#include <tt_app.h>
#include <tt_lvgl.h>
#include <tt_lvgl_toolbar.h>
#include <tt_bundle.h>
#include <tactility/device.h>
#include <tactility/drivers/i2s_controller.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_log.h"
#include "esp_http_client.h"
#include "cJSON.h"
#define MINIMP3_IMPLEMENTATION
#define MINIMP3_NO_SIMD
#include "minimp3.h"

#define TAG "DM"
#define PB "http://192.168.68.110:8095"
#define DM_DIR "/sdcard/dm"
#define STATE_PATH "/sdcard/apps/one.tactility.discoverymountain/userdata/state.json"
#define MAX_SEASONS 40
#define MAX_EPS 400
#define MP3_BUF 16384

typedef struct { int num; } SeasonInfo;
typedef struct { char title[128]; char slug[96]; int season; int ep_num; char audio_url[256]; bool seen; } EpInfo;

static struct {
    SeasonInfo seasons[MAX_SEASONS]; int season_cnt;
    EpInfo eps[MAX_EPS]; int ep_cnt;
    int cur_season;
    int cur_ep_idx;
    struct Device* i2s_dev;
    bool is_playing; bool is_paused; bool need_stop;
    TaskHandle_t play_handle;
    int pos_sec; int total_sec;
    int volume;
    lv_obj_t *lbl_title, *lbl_meta, *bar, *lbl_time, *lbl_status, *btn_play;
    lv_obj_t *overlay, *roller;
    char cur_title[128];
} G;

static const char* sd_path(const char* slug){ static char p[256]; snprintf(p,sizeof(p),"%s/%s.mp3",DM_DIR,slug); return p; }
static void ensure_dir(){ mkdir("/sdcard",0777); mkdir("/sdcard/apps",0777); mkdir("/sdcard/apps/one.tactility.discoverymountain",0777); mkdir("/sdcard/apps/one.tactility.discoverymountain/userdata",0777); mkdir(DM_DIR,0777); }
static bool has_slug(const char* slug){ struct stat st; return stat(sd_path(slug),&st)==0; }

static void save_state(){
    cJSON* r=cJSON_CreateObject();
    if(G.ep_cnt>0 && G.cur_ep_idx>=0) cJSON_AddStringToObject(r,"last_slug",G.eps[G.cur_ep_idx].slug);
    cJSON_AddNumberToObject(r,"last_season",G.cur_season);
    cJSON_AddNumberToObject(r,"pos_sec",G.pos_sec);
    char* s=cJSON_PrintUnformatted(r);
    if(s){ FILE* f=fopen(STATE_PATH,"w"); if(f){ fwrite(s,1,strlen(s),f); fclose(f);} free(s);} cJSON_Delete(r);
}
static void load_state(){
    G.cur_season=1; G.cur_ep_idx=-1; G.pos_sec=0;
    FILE* f=fopen(STATE_PATH,"r"); if(!f) return;
    fseek(f,0,SEEK_END); long sz=ftell(f); fseek(f,0,SEEK_SET); if(sz<=0||sz>4096){ fclose(f); return;}
    char* buf=malloc(sz+1); fread(buf,1,sz,f); buf[sz]=0; fclose(f);
    cJSON* r=cJSON_Parse(buf); free(buf); if(!r) return;
    cJSON* ls=cJSON_GetObjectItem(r,"last_slug");
    cJSON* lsn=cJSON_GetObjectItem(r,"last_season");
    cJSON* ps=cJSON_GetObjectItem(r,"pos_sec");
    if(ps&&cJSON_IsNumber(ps)) G.pos_sec=ps->valueint;
    if(lsn&&cJSON_IsNumber(lsn)) G.cur_season=lsn->valueint;
    if(ls&&cJSON_IsString(ls)){
        for(int i=0;i<G.ep_cnt;i++) if(strcmp(G.eps[i].slug,ls->valuestring)==0){ G.cur_ep_idx=i; G.cur_season=G.eps[i].season; break; }
    }
    cJSON_Delete(r);
}

