"""Primary LoraTester server: REST API + web UI."""

import time
from pathlib import Path

from flask import Flask, jsonify, request, send_from_directory
from flask_cors import CORS

from core.auth import ANDROID_CLIENT_HEADER, is_android_client
from core.config import HOST, PORT
from core.models import ChatIn, TelemetryIn
from core import storage
from core.telemetry_body import telemetry_from_body

STATIC_DIR = Path(__file__).resolve().parent / "static"

app = Flask(__name__, static_folder=str(STATIC_DIR), static_url_path="/static")
CORS(app)

storage.init_db()


@app.route("/")
def index():
    resp = send_from_directory(STATIC_DIR, "index.html")
    resp.headers["Cache-Control"] = "no-store"
    return resp


@app.post("/api/telemetry")
def post_telemetry():
    if not is_android_client(request.headers):
        return jsonify({
            "error": "telemetry only from Android app",
            "hint": f"send header {ANDROID_CLIENT_HEADER}: android",
        }), 403
    body = request.get_json(force=True, silent=True) or {}
    device_id = body.get("device_id")
    if not device_id:
        return jsonify({"error": "device_id required"}), 400
    try:
        data = telemetry_from_body({**body, "device_id": device_id})
        return jsonify(storage.record_telemetry(data))
    except ValueError as e:
        return jsonify({"error": str(e)}), 400


@app.get("/api/devices")
def get_devices():
    return jsonify(storage.list_devices())


@app.get("/api/telemetry")
def get_telemetry_history():
    device_id = request.args.get("device_id")
    limit = int(request.args.get("limit", 100))
    since = _float_or_none(request.args.get("since"))
    until = _float_or_none(request.args.get("until"))
    role = request.args.get("role")
    return jsonify(storage.get_telemetry(device_id, limit, since, until, role))


@app.get("/api/stats/history")
def get_stats_history():
    device_id = request.args.get("device_id")
    if not device_id:
        return jsonify({"error": "device_id required"}), 400
    limit = int(request.args.get("limit", 50))
    since = _float_or_none(request.args.get("since"))
    until = _float_or_none(request.args.get("until"))
    role = request.args.get("role")
    return jsonify(storage.get_telemetry(device_id, limit, since, until, role))


@app.post("/api/tracks/start")
def tracks_start():
    if not is_android_client(request.headers):
        return jsonify({"error": "Android only"}), 403
    body = request.get_json(force=True, silent=True) or {}
    device_id = body.get("device_id")
    if not device_id:
        return jsonify({"error": "device_id required"}), 400
    try:
        return jsonify(storage.start_track(str(device_id), body.get("label")))
    except ValueError as e:
        return jsonify({"error": str(e)}), 400


@app.post("/api/tracks/<int:track_id>/points")
def tracks_points(track_id: int):
    if not is_android_client(request.headers):
        return jsonify({"error": "Android only"}), 403
    body = request.get_json(force=True, silent=True) or {}
    points = body.get("points") or []
    try:
        return jsonify(storage.add_track_points(track_id, points))
    except ValueError as e:
        return jsonify({"error": str(e)}), 400


@app.post("/api/tracks/<int:track_id>/finish")
def tracks_finish(track_id: int):
    if not is_android_client(request.headers):
        return jsonify({"error": "Android only"}), 403
    try:
        return jsonify(storage.finish_track(track_id))
    except ValueError as e:
        return jsonify({"error": str(e)}), 400


@app.get("/api/tracks")
def tracks_list():
    device_id = request.args.get("device_id")
    limit = int(request.args.get("limit", 50))
    return jsonify(storage.list_tracks(device_id, limit))


@app.get("/api/tracks/<int:track_id>")
def tracks_get(track_id: int):
    try:
        return jsonify(storage.get_track(track_id))
    except ValueError as e:
        return jsonify({"error": str(e)}), 404


@app.post("/api/chat")
def post_chat():
    body = request.get_json(force=True, silent=True) or {}
    device_id = body.get("device_id")
    text = (body.get("text") or "").strip()
    if not device_id or not text:
        return jsonify({"error": "device_id and text required"}), 400
    data = ChatIn(
        device_id=str(device_id),
        text=text,
        ts=_float_or_none(body.get("ts")),
    )
    return jsonify(storage.add_chat(data))


@app.get("/api/chat")
def get_chat():
    since = float(request.args.get("since", 0))
    limit = int(request.args.get("limit", 200))
    return jsonify(storage.get_chat(since, limit))


@app.get("/api/health")
def health():
    status = storage.db_status()
    return jsonify({"ok": status["db_ok"], "ts": time.time(), **status})


def _float_or_none(value):
    if value is None or value == "":
        return None
    try:
        return float(value)
    except (TypeError, ValueError):
        return None


if __name__ == "__main__":
    app.run(host=HOST, port=PORT, debug=True)