#include <stdio.h>
#include "config.h"
#include "library.h"
#include "luigi.h"
#include "memory.h"

Library lib;
Player pl;
UIButton* play_button;
UISlider* seek_slider;
UIImageDisplay* cover_image;
UILabel* title_text;
UILabel* album_text;
UILabel* artist_text;

void ui_update_play(void) {
	UI_FREE(play_button->label);
	play_button->label = UIStringCopy(
		pl.play? "Pause": "Play",
		-1
	);
	UIImageDisplaySetContent(
		cover_image,
		pl.cover,
		album_cover_w,
		album_cover_h,
		album_cover_w * 4
	);
	UILabelSetContent(
		title_text,
		pl.song->name,
		-1
	);
	UILabelSetContent(
		album_text,
		pl.song->album,
		-1
	);
	UILabelSetContent(
		artist_text,
		pl.song->artist,
		-1
	);
	UIElementRefresh(cover_image->e.parent);
}

void ui_update_seek(void) {
	float p;
	if (!pl.song) return;
	p = (float)pl.cs / (float)pl.ms;
	seek_slider->position = p;
	UIElementRefresh((UIElement*)seek_slider);
}

int libtab_msg(
	UIElement* el,
	UIMessage msg,
	int di,
	void* dp
) {
	Song* song;
	(void)di;
	(void)dp;
	if (msg == UI_MSG_TABLE_GET_ITEM) {
		UITableGetItem *m = (UITableGetItem*)dp;
		song = &lib.songs[lib.indices[m->index]];
		m->isSelected = 0;
		switch (m->column) {
			case 0:
				return snprintf(
					m->buffer,
					m->bufferBytes,
					"%s",
					song->name
				);
			case 1:
				return snprintf(
					m->buffer,
					m->bufferBytes,
					"%s",
					song->artist
				);
			case 2:
				return snprintf(
					m->buffer,
					m->bufferBytes,
					"%s",
					song->album
				);
			case 3:
				return snprintf(
					m->buffer,
					m->bufferBytes,
					"%s",
					song->path
				);
			default: return 0;
		}
	} else if (msg == UI_MSG_LEFT_UP) {
		int hit = UITableHitTest(
			(UITable*)el,
			el->window->cursorX,
			el->window->cursorY
		);
		song = &lib.songs[lib.indices[hit]];
		play_song(&pl, song);
		ui_update_play();
	}
	return 0;
}

int playpause_msg(
	UIElement* el,
	UIMessage msg,
	int di,
	void* dp
) {
	(void)el;
	(void)di;
	(void)dp;
	if (msg == UI_MSG_CLICKED) {
		if (!pl.song) return 0;
		pl.play = !pl.play;
		ui_update_play();
	}
	return 0;
}

int start_msg(
	UIElement* el,
	UIMessage msg,
	int di,
	void* dp
) {
	(void)el;
	(void)di;
	(void)dp;
	if (msg == UI_MSG_CLICKED) {
		if (!pl.song) return 0;
		play_seek(&pl, 0.0f);
	}
	return 0;
}

int end_msg(
	UIElement* el,
	UIMessage msg,
	int di,
	void* dp
) {
	(void)el;
	(void)di;
	(void)dp;
	if (msg == UI_MSG_CLICKED) {
		if (!pl.song) return 0;
		play_seek(&pl, 1.0f);
	}
	return 0;
}

int seek_msg(
	UIElement* el,
	UIMessage msg,
	int di,
	void* dp
) {
	UISlider* sl;
	(void)el;
	(void)di;
	(void)dp;
	if (msg == UI_MSG_VALUE_CHANGED) {
		sl = (UISlider*)el;
		play_seek(&pl, sl->position);
	} else if (msg == UI_MSG_ANIMATE) {
		ui_update_seek();
	}

	return 0;
}

int prog_main(void* mem) {
	Arena liba;
	UIWindow* wi;
	UISplitPane* split1, * split2, * split3;
	UIPanel* plib, * pctrl, * plist, * pqueue;
	UITable* libtab;
	int r;
	memory_init(mem);
	init_arena(
		&liba,
		galloc(library_memory_size),
		library_memory_size
	);
	build_library(&liba, &lib, library_path);
	init_player(&pl);
	UIInitialise();
	wi = UIWindowCreate(
		0,
		0,
		app_name,
		default_window_w,
		default_window_h
	);
	split1 = UISplitPaneCreate(
		&wi->e,
		0,
		0.3f
	);
	split3 = UISplitPaneCreate(
		&split1->e,
		UI_SPLIT_PANE_VERTICAL,
		0.5f
	);

	split2 = UISplitPaneCreate(
		&split1->e,
		0,
		0.5f
	);
	pctrl  = UIPanelCreate(&split3->e, UI_PANEL_GRAY);
	pctrl->gap = 5;
	pctrl->border = UI_RECT_1(5);
	title_text = UILabelCreate(
		&pctrl->e,
		0,
		"",
		-1
	);
	album_text = UILabelCreate(
		&pctrl->e,
		0,
		"",
		-1
	);
	artist_text = UILabelCreate(
		&pctrl->e,
		0,
		"",
		-1
	);
	cover_image = UIImageDisplayCreate(
		&pctrl->e,
		0,
		(unsigned*)pl.cover,
		album_cover_w,
		album_cover_h,
		album_cover_w
	);
	play_button = UIButtonCreate(
		&pctrl->e,
		0,
		"Play",
		-1
	);
	play_button->e.messageUser = playpause_msg;
	UIButtonCreate(
		&pctrl->e,
		0,
		"Start",
		-1
	)->e.messageUser = start_msg;
	UIButtonCreate(
		&pctrl->e,
		0,
		"End",
		-1
	)->e.messageUser = end_msg;
	seek_slider = UISliderCreate(
		&pctrl->e,
		UI_ELEMENT_H_FILL
	);
	seek_slider->e.messageUser = seek_msg;
	
	pqueue = UIPanelCreate(&split3->e, UI_PANEL_GRAY);
	pqueue->gap = 5;
	pqueue->border = UI_RECT_1(5);
	UILabelCreate(
		&pqueue->e,
		0,
		"Queue",
		5
	);

	plist  = UIPanelCreate(&split2->e, UI_PANEL_GRAY);
	plist->gap = 5;
	plist->border = UI_RECT_1(5);
	UILabelCreate(
		&plist->e,
		0,
		"Playlist",
		8
	);
	plib   = UIPanelCreate(&split2->e, UI_PANEL_GRAY);
	plib->gap = 5;
	plib->border = UI_RECT_1(5);
	UILabelCreate(
		&plib->e,
		0,
		"Library",
		7
	);
	libtab = UITableCreate(
		&plib->e,
		UI_ELEMENT_H_FILL | UI_ELEMENT_V_FILL,
		"Track\tArtist\tAlbum\tFilename"
	);
	libtab->itemCount = lib.cnt;
	libtab->e.messageUser = libtab_msg;
	UITableResizeColumns(libtab);

	r = UIMessageLoop();
	deinit_player(&pl);
	return r;
}