static int cmp_season(const void*a,const void*b){ return ((SeasonInfo*)a)->num - ((SeasonInfo*)b)->num; }
static int cmp_ep(const void*a,const void*b){ EpInfo* ea=(EpInfo*)a; EpInfo* eb=(EpInfo*)b; if(ea->season!=eb->season) return ea->season-eb->season; return ea->ep_num-eb->ep_num; }

static int http_get(const char* url, char** out){
    esp_http_client_config_t cfg={ .url=url, .timeout_ms=8000 };
    esp_http_client_handle_t c=esp_http_client_init(&cfg); if(!c) return -1;
    esp_http_client_set_method(c,HTTP_METHOD_GET);
    if(esp_http_client_perform(c)!=ESP_OK){ esp_http_client_cleanup(c); return -1; }
    if(esp_http_client_get_status_code(c)!=200){ esp_http_client_cleanup(c); return -1; }
    int len=esp_http_client_get_content_length(c); if(len<=0) len=65536;
    char* buf=malloc(len+1); int rlen=esp_http_client_read_response(c,buf,len); buf[rlen]=0;
    esp_http_client_cleanup(c); *out=buf; return rlen;
}

static void fetch_data(){
    char* js=NULL; char url[256];
    snprintf(url,sizeof(url),"%s/api/collections/dm_seasons/records?perPage=100&sort=season_num",PB);
    if(http_get(url,&js)>0){
        cJSON* root=cJSON_Parse(js); free(js); js=NULL;
        if(root){
            cJSON* items=cJSON_GetObjectItem(root,"items");
            if(cJSON_IsArray(items)){
                G.season_cnt=0;
                int n=cJSON_GetArraySize(items);
                for(int i=0;i<n&&G.season_cnt<MAX_SEASONS;i++){
                    cJSON* it=cJSON_GetArrayItem(items,i);
                    cJSON* sn=cJSON_GetObjectItem(it,"season_num");
                    if(sn&&cJSON_IsNumber(sn)){ G.seasons[G.season_cnt].num=sn->valueint; G.season_cnt++; }
                }
                qsort(G.seasons,G.season_cnt,sizeof(SeasonInfo),cmp_season);
            }
            cJSON_Delete(root);
        }
    }
    if(G.season_cnt==0){ for(int i=1;i<=37;i++) G.seasons[i-1].num=i; G.season_cnt=37; }

    snprintf(url,sizeof(url),"%s/api/collections/dm_episodes/records?perPage=400&sort=season_num,episode_num",PB);
    if(http_get(url,&js)>0){
        cJSON* root=cJSON_Parse(js); free(js); js=NULL;
        if(root){
            cJSON* items=cJSON_GetObjectItem(root,"items");
            if(cJSON_IsArray(items)){
                G.ep_cnt=0;
                int n=cJSON_GetArraySize(items);
                for(int i=0;i<n&&G.ep_cnt<MAX_EPS;i++){
                    cJSON* it=cJSON_GetArrayItem(items,i);
                    cJSON* t=cJSON_GetObjectItem(it,"title");
                    cJSON* slug=cJSON_GetObjectItem(it,"slug");
                    cJSON* sn=cJSON_GetObjectItem(it,"season_num");
                    cJSON* en=cJSON_GetObjectItem(it,"episode_num");
                    cJSON* au=cJSON_GetObjectItem(it,"audio_url");
                    if(!sn||!en) continue;
                    EpInfo* e=&G.eps[G.ep_cnt]; memset(e,0,sizeof(*e));
                    if(t&&cJSON_IsString(t)) strncpy(e->title,t->valuestring,sizeof(e->title)-1);
                    if(slug&&cJSON_IsString(slug)) strncpy(e->slug,slug->valuestring,sizeof(e->slug)-1);
                    else if(t) strncpy(e->slug,t->valuestring,sizeof(e->slug)-1);
                    e->season=sn->valueint; e->ep_num=en->valueint;
                    if(au&&cJSON_IsString(au)) strncpy(e->audio_url,au->valuestring,sizeof(e->audio_url)-1);
                    e->seen=has_slug(e->slug);
                    G.ep_cnt++;
                }
                qsort(G.eps,G.ep_cnt,sizeof(EpInfo),cmp_ep);
            }
            cJSON_Delete(root);
        }
    }
    if(G.ep_cnt==0){
        for(int i=0;i<6;i++){ EpInfo* e=&G.eps[i]; snprintf(e->slug,sizeof(e->slug),"S01E%02d",i+1); snprintf(e->title,sizeof(e->title),"Episode %d",i+1); e->season=1; e->ep_num=i+1; }
        G.ep_cnt=6;
    }
    for(int i=0;i<G.ep_cnt;i++) G.eps[i].seen=has_slug(G.eps[i].slug);
}

