"""crypto_okx_hub — 期权多机中控."""
from __future__ import annotations

import os
import sys
import threading
import time
from functools import wraps
from pathlib import Path

from dotenv import load_dotenv
from flask import (
    Flask,
    Response,
    flash,
    jsonify,
    redirect,
    render_template,
    request,
    send_file,
    session,
    url_for,
)

ROOT = Path(__file__).resolve().parent
if str(ROOT) not in sys.path:
    sys.path.insert(0, str(ROOT))

ENV_PATH = ROOT / ".env"
load_dotenv(ENV_PATH)

from lib.backup_lib import (
    backup_dir as hub_backup_dir,
    backup_keep_days as hub_backup_keep_days,
    backup_path as hub_backup_path,
    create_backup as create_hub_backup,
    list_backups as list_hub_backups,
    restore_backup as restore_hub_backup,
    save_uploaded_backup as save_hub_uploaded_backup,
    start_backup_scheduler as start_hub_backup_scheduler,
)
from lib.bridge_client_lib import (
    dispatch_cond_order_to_ids,
    fetch_backup_file,
    fetch_backup_list,
    fetch_client_version,
    fetch_cond_orders,
    post_client_update,
    post_close_full,
    post_cond_cancel,
    post_cond_exit,
    pull_all_enabled,
)
from lib.cash_sample_lib import record_cash_samples_from_overview
from lib.db_lib import db_path as hub_db_path, init_db
from lib.env_lib import apply_env_updates, env_get
from lib.health_watch_lib import inspect_overview_rows
from lib.instances_lib import (
    create_instance,
    delete_instance,
    get_instance,
    list_instances,
    update_instance,
)
from lib.sso_lib import build_embed_open_url
from lib.stats_agg_lib import build_stats_curve, build_stats_summary, normalize_window
from lib.wechat_lib import (
    hub_alert_cooldown_sec,
    hub_health_fail_threshold,
    hub_wechat_enabled,
    hub_wechat_webhook,
    send_hub_wechat,
)

APP_HOST = (os.getenv("APP_HOST") or "0.0.0.0").strip() or "0.0.0.0"
APP_PORT = int(os.getenv("APP_PORT") or 5100)
SECRET = (os.getenv("FLASK_SECRET_KEY") or "hub-dev-secret").strip()

# 可变登录态:系统设置页可改,并立刻生效
_auth = {
    "username": (os.getenv("HUB_USERNAME") or "admin").strip() or "admin",
    "password": (os.getenv("HUB_PASSWORD") or "admin123").strip() or "admin123",
}

app = Flask(__name__)
app.secret_key = SECRET
app.config["TEMPLATES_AUTO_RELOAD"] = True

init_db()


def hub_username() -> str:
    return _auth["username"]


def hub_password() -> str:
    return _auth["password"]


def set_hub_credentials(username: str, password: str) -> None:
    u = (username or "").strip() or "admin"
    p = password if password is not None else ""
    _auth["username"] = u
    _auth["password"] = p
    os.environ["HUB_USERNAME"] = u
    os.environ["HUB_PASSWORD"] = p


def login_required(f):
    @wraps(f)
    def wrapped(*args, **kwargs):
        if session.get("logged_in"):
            return f(*args, **kwargs)
        if request.path.startswith("/api/"):
            return jsonify({"ok": False, "msg": "未登录"}), 401
        return redirect(url_for("login", next=request.path))

    return wrapped


@app.route("/login", methods=["GET", "POST"])
def login():
    if request.method == "POST":
        u = (request.form.get("username") or "").strip()
        p = request.form.get("password") or ""
        if u == hub_username() and p == hub_password():
            session["logged_in"] = True
            session.permanent = True
            nxt = (request.args.get("next") or request.form.get("next") or "/").strip() or "/"
            if not nxt.startswith("/"):
                nxt = "/"
            return redirect(nxt)
        flash("用户名或密码错误")
    if session.get("logged_in"):
        return redirect("/")
    return render_template("login.html")


@app.route("/logout")
def logout():
    session.clear()
    return redirect(url_for("login"))


@app.route("/")
@login_required
def dashboard():
    return render_template("dashboard.html")


@app.route("/stats")
@login_required
def stats_page():
    return render_template("stats.html")


@app.route("/api/stats/summary")
@login_required
def api_stats_summary():
    window = normalize_window(request.args.get("window") or "7d")
    try:
        return jsonify(build_stats_summary(window))
    except Exception as e:
        return jsonify({"ok": False, "msg": str(e) or "统计失败"}), 500


