        ((QueueItem *) queue_state->current)->render(app_state, canvas);
}

bool run_queue(QueueState *queue_state, void *app_state) {
    if (queue_state->current != NULL) {
        queue_state->running = true;
        if ((furi_get_tick() - queue_state->start) >= queue_state->current->duration)
            dequeue(queue_state, app_state);

        return true;
    }
    return false;
}

void dequeue(QueueState *queue_state, void *app_state) {
    ((QueueItem *) queue_state->current)->callback(app_state);
    QueueItem *f = queue_state->current;
    queue_state->current = f->next;
    free(f);
    if (queue_state->current != NULL) {
        if (queue_state->current->start != NULL)
            queue_state->current->start(app_state);
        queue_state->start = furi_get_tick();
    }else{
        queue_state->running = false;
    }
}

void queue_clear(QueueState *queue_state) {
    queue_state->running = false;
    QueueItem *curr = queue_state->current;
    while (curr != NULL) {
        QueueItem *f = curr;
        curr = curr->next;
        free(f);
    }
}

void enqueue(QueueState *queue_state, void *app_state,
             void(*done)(void *state), void(*start)(void *state),
             void (*render)(const void *state, Canvas *const canvas), uint32_t duration) {
    QueueItem *next;
    if (queue_state->current == NULL) {
        queue_state->start = furi_get_tick();
        queue_state->current = malloc(sizeof(QueueItem));
        next = queue_state->current;
        if (next->start != NULL)
            next->start(app_state);

    } else {
        next = queue_state->current;
        while (next->next != NULL) { next = (QueueItem *) (next->next); }
        next->next = malloc(sizeof(QueueItem));
        next = next->next;
    }
    next->callback = done;
    next->render = render;
    next->start = start;
    next->duration = duration;
    next->next = NULL;
}