static void lru_check(){
    typedef struct{ char path[300]; time_t mt; } FE;
    FE files[200];
    int fc=0;
    DIR* d=opendir(DM_DIR);
    if(!d) return;
    struct dirent* de;
    while((de=readdir(d))!=NULL && fc<200){
        if(de->d_name[0]=='.') continue;
        size_t l=strlen(de->d_name);
        if(l<5) continue;
        if(strcmp(de->d_name+l-4,".mp3")!=0) continue;
        char full[300];
        snprintf(full,sizeof(full),"%s/%.200s",DM_DIR,de->d_name);
        struct stat st;
        if(stat(full,&st)!=0) continue;
        if(G.cur_ep_idx>=0){
            const char* curp=sd_path(G.eps[G.cur_ep_idx].slug);
            if(strcmp(full,curp)==0) continue;
        }
        strncpy(files[fc].path,full,sizeof(files[fc].path)-1);
        files[fc].mt=st.st_mtime;
        fc++;
    }
    closedir(d);
    if(fc<12) return;
    for(int i=0;i<fc;i++){
        for(int j=i+1;j<fc;j++){
            if(files[j].mt<files[i].mt){ FE t=files[i]; files[i]=files[j]; files[j]=t; }
        }
    }
    int todel=fc-8;
    for(int i=0;i<todel;i++) unlink(files[i].path);
}

static bool dl_ep(EpInfo* ep){
    if(!ep) return false;
    if(has_slug(ep->slug)) return true;
    ensure_dir(); lru_check();
    if(strlen(ep->audio_url)==0) return false;
    char tmp[300]; snprintf(tmp,sizeof(tmp),"%s.tmp",sd_path(ep->slug));
    FILE* f=fopen(tmp,"wb"); if(!f) return false;
    esp_http_client_config_t cfg={ .url=ep->audio_url, .timeout_ms=30000 };
    esp_http_client_handle_t c=esp_http_client_init(&cfg); if(!c){ fclose(f); return false; }
    if(esp_http_client_perform(c)!=ESP_OK){ esp_http_client_cleanup(c); fclose(f); unlink(tmp); return false; }
    if(esp_http_client_get_status_code(c)!=200){ esp_http_client_cleanup(c); fclose(f); unlink(tmp); return false; }
    char buf[2048]; int total=0;
    while(1){
        int r=esp_http_client_read(c,buf,sizeof(buf));
        if(r<=0) break;
        fwrite(buf,1,r,f);
        total+=r;
        if(G.lbl_status){ char m[32]; snprintf(m,sizeof(m),"DL %dKB",total/1024); lv_label_set_text(G.lbl_status,m);}
    }
    esp_http_client_cleanup(c); fclose(f);
    if(total<1024){ unlink(tmp); return false; }
    rename(tmp,sd_path(ep->slug));
    ep->seen=true;
    return true;
}

static void stop_play(){
    if(G.play_handle){ G.need_stop=true; vTaskDelay(pdMS_TO_TICKS(100)); if(G.play_handle){ vTaskDelete(G.play_handle); G.play_handle=NULL; } }
    if(G.i2s_dev){ device_lock(G.i2s_dev); i2s_controller_reset(G.i2s_dev); device_unlock(G.i2s_dev); G.i2s_dev=NULL; }
    G.is_playing=false; G.is_paused=false;
}