@app.route("/api/stats/curve")
@login_required
def api_stats_curve():
    range_key = normalize_window(request.args.get("range") or request.args.get("window") or "7d")
    try:
        return jsonify(build_stats_curve(range_key))
    except Exception as e:
        return jsonify({"ok": False, "msg": str(e) or "曲线失败"}), 500


@app.route("/instances", methods=["GET", "POST"])
@login_required
def instances_page():
    if request.method == "POST":
        action = (request.form.get("action") or "create").strip()
        if action == "create":
            _, err = create_instance(
                name=request.form.get("name") or "",
                base_url=request.form.get("base_url") or "",
                bridge_token=request.form.get("bridge_token") or "",
                embed_path=request.form.get("embed_path") or "/embed",
                tags=request.form.get("tags") or "",
                enabled=bool(request.form.get("enabled")),
            )
            flash(err or "已添加")
        elif action == "update":
            iid = int(request.form.get("id") or 0)
            _, err = update_instance(
                iid,
                name=request.form.get("name") or "",
                base_url=request.form.get("base_url") or "",
                bridge_token=request.form.get("bridge_token") or "",
                embed_path=request.form.get("embed_path") or "/embed",
                tags=request.form.get("tags") or "",
                enabled=bool(request.form.get("enabled")),
            )
            flash(err or "已保存")
        elif action == "delete":
            iid = int(request.form.get("id") or 0)
            ok = delete_instance(iid)
            flash("已删除" if ok else "删除失败")
        return redirect(url_for("instances_page"))
    return render_template("instances.html", instances=list_instances())


def _wechat_settings_view() -> dict:
    enabled_raw = (env_get(ENV_PATH, "HUB_WECHAT_ENABLED") or os.getenv("HUB_WECHAT_ENABLED") or "").strip().lower()
    if enabled_raw in ("0", "false", "no", "off"):
        enabled = False
    elif enabled_raw in ("1", "true", "yes", "on"):
        enabled = True
    else:
        enabled = bool(hub_wechat_webhook())
    return {
        "enabled": enabled,
        "webhook": hub_wechat_webhook() or env_get(ENV_PATH, "HUB_WECHAT_WEBHOOK", ""),
        "cooldown_sec": hub_alert_cooldown_sec(),
        "fail_threshold": hub_health_fail_threshold(),
    }


def _apply_runtime_env(updates: dict[str, str]) -> None:
    for key, val in updates.items():
        os.environ[key] = str(val)


def _handle_account_settings() -> None:
    current_pw = request.form.get("current_password") or ""
    new_username = (request.form.get("new_username") or "").strip()
    new_password = request.form.get("new_password") or ""
    confirm = request.form.get("confirm_password") or ""

    if current_pw != hub_password():
        flash("当前密码错误")
        return
    if len(new_username) < 2 or len(new_username) > 64:
        flash("用户名长度需为 2–64")
        return
    if any(ch.isspace() for ch in new_username):
        flash("用户名不能包含空格")
        return

    updates: dict[str, str] = {"HUB_USERNAME": new_username}
    final_password = hub_password()
    if new_password or confirm:
        if len(new_password) < 6:
            flash("新密码至少 6 位")
            return
        if new_password != confirm:
            flash("两次输入的新密码不一致")
            return
        updates["HUB_PASSWORD"] = new_password
        final_password = new_password

    try:
        apply_env_updates(ENV_PATH, updates)
    except OSError as exc:
        flash(f"写入 .env 失败: {exc}")
        return

    set_hub_credentials(new_username, final_password)
    flash("账号已更新,立即生效")


def _handle_wechat_settings(*, send_test: bool = False) -> None:
    enabled = "1" if (request.form.get("wechat_enabled") or "") in ("1", "on", "true") else "0"
    webhook = (request.form.get("wechat_webhook") or "").strip()
    try:
        cooldown = max(60, int(float(request.form.get("alert_cooldown_sec") or 600)))
    except (TypeError, ValueError):
        flash("告警冷却须为数字(秒)")
        return
    try:
        threshold = max(1, int(float(request.form.get("health_fail_threshold") or 2)))
    except (TypeError, ValueError):
        flash("连续失败阈值须为正整数")
        return

