"""Video-side download SETTINGS (isolated).

Persists the video download configuration in video.db's ``video_settings`` KV
table — fully separate from the music ``soulseek.*`` paths so the two libraries
never share a folder or collide. The actual download fulfillment engine (wishlist
→ search → grab) is a later roadmap phase; these endpoints just store/serve the
config the Settings → Downloads tab edits.

Keys persisted here (all under video.db):
  - ``download_path``  : input folder a video download lands in
  - ``transfer_path``  : output folder finished video files move to (video library)

Connection settings that are genuinely SHARED with music (the slskd instance, the
torrent/usenet clients, Prowlarr indexers) are NOT stored here — those live in the
music config_manager and are surfaced on the shared Indexers tab + shared slskd
block (a deliberate shared boundary, since they're one physical resource).
"""

from __future__ import annotations

from flask import jsonify, request

from utils.logging_config import get_logger

logger = get_logger("video_api.downloads")

# Video-specific path keys (vs. the shared connection settings).
_PATH_KEYS = ("download_path", "transfer_path")

# slskd CONNECTION settings genuinely SHARED with music — one slskd instance serves
# both sides, so these live in the app-wide config_manager (soulseek.*), NOT video.db.
# Deliberately excludes the music download/transfer PATHS and source mode/quality —
# those are video-specific (stored in video.db). Maps the video field name -> the
# shared config key + default. (config_manager is shared app config, not music code.)
_SLSKD_KEYS = {
    "slskd_url": ("soulseek.slskd_url", "http://localhost:5030"),
    "api_key": ("soulseek.api_key", ""),
    "search_timeout": ("soulseek.search_timeout", 60),
    "search_timeout_buffer": ("soulseek.search_timeout_buffer", 15),
    "search_min_delay_seconds": ("soulseek.search_min_delay_seconds", 0),
    "min_peer_upload_speed": ("soulseek.min_peer_upload_speed", 0),
    "max_peer_queue": ("soulseek.max_peer_queue", 0),
    "download_timeout": ("soulseek.download_timeout", 600),   # seconds (UI shows minutes)
    "auto_clear_searches": ("soulseek.auto_clear_searches", True),
}


def register_routes(bp):
    @bp.route("/downloads/config", methods=["GET"])
    def video_downloads_config():
        from . import get_video_db
        from core.video.download_config import load as load_source
        db = get_video_db()
        out = {k: db.get_setting(k) or "" for k in _PATH_KEYS}
        out.update(load_source(db))   # download_mode + hybrid_order
        return jsonify(out)

    @bp.route("/downloads/config", methods=["POST"])
    def video_downloads_config_save():
        from . import get_video_db
        from core.video.download_config import save as save_source
        db = get_video_db()
        body = request.get_json(silent=True) or {}
        for key in _PATH_KEYS:
            if key in body:
                db.set_setting(key, (str(body.get(key) or "")).strip())
        save_source(db, body)         # download_mode + hybrid_order (validated)
        return jsonify({"status": "saved"})

    @bp.route("/downloads/quality", methods=["GET"])
    def video_quality_profile():
        from . import get_video_db
        from core.video.quality_profile import load
        return jsonify(load(get_video_db()))

    @bp.route("/downloads/quality", methods=["POST"])
    def video_quality_profile_save():
        from . import get_video_db
        from core.video.quality_profile import save
        body = request.get_json(silent=True) or {}
        return jsonify(save(get_video_db(), body))

    @bp.route("/downloads/slskd", methods=["GET"])
    def video_slskd_config():
        # SHARED with music — same slskd instance. Reads the app-wide config_manager.
        from config.settings import config_manager
        return jsonify({k: config_manager.get(cfg, default)
                        for k, (cfg, default) in _SLSKD_KEYS.items()})

    @bp.route("/downloads/slskd", methods=["POST"])
    def video_slskd_config_save():
        from config.settings import config_manager
        body = request.get_json(silent=True) or {}
        for k, (cfg, _default) in _SLSKD_KEYS.items():
            if k in body:
                config_manager.set(cfg, body.get(k))
        return jsonify({"status": "saved", "shared": True})