static void play_task(void* arg){
    (void)arg;
    int idx=G.cur_ep_idx;
    if(idx<0||idx>=G.ep_cnt){ G.play_handle=NULL; vTaskDelete(NULL); return; }
    EpInfo* ep=&G.eps[idx];
    FILE* file=fopen(sd_path(ep->slug),"rb");
    if(!file){ G.is_playing=false; G.play_handle=NULL; vTaskDelete(NULL); return; }
    fseek(file,0,SEEK_END); long fsize=ftell(file); fseek(file,0,SEEK_SET);
    G.i2s_dev=device_find_by_name("i2s0");
    if(!G.i2s_dev){ fclose(file); G.is_playing=false; G.play_handle=NULL; vTaskDelete(NULL); return; }
    if(fsize>0) G.total_sec=(int)(fsize/16000);

    mp3dec_t dec; mp3dec_init(&dec);
    uint8_t* inbuf=malloc(MP3_BUF);
    int16_t* pcm=malloc(1152*2*2);
    size_t buffered=0;
    mp3dec_frame_info_t info; memset(&info,0,sizeof(info));
    bool configured=false;
    size_t r=fread(inbuf,1,MP3_BUF,file); buffered=r;

    while(!G.need_stop){
        if(G.is_paused){ vTaskDelay(pdMS_TO_TICKS(100)); continue; }
        int samples=mp3dec_decode_frame(&dec,inbuf,(int)buffered,pcm,&info);
        if(samples>0){
            if(!configured){
                struct I2sConfig cfg={ .communication_format=I2S_FORMAT_STAND_I2S, .sample_rate=(uint32_t)info.hz, .bits_per_sample=16, .channel_left=0, .channel_right=(info.channels==2)?1:I2S_CHANNEL_NONE };
                device_lock(G.i2s_dev); i2s_controller_set_config(G.i2s_dev,&cfg); device_unlock(G.i2s_dev);
                if(G.pos_sec>5){ long seek=(long)G.pos_sec*16000; if(seek<fsize){ fseek(file,seek,SEEK_SET); buffered=0; } }
                configured=true;
            }
            float vol=G.volume/100.0f; if(vol<0) vol=0; if(vol>1) vol=1;
            for(int i=0;i<samples*2;i++){ int32_t s=pcm[i]; s=(int32_t)(s*vol); if(s>32767) s=32767; if(s<-32768) s=-32768; pcm[i]=(int16_t)s; }
            size_t to_write=samples*2*2; size_t off=0;
            while(off<to_write && !G.need_stop){
                if(G.is_paused){ vTaskDelay(pdMS_TO_TICKS(100)); continue; }
                size_t w=0;
                device_lock(G.i2s_dev);
                esp_err_t e=i2s_controller_write(G.i2s_dev,(uint8_t*)pcm+off,to_write-off,&w,pdMS_TO_TICKS(500));
                device_unlock(G.i2s_dev);
                if(e==ESP_OK) off+=w; else vTaskDelay(pdMS_TO_TICKS(10));
            }
            if(info.hz>0) G.pos_sec += samples / info.hz;
        }
        if(info.frame_bytes>0 && info.frame_bytes <= (int)buffered){
            memmove(inbuf,inbuf+info.frame_bytes,buffered-info.frame_bytes);
            buffered-=info.frame_bytes;
        } else buffered=0;
        if(buffered < MP3_BUF/2){
            size_t nr=fread(inbuf+buffered,1,MP3_BUF-buffered,file);
            if(nr>0) buffered+=nr; else { if(samples==0) break; }
        }
        if(buffered==0) break;
    }
    fclose(file); free(inbuf); free(pcm);
    if(G.i2s_dev){ device_lock(G.i2s_dev); i2s_controller_reset(G.i2s_dev); device_unlock(G.i2s_dev); G.i2s_dev=NULL; }
    G.is_playing=false; G.play_handle=NULL; vTaskDelete(NULL);
}

static void start_idx(int idx){
    if(idx<0||idx>=G.ep_cnt) return;
    if(G.cur_ep_idx!=idx) G.pos_sec=0;
    EpInfo* ep=&G.eps[idx];
    if(!has_slug(ep->slug)){
        if(G.lbl_status) lv_label_set_text(G.lbl_status,"Downloading...");
        if(!dl_ep(ep)){ if(G.lbl_status) lv_label_set_text(G.lbl_status,"DL failed"); return; }
    }
    stop_play();
    G.cur_ep_idx=idx; G.cur_season=ep->season; strncpy(G.cur_title,ep->title,sizeof(G.cur_title)-1);
    G.need_stop=false; G.is_paused=false; G.is_playing=true;
    save_state();
    xTaskCreate(play_task,"dm_play",6144,NULL,5,&G.play_handle);
}