    updates = {
        "HUB_WECHAT_ENABLED": "true" if enabled == "1" else "false",
        "HUB_WECHAT_WEBHOOK": webhook,
        "HUB_ALERT_COOLDOWN_SEC": str(cooldown),
        "HUB_HEALTH_FAIL_THRESHOLD": str(threshold),
    }
    try:
        apply_env_updates(ENV_PATH, updates)
    except OSError as exc:
        flash(f"写入 .env 失败: {exc}")
        return
    _apply_runtime_env(updates)

    if send_test:
        result = send_hub_wechat("中控企业微信测试消息\n配置已保存并立即生效")
        if result.get("ok"):
            flash("告警配置已保存,测试消息已发送")
        else:
            flash(f"告警配置已保存,但测试发送失败: {result.get('msg') or '未知错误'}")
        return
    flash("企业微信告警配置已保存,立即生效")


@app.route("/settings", methods=["GET", "POST"])
@login_required
def settings_page():
    if request.method == "POST":
        action = (request.form.get("form_action") or "account").strip()
        return_tab = (request.form.get("return_tab") or "").strip()
        if action == "wechat":
            _handle_wechat_settings(send_test=False)
            return_tab = return_tab or "wechat"
        elif action == "wechat_test":
            _handle_wechat_settings(send_test=True)
            return_tab = return_tab or "wechat"
        else:
            _handle_account_settings()
            return_tab = return_tab or "account"
        if return_tab not in ("account", "wechat", "backup"):
            return_tab = "account"
        return redirect(url_for("settings_page", tab=return_tab))

    return render_template(
        "settings.html",
        current_username=hub_username(),
        wechat=_wechat_settings_view(),
    )


@app.route("/api/settings/backup/hub/list", methods=["GET"])
@login_required
def api_hub_backup_list():
    return jsonify(
        {
            "ok": True,
            "items": list_hub_backups(),
            "backup_dir": hub_backup_dir(),
            "keep_days": hub_backup_keep_days(),
            "auto_hour_bj": 3,
            "includes": [".env", "database"],
        }
    )


def _resolved_hub_db_path() -> str:
    p = hub_db_path()
    if os.path.isabs(p):
        return p
    return str(ROOT / p)


@app.route("/api/settings/backup/hub/create", methods=["POST"])
@login_required
def api_hub_backup_create():
    try:
        result = create_hub_backup(
            root_dir=str(ROOT),
            env_path=str(ENV_PATH),
            db_path=_resolved_hub_db_path(),
            label="manual",
            username=hub_username(),
            password=hub_password(),
        )
        return jsonify(result)
    except Exception as exc:
        return jsonify({"ok": False, "msg": str(exc) or "备份失败"}), 500


@app.route("/api/settings/backup/hub/download/<name>", methods=["GET"])
@login_required
def api_hub_backup_download(name: str):
    path = hub_backup_path(name)
    if not path or not os.path.isfile(path):
        return jsonify({"ok": False, "msg": "备份不存在"}), 404
    return send_file(
        path,
        mimetype="application/gzip",
        as_attachment=True,
        download_name=os.path.basename(path),
    )


@app.route("/api/settings/backup/hub/restore", methods=["POST"])
@login_required
def api_hub_backup_restore():
    data = request.get_json(silent=True) or {}
    name = str(data.get("name") or "").strip()
    if not name:
        return jsonify({"ok": False, "msg": "缺少备份文件名"}), 400
    result = restore_hub_backup(
        name,
        root_dir=str(ROOT),
        env_path=str(ENV_PATH),
        db_path=_resolved_hub_db_path(),
    )
    if result.get("ok"):
        u = str(result.get("hub_username") or "").strip()
        p = result.get("hub_password")
        if u or p is not None:
            set_hub_credentials(u or hub_username(), "" if p is None else str(p))
        result.pop("hub_password", None)
    return jsonify(result), (200 if result.get("ok") else 400)


@app.route("/api/settings/backup/hub/upload", methods=["POST"])
@login_required
def api_hub_backup_upload():
    fs = request.files.get("file")
    if fs is None or not getattr(fs, "filename", None):
        return jsonify({"ok": False, "msg": "请选择备份文件"}), 400
    result = save_hub_uploaded_backup(fs)
    return jsonify(result), (200 if result.get("ok") else 400)


@app.route("/api/settings/backup/instances", methods=["GET"])
@login_required
def api_backup_instances():
    items = [
        {
            "id": i["id"],
            "name": i.get("name") or f"#{i['id']}",
            "enabled": bool(i.get("enabled")),
        }
        for i in list_instances(enabled_only=False)
    ]
    return jsonify({"ok": True, "items": items})


