/*
 * Copyright 2022 Olaf Wintermann
 *
 * Permission is hereby granted, free of charge, to any person obtaining a 
 * copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the 
 * Software is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in 
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 */

#include "playlist.h"

#include <stdlib.h>

#include "player.h"
#include "utils.h"

#include <cx/array_list.h>
#include <cx/linked_list.h>

void PlayListInit(MainWindow *win) {
    win->playlist.tracks = cxArrayListCreate(cxDefaultAllocator, NULL, CX_STORE_POINTERS, 64);
    win->playlist.tracks->simple_destructor = free;
    win->playlist.current_track = -1;
}

void PlayListAddFile(MainWindow *win, const char *file) {
    char *f = strdup(file);
    cxListAdd(win->playlist.tracks, f);
}

void PlayListPlayNext(MainWindow *win, bool force) {
    CxList *tracks = win->playlist.tracks;
    if(!tracks) return;
    size_t len = tracks->size;
    
    int current = win->playlist.current_track;
    if(win->playlist.repeatTrack) {
        if(force) {
            current++;
        }
    } else if(win->playlist.random) {
        current = random() % len;
    } else if(current < len) {
        current++;
    } else if(win->playlist.autoplayFolder) {
        char *next_file = util_find_next_file(win->file);
        cxListAdd(win->playlist.tracks, next_file);
        current = len;
    } else {
        current = 0;
    }
    
    PlayListPlayTrack(win, current);
}

void PlayListPlayTrack(MainWindow *win, int i) {
    CxList *tracks = win->playlist.tracks;
    if(i < tracks->size) {
        char *file = cxListAt(tracks, i);
        if(file) {
            win->playlist.current_track = i;
            win->file = file;
            PlayerOpenFile(win);
            win->playlist.current_track = i;
        }
    }
}

void PlayListClear(MainWindow *win) {
    cxListClear(win->playlist.tracks);
}