static void select_ep(int idx){
    if(idx<0||idx>=G.ep_cnt) return;
    G.cur_ep_idx=idx; EpInfo* ep=&G.eps[idx]; G.cur_season=ep->season;
    if(G.lbl_title) lv_label_set_text(G.lbl_title,ep->title);
    if(G.lbl_meta){ char b[48]; snprintf(b,sizeof(b),"S%02d E%02d %s",ep->season,ep->ep_num,ep->seen?"*":""); lv_label_set_text(G.lbl_meta,b); }
    if(G.lbl_status) lv_label_set_text(G.lbl_status,ep->seen?"On SD":"Tap Play to DL");
    if(G.bar) lv_bar_set_value(G.bar,0,LV_ANIM_OFF);
    if(G.lbl_time) lv_label_set_text(G.lbl_time,"0:00 / --:--");
    G.pos_sec=0; save_state();
}

static void go_next(){ if(G.ep_cnt==0) return; int n=G.cur_ep_idx+1; if(n>=G.ep_cnt) n=0; select_ep(n); start_idx(n); }
static void go_prev(){ if(G.ep_cnt==0) return; if(G.pos_sec>5){ G.pos_sec=0; return; } int p=G.cur_ep_idx-1; if(p<0) p=G.ep_cnt-1; select_ep(p); start_idx(p); }
static void fmt_time(char* o,int s){ snprintf(o,16,"%d:%02d",s/60,s%60); }

static void ui_timer(lv_timer_t* t){
    (void)t;
    if(G.bar){
        if(G.total_sec>0){ int pct=G.pos_sec*100/G.total_sec; if(pct>100) pct=100; lv_bar_set_value(G.bar,pct,LV_ANIM_OFF); }
        else if(G.is_playing){ lv_bar_set_value(G.bar,(G.pos_sec%10)*10,LV_ANIM_OFF); }
    }
    if(G.lbl_time){
        char a[16],b[16]; fmt_time(a,G.pos_sec); if(G.total_sec>0) fmt_time(b,G.total_sec); else snprintf(b,sizeof(b),"--:--");
        char buf[40]; snprintf(buf,sizeof(buf),"%s / %s",a,b); lv_label_set_text(G.lbl_time,buf);
    }
    if(G.is_playing && G.lbl_status) lv_label_set_text(G.lbl_status,"Playing");
}