@app.route("/api/settings/backup/client/<int:iid>/list", methods=["GET"])
@login_required
def api_client_backup_list(iid: int):
    inst = get_instance(iid)
    if not inst:
        return jsonify({"ok": False, "msg": "实例不存在", "items": []}), 404
    result = fetch_backup_list(inst)
    code = 200 if result.get("ok") else 502
    return jsonify(result), code


@app.route("/api/settings/backup/client/<int:iid>/download/<name>", methods=["GET"])
@login_required
def api_client_backup_download(iid: int, name: str):
    inst = get_instance(iid)
    if not inst:
        return jsonify({"ok": False, "msg": "实例不存在"}), 404
    ok, content, meta = fetch_backup_file(inst, name)
    if not ok or content is None:
        return jsonify({"ok": False, "msg": meta or "下载失败"}), 502
    return Response(
        content,
        mimetype="application/gzip",
        headers={
            "Content-Disposition": f'attachment; filename="{os.path.basename(meta)}"'
        },
    )


@app.route("/desk")
@login_required
def desk():
    instances = list_instances(enabled_only=True)
    iid = request.args.get("id")
    # 未指定客户端时默认打开第一个
    if (not iid or not str(iid).isdigit()) and instances:
        return redirect(url_for("desk", id=instances[0]["id"]))
    inst = None
    open_url = ""
    if iid and str(iid).isdigit():
        inst = get_instance(int(iid))
        if inst:
            open_url = build_embed_open_url(
                inst["base_url"],
                bridge_token=inst["bridge_token"],
                embed_path=inst.get("embed_path") or "/embed",
                ttl_sec=3600,
            )
    return render_template(
        "desk.html",
        instances=instances,
        current=inst,
        open_url=open_url,
    )


@app.route("/api/overview")
@login_required
def api_overview():
    rows = pull_all_enabled()
    return jsonify({"ok": True, "instances": rows})


def _health_pull_interval_sec() -> float:
    try:
        return max(5.0, float(os.getenv("HUB_PULL_INTERVAL_SEC") or 10))
    except (TypeError, ValueError):
        return 10.0


def _health_watch_loop() -> None:
    """后台巡检:即使无人打开总览也会告警;并采样余额曲线."""
    while True:
        try:
            rows = pull_all_enabled()
            inspect_overview_rows(rows)
            record_cash_samples_from_overview(rows)
        except Exception:
            pass
        time.sleep(_health_pull_interval_sec())


def start_health_watch() -> None:
    t = threading.Thread(target=_health_watch_loop, name="hub-health-watch", daemon=True)
    t.start()


start_health_watch()

try:
    start_hub_backup_scheduler(
        root_dir=str(ROOT),
        env_path=str(ENV_PATH),
        db_path_fn=_resolved_hub_db_path,
        hour=3,
        get_credentials=lambda: (hub_username(), hub_password()),
    )
except Exception as _hub_bak_err:
    print(f"[backup] scheduler: {_hub_bak_err}")


@app.route("/api/instances/<int:iid>/open_url")
@login_required
def api_open_url(iid: int):
    inst = get_instance(iid)
    if not inst:
        return jsonify({"ok": False, "msg": "不存在"}), 404
    url = build_embed_open_url(
        inst["base_url"],
        bridge_token=inst["bridge_token"],
        embed_path=inst.get("embed_path") or "/embed",
        ttl_sec=3600,
    )
    return jsonify({"ok": True, "url": url, "base_url": inst["base_url"]})


@app.route("/api/settings/update/hub/version", methods=["GET"])
@login_required
def api_hub_self_version():
    from lib.update_lib import read_git_version

    return jsonify(read_git_version())


@app.route("/api/settings/update/hub", methods=["POST"])
@login_required
def api_hub_self_update():
    """系统设置:中控本机快速更新."""
    from lib.update_lib import schedule_pull_and_restart

    try:
        # 同步 pull + 延迟重启;timeout 留给 git pull
        result = schedule_pull_and_restart(delay_seconds=1.2)
    except Exception as e:
        result = {"ok": False, "msg": f"触发更新异常: {e}", "deferred": False}
    return jsonify(result), (200 if result.get("ok") else 400)


