# video_views.py
import os
import streamlit as st
import db
from models import Video
from controllers.label_controller import label_widget


def show_video_row(
    video: Video,
    preselected_labels,
    editable_labels=True,
    editable_difficulty=True,
    playlist=None,
    playlist_video_ids=None,
    video_playlists=None,
):
    """
    Affiche une ligne Streamlit pour une vidéo :
    - miniature + lecture conditionnelle
    - métadonnées et labels
    - édition des labels et difficulté
    - (optionnel) ajout/retrait d'une playlist
    """

    # --- Vérifie si la vidéo est dans la playlist ---
    in_playlist = False
    if playlist and playlist_video_ids is not None:
        in_playlist = video.file_name in playlist_video_ids
    elif playlist:
        playlist_video_ids = db.get_video_file_names_in_playlist(playlist.id)
        in_playlist = video.file_name in playlist_video_ids

    # --- Layout : miniature / infos / édition / action ---
    if playlist:
        col1, col2, col3, col4 = st.columns([1, 3, 2, 0.8])
    else:
        col1, col2, col3 = st.columns([1, 3, 2])
        col4 = None

    # --- Colonne 1 : miniature + boutons Play/Stop ---
    play_key = f"playing_{video.file_name}"
    st.session_state.setdefault(play_key, False)

    with col1:
        if getattr(video, "thumbnail_file", None) and os.path.exists(video.thumbnail_file):
            st.image(video.thumbnail_file)
        else:
            st.caption("Pas de miniature")

        st.caption(video.file_name or video.mp4_file_name)

        c1, c2 = st.columns(2)
        with c1:
            if st.button("▶️ Lire", key=f"play_{video.file_name}"):
                st.session_state[play_key] = True
                (st.rerun if hasattr(st, "rerun") else st.experimental_rerun)()
        with c2:
            if st.button("⏸️ Stop", key=f"stop_{video.file_name}"):
                st.session_state[play_key] = False
                (st.rerun if hasattr(st, "rerun") else st.experimental_rerun)()

        if st.session_state[play_key]:
            mp4_path = getattr(video, "mp4_file", None)
            if mp4_path and os.path.exists(mp4_path):
                st.video(mp4_path)
            else:
                st.warning("Fichier vidéo introuvable.")

    # --- Colonne 2 : métadonnées ---
    with col2:
        st.markdown(f"**📅 {video.record_datetime or ''}** — {video.day_of_week or ''}")
        st.write(f"📍 {video.address or 'Inconnue'}")
        st.write(f"💪 Difficulté : {video.difficulty_display}")
        st.text(f"🏷️ Labels: {', '.join(preselected_labels) or 'Aucun'}")

        if video_playlists:
            st.text(f"🎵 Playlists: {', '.join(video_playlists)}")
        else:
            playlists = db.get_video_playlists(video.file_name)
            if playlists:
                st.text(f"🎵 Playlists: {', '.join(playlists)}")

    # --- Colonne 3 : édition ---
    with col3:
        if editable_labels:
            label_widget(video, preselected=preselected_labels)
        if editable_difficulty:
            levels = ["Tout niveau", "Débutant", "Intermédiaire", "Avancé", "Star"]
            try:
                idx = levels.index(video.difficulty_display)
            except ValueError:
                idx = 0
            new_level = st.selectbox(
                "🎚 Niveau",
                levels,
                index=idx,
                key=f"diff_{video.file_name}"
            )
            if new_level != video.difficulty_display:
                db.update_video_difficulty(video.file_name, new_level)
                st.success(f"Niveau mis à jour pour {video.file_name}")

    # --- Colonne 4 : action playlist ---
    if col4 and playlist:
        with col4:
            key_toggle = f"toggle_{playlist.id}_{video.file_name}"
            prev_state_key = f"{key_toggle}_prev"
            prev_state = st.session_state.get(prev_state_key, in_playlist)

            toggled = st.toggle(
                "🎵",
                value=in_playlist,
                key=key_toggle,
                help="Inclure dans la playlist"
            )

            if toggled != prev_state:
                if toggled:
                    db.add_video_to_playlist(file_name=video.file_name, playlist_id=playlist.id)
                    st.toast(f"✅ {video.file_name} ajouté à {playlist.name}")
                else:
                    db.remove_video_from_playlist(file_name=video.file_name, playlist_id=playlist.id)
                    st.toast(f"🗑️ {video.file_name} retiré de {playlist.name}")

                st.session_state[prev_state_key] = toggled
                (st.rerun if hasattr(st, "rerun") else st.experimental_rerun)()
            else:
                st.session_state[prev_state_key] = toggled