static void btn_play_cb(lv_event_t* e){
    (void)e;
    if(G.is_playing && !G.is_paused){
        G.is_paused=true;
        if(G.lbl_status) lv_label_set_text(G.lbl_status,"Paused");
        if(G.btn_play){ lv_obj_t* ch=lv_obj_get_child(G.btn_play,0); if(ch) lv_label_set_text(ch,LV_SYMBOL_PLAY);}
    } else if(G.is_paused){
        G.is_paused=false;
        if(G.btn_play){ lv_obj_t* ch=lv_obj_get_child(G.btn_play,0); if(ch) lv_label_set_text(ch,LV_SYMBOL_PAUSE);}
    } else {
        start_idx(G.cur_ep_idx);
        if(G.btn_play){ lv_obj_t* ch=lv_obj_get_child(G.btn_play,0); if(ch) lv_label_set_text(ch,LV_SYMBOL_PAUSE);}
    }
}
static void btn_prev_cb(lv_event_t* e){ (void)e; go_prev(); }
static void btn_next_cb(lv_event_t* e){ (void)e; go_next(); }
static void close_overlay(){ if(G.overlay){ lv_obj_del(G.overlay); G.overlay=NULL; G.roller=NULL; } }
static void roller_cb(lv_event_t* e){
    if(lv_event_get_code(e)!=LV_EVENT_VALUE_CHANGED) return;
    int sel=lv_roller_get_selected(G.roller); if(sel<0||sel>=G.season_cnt) return;
    int sn=G.seasons[sel].num; close_overlay();
    int first=-1, first_unseen=-1;
    for(int i=0;i<G.ep_cnt;i++) if(G.eps[i].season==sn){ if(first==-1) first=i; if(!G.eps[i].seen && first_unseen==-1) first_unseen=i; }
    int tgt=first_unseen!=-1?first_unseen:first;
    if(tgt!=-1){ G.cur_season=sn; select_ep(tgt); }
}
static void btn_seasons_cb(lv_event_t* e){
    (void)e; if(G.overlay){ close_overlay(); return; }
    G.overlay=lv_obj_create(lv_scr_act()); lv_obj_set_size(G.overlay,240,280); lv_obj_center(G.overlay);
    lv_obj_set_style_bg_color(G.overlay,lv_color_hex(0x222222),0); lv_obj_set_style_radius(G.overlay,12,0);
    lv_obj_t* title=lv_label_create(G.overlay); lv_label_set_text(title,"Select Season"); lv_obj_align(title,LV_ALIGN_TOP_MID,0,8);
    static char opts[1024]; opts[0]=0;
    for(int i=0;i<G.season_cnt;i++){ if(i==0) snprintf(opts,sizeof(opts),"S%d",G.seasons[i].num); else { char c[16]; snprintf(c,sizeof(c),"\nS%d",G.seasons[i].num); strncat(opts,c,sizeof(opts)-strlen(opts)-1);} }
    G.roller=lv_roller_create(G.overlay); lv_roller_set_options(G.roller,opts,LV_ROLLER_MODE_NORMAL);
    lv_obj_set_size(G.roller,120,180); lv_obj_align(G.roller,LV_ALIGN_CENTER,0,10);
    int sel=0; for(int i=0;i<G.season_cnt;i++) if(G.seasons[i].num==G.cur_season) sel=i;
    lv_roller_set_selected(G.roller,sel,LV_ANIM_OFF); lv_obj_add_event_cb(G.roller,roller_cb,LV_EVENT_VALUE_CHANGED,NULL);
    lv_obj_t* bc=lv_btn_create(G.overlay); lv_obj_set_size(bc,80,32); lv_obj_align(bc,LV_ALIGN_BOTTOM_MID,0,-8);
    lv_obj_t* lc=lv_label_create(bc); lv_label_set_text(lc,"Close"); lv_obj_center(lc);
    lv_obj_add_event_cb(bc,(lv_event_cb_t)close_overlay,LV_EVENT_CLICKED,NULL);
}