@app.route("/api/settings/update/clients", methods=["GET"])
@login_required
def api_update_clients():
    items = [
        {
            "id": i["id"],
            "name": i.get("name") or f"#{i['id']}",
            "base_url": i.get("base_url") or "",
            "enabled": bool(i.get("enabled")),
        }
        for i in list_instances(enabled_only=False)
    ]
    return jsonify({"ok": True, "items": items})


@app.route("/api/instances/<int:iid>/version", methods=["GET"])
@login_required
def api_instance_version(iid: int):
    inst = get_instance(iid)
    if not inst:
        return jsonify({"ok": False, "msg": "实例不存在", "online": False}), 404
    result = fetch_client_version(inst)
    code = 200 if result.get("online") else 502
    return jsonify(result), code


@app.route("/api/instances/<int:iid>/update", methods=["POST"])
@login_required
def api_instance_update(iid: int):
    """系统设置远程更新客户端:转发 Bridge /api/hub/update."""
    inst = get_instance(iid)
    if not inst:
        return jsonify({"ok": False, "msg": "实例不存在"}), 404
    if not inst.get("enabled"):
        return jsonify({"ok": False, "msg": "实例未启用"}), 400
    result = post_client_update(inst)
    status = 200
    if not result.get("ok"):
        msg = str(result.get("msg") or "")
        if msg.startswith("HTTP ") or "超时" in msg or "下发失败" in msg or "缺少 URL" in msg:
            status = 502
        else:
            status = 400
    return jsonify(result), status


@app.route("/api/instances/<int:iid>/options/close", methods=["POST"])
@login_required
def api_instance_options_close(iid: int):
    """总览下发全平:中控只转发,客户端本地买一限价执行."""
    inst = get_instance(iid)
    if not inst:
        return jsonify({"ok": False, "msg": "实例不存在"}), 404
    if not inst.get("enabled"):
        return jsonify({"ok": False, "msg": "实例未启用"}), 400
    data = request.get_json(silent=True) or {}
    opt_inst = (data.get("inst_id") or "").strip()
    if not opt_inst:
        return jsonify({"ok": False, "msg": "缺少 inst_id"})
    result = post_close_full(inst, inst_id=opt_inst)
    status = 200
    if not result.get("ok"):
        # 客户端业务拒绝(残档等)仍 200 带 ok:false;仅传输层失败用 502
        msg = str(result.get("msg") or "")
        if msg.startswith("HTTP ") or "超时" in msg or "下发失败" in msg or "缺少 URL" in msg:
            status = 502
    return jsonify(result), status


@app.route("/cond_orders")
@login_required
def cond_orders_page():
    return render_template("cond_orders.html")


@app.route("/api/cond_orders/candidates")
@login_required
def api_cond_order_candidates():
    """可选客户端:在线且无持仓、未被条件单锁定."""
    rows = pull_all_enabled()
    out = []
    for row in rows:
        snap = row.get("snapshot") if isinstance(row.get("snapshot"), dict) else {}
        brief = snap.get("positions_brief") or snap.get("positions") or []
        has_pos = isinstance(brief, list) and len(brief) > 0
        locked = bool(snap.get("cond_order_locked"))
        selectable = bool(row.get("online")) and not has_pos and not locked
        inst = snap.get("instance") if isinstance(snap.get("instance"), dict) else {}
        mode = str(inst.get("mode") or "").strip().lower()
        if mode not in ("sim", "live"):
            mode = ""
        out.append(
            {
                "id": row.get("id"),
                "name": row.get("name"),
                "online": bool(row.get("online")),
                "has_position": has_pos,
                "cond_order_locked": locked,
                "selectable": selectable,
                "mode": mode,
                "error": row.get("error") or "",
            }
        )
    return jsonify({"ok": True, "instances": out})


@app.route("/api/cond_orders", methods=["GET"])
@login_required
def api_cond_orders_list():
    instances = list_instances(enabled_only=True)
    all_orders = []
    for inst in instances:
        data = fetch_cond_orders(inst)
        for o in data.get("orders") or []:
            if not isinstance(o, dict):
                continue
            item = dict(o)
            item["instance_id"] = inst.get("id")
            item["instance_name"] = inst.get("name")
            all_orders.append(item)
    return jsonify({"ok": True, "orders": all_orders})


@app.route("/api/cond_orders", methods=["POST"])
@login_required
def api_cond_orders_create():
    import uuid

    data = request.get_json(silent=True) or {}
    ids_raw = data.get("instance_ids") or []
    try:
        instance_ids = [int(x) for x in ids_raw]
    except (TypeError, ValueError):
        return jsonify({"ok": False, "msg": "instance_ids 无效"})
    if not instance_ids:
        return jsonify({"ok": False, "msg": "请选择客户端"})

    # 再次按快照过滤有仓/锁定
    rows = {r.get("id"): r for r in pull_all_enabled()}
    allowed = []
    rejected = []
    for iid in instance_ids:
        row = rows.get(iid)
        if not row or not row.get("online"):
            rejected.append({"instance_id": iid, "msg": "离线或不可用"})
            continue
        snap = row.get("snapshot") if isinstance(row.get("snapshot"), dict) else {}
        brief = snap.get("positions_brief") or []
        if brief:
            rejected.append({"instance_id": iid, "msg": "已有持仓不可选"})
            continue
        if snap.get("cond_order_locked"):
            rejected.append({"instance_id": iid, "msg": "已有条件单占用"})
            continue
        allowed.append(iid)
    if not allowed:
        return jsonify({"ok": False, "msg": "没有可下发的客户端", "rejected": rejected})

    hub_order_id = (data.get("hub_order_id") or "").strip() or str(uuid.uuid4())
    opt_type = (data.get("opt_type") or "P").strip().upper()
    if opt_type not in ("P", "C"):
        opt_type = "P"
    # 左侧单:看跌上穿、看涨下穿
    trigger_side = "gte" if opt_type == "P" else "lte"
    payload = {
        "hub_order_id": hub_order_id,
        "underlying": (data.get("underlying") or "ETH").strip().upper(),
        "opt_type": opt_type,
        "trigger_side": trigger_side,
        "trigger_px": data.get("trigger_px"),
        "deviation_pct": data.get("deviation_pct"),
        "min_expiry_hours": data.get("min_expiry_hours"),
        "exit": {
            "target_index": data.get("target_index"),
            "profit_exit_enabled": bool(data.get("profit_exit_enabled")),
            "profit_exit_mult": data.get("profit_exit_mult"),
        },
    }
    results = dispatch_cond_order_to_ids(allowed, payload)
    ok_n = sum(1 for r in results if r.get("ok"))
    return jsonify(
        {
            "ok": ok_n > 0,
            "msg": f"成功 {ok_n}/{len(results)}",
            "hub_order_id": hub_order_id,
            "results": results,
            "rejected": rejected,
        }
    )


@app.route("/api/cond_orders/<hub_order_id>/cancel", methods=["POST"])
@login_required
def api_cond_orders_cancel(hub_order_id: str):
    data = request.get_json(silent=True) or {}
    iid = data.get("instance_id")
    if iid is None:
        return jsonify({"ok": False, "msg": "缺少 instance_id"})
    inst = get_instance(int(iid))
    if not inst:
        return jsonify({"ok": False, "msg": "实例不存在"}), 404
    return jsonify(post_cond_cancel(inst, hub_order_id))


@app.route("/api/cond_orders/<hub_order_id>/exit", methods=["POST"])
@login_required
def api_cond_orders_exit(hub_order_id: str):
    data = request.get_json(silent=True) or {}
    iid = data.get("instance_id")
    if iid is None:
        return jsonify({"ok": False, "msg": "缺少 instance_id"})
    inst = get_instance(int(iid))
    if not inst:
        return jsonify({"ok": False, "msg": "实例不存在"}), 404
    payload = {
        "target_index": data.get("target_index"),
        "profit_exit_enabled": data.get("profit_exit_enabled"),
        "profit_exit_mult": data.get("profit_exit_mult"),
    }
    return jsonify(post_cond_exit(inst, hub_order_id, payload))


@app.route("/manifest.webmanifest")
def pwa_manifest():
    path = ROOT / "static" / "icons" / "manifest.webmanifest"
    return send_file(path, mimetype="application/manifest+json; charset=utf-8")


@app.route("/sw.js")
def pwa_service_worker():
    path = ROOT / "static" / "sw.js"
    resp = send_file(path, mimetype="application/javascript; charset=utf-8")
    resp.headers["Cache-Control"] = "no-cache"
    resp.headers["Service-Worker-Allowed"] = "/"
    return resp


if __name__ == "__main__":
    # PM2 下禁止 debug reloader,否则会 Bad file descriptor 崩循环
    _debug = (os.getenv("APP_DEBUG") or "").strip().lower() in ("1", "true", "yes", "on")
    app.run(
        host=APP_HOST,
        port=APP_PORT,
        debug=_debug,
        use_reloader=False,
        threaded=True,
    )