static void build_ui(){
    lv_obj_t* root=lv_obj_create(lv_scr_act()); lv_obj_set_size(root,LV_PCT(100),LV_PCT(100));
    lv_obj_set_style_bg_color(root,lv_color_hex(0x111111),0); lv_obj_set_style_pad_all(root,8,0); lv_obj_set_style_border_width(root,0,0);
    G.lbl_title=lv_label_create(root); lv_label_set_text(G.lbl_title,"Discovery Mountain"); lv_obj_set_style_text_font(G.lbl_title,&lv_font_montserrat_14,0); lv_obj_set_width(G.lbl_title,LV_PCT(100)); lv_label_set_long_mode(G.lbl_title,LV_LABEL_LONG_WRAP); lv_obj_align(G.lbl_title,LV_ALIGN_TOP_LEFT,0,0);
    G.lbl_meta=lv_label_create(root); lv_label_set_text(G.lbl_meta,"S01 E01"); lv_obj_set_style_text_color(G.lbl_meta,lv_color_hex(0xAAAAAA),0); lv_obj_align(G.lbl_meta,LV_ALIGN_TOP_LEFT,0,22);
    G.bar=lv_bar_create(root); lv_obj_set_size(G.bar,LV_PCT(100),12); lv_obj_align(G.bar,LV_ALIGN_TOP_LEFT,0,44); lv_bar_set_value(G.bar,0,LV_ANIM_OFF);
    G.lbl_time=lv_label_create(root); lv_label_set_text(G.lbl_time,"0:00 / --:--"); lv_obj_align(G.lbl_time,LV_ALIGN_TOP_LEFT,0,60);
    G.lbl_status=lv_label_create(root); lv_label_set_text(G.lbl_status,"Ready"); lv_obj_set_style_text_color(G.lbl_status,lv_color_hex(0x888888),0); lv_obj_align(G.lbl_status,LV_ALIGN_TOP_LEFT,0,76);
    lv_obj_t* row=lv_obj_create(root); lv_obj_set_size(row,LV_PCT(100),56); lv_obj_align(row,LV_ALIGN_TOP_LEFT,0,98); lv_obj_set_flex_flow(row,LV_FLEX_FLOW_ROW); lv_obj_set_flex_align(row,LV_FLEX_ALIGN_SPACE_EVENLY,LV_FLEX_ALIGN_CENTER,LV_FLEX_ALIGN_CENTER); lv_obj_set_style_bg_opa(row,LV_OPA_TRANSP,0); lv_obj_set_style_border_width(row,0,0);
    lv_obj_t* b1=lv_btn_create(row); lv_obj_set_size(b1,56,48); lv_obj_t* l1=lv_label_create(b1); lv_label_set_text(l1,LV_SYMBOL_PREV); lv_obj_center(l1); lv_obj_add_event_cb(b1,btn_prev_cb,LV_EVENT_CLICKED,NULL);
    G.btn_play=lv_btn_create(row); lv_obj_set_size(G.btn_play,72,48); lv_obj_set_style_bg_color(G.btn_play,lv_color_hex(0x2E7D32),0); lv_obj_t* l2=lv_label_create(G.btn_play); lv_label_set_text(l2,LV_SYMBOL_PLAY); lv_obj_center(l2); lv_obj_add_event_cb(G.btn_play,btn_play_cb,LV_EVENT_CLICKED,NULL);
    lv_obj_t* b3=lv_btn_create(row); lv_obj_set_size(b3,56,48); lv_obj_t* l3=lv_label_create(b3); lv_label_set_text(l3,LV_SYMBOL_NEXT); lv_obj_center(l3); lv_obj_add_event_cb(b3,btn_next_cb,LV_EVENT_CLICKED,NULL);
    lv_obj_t* row2=lv_obj_create(root); lv_obj_set_size(row2,LV_PCT(100),44); lv_obj_align(row2,LV_ALIGN_BOTTOM_LEFT,0,0); lv_obj_set_flex_flow(row2,LV_FLEX_FLOW_ROW); lv_obj_set_flex_align(row2,LV_FLEX_ALIGN_SPACE_EVENLY,LV_FLEX_ALIGN_CENTER,LV_FLEX_ALIGN_CENTER); lv_obj_set_style_bg_opa(row2,LV_OPA_TRANSP,0); lv_obj_set_style_border_width(row2,0,0);
    lv_obj_t* bs=lv_btn_create(row2); lv_obj_set_size(bs,LV_PCT(100),36); lv_obj_t* ls=lv_label_create(bs); lv_label_set_text(ls,"Seasons"); lv_obj_center(ls); lv_obj_add_event_cb(bs,btn_seasons_cb,LV_EVENT_CLICKED,NULL);
    lv_timer_create(ui_timer,500,NULL);
}

static void onShow(AppHandle app, void* data, lv_obj_t* parent){
    (void)app; (void)data; (void)parent;
    memset(&G,0,0); G.pos_sec=0; G.total_sec=0; G.cur_season=1; G.cur_ep_idx=-1; G.volume=80; ensure_dir();
    load_state(); fetch_data(); build_ui();
    if(G.cur_ep_idx<0){ int s1=-1; for(int i=0;i<G.ep_cnt;i++) if(G.eps[i].season==G.cur_season){ s1=i; break; } if(s1==-1) s1=0; G.cur_ep_idx=s1; }
    if(G.ep_cnt>0 && G.cur_ep_idx>=0) select_ep(G.cur_ep_idx);
}
static void onHide(AppHandle app, void* data){ (void)app; (void)data; stop_play(); save_state(); }

int main(int argc, char* argv[]){
    (void)argc; (void)argv;
    tt_app_register((AppRegistration){ .onShow=onShow, .onHide=onHide });
    return 0;
}