# -*- coding: utf-8 -*-
import json
from datetime import datetime
from flask import Blueprint, current_app, jsonify, render_template, request

from .auth import login_required

group_plugin_config_bp = Blueprint("group_plugin_config", __name__, url_prefix="/group_plugin_config")

# 群级插件配置白名单：
# 当前业务阶段仅开放“群成员变更监控”，其余插件统一在后端拦截，
# 防止前端被绕过后写入不受控配置。
ALLOWED_PLUGIN_NAMES = {"群成员变更监控"}


def _normalize_datetime_text(value):
    if value is None:
        return value
    if isinstance(value, datetime):
        return value.strftime("%Y-%m-%d %H:%M:%S")
    text = str(value)
    if "T" in text:
        return text.replace("T", " ")[:19]
    return text


def _is_plugin_allowed(plugin_name: str) -> bool:
    """检查插件名是否在群级配置白名单内。"""
    return str(plugin_name or "").strip() in ALLOWED_PLUGIN_NAMES


@group_plugin_config_bp.route("/")
@login_required
def page_group_plugin_config():
    return render_template("group_plugin_config.html")


@group_plugin_config_bp.route("/api/list", methods=["GET"])
@login_required
def api_list_group_plugin_config():
    server = current_app.dashboard_server
    service = server.group_plugin_config_service
    group_id = str(request.args.get("group_id", "") or "").strip()
    plugin_name = str(request.args.get("plugin_name", "") or "").strip()
    # 列表接口默认仅返回白名单插件，避免管理端仍出现其它插件配置。
    # 若传入了非白名单插件名，直接返回空列表。
    if plugin_name and not _is_plugin_allowed(plugin_name):
        return jsonify({"success": True, "data": []})
    if not plugin_name:
        # service.list_configs 当前仅支持单个 plugin_name 过滤参数，
        # 这里通过遍历白名单并聚合，确保结果严格受控。
        rows = []
        for allowed_name in sorted(ALLOWED_PLUGIN_NAMES):
            rows.extend(service.list_configs(group_id=group_id, plugin_name=allowed_name))
    else:
        rows = service.list_configs(group_id=group_id, plugin_name=plugin_name)
    for row in rows:
        row["created_at"] = _normalize_datetime_text(row.get("created_at"))
        row["updated_at"] = _normalize_datetime_text(row.get("updated_at"))
    return jsonify({"success": True, "data": rows})


@group_plugin_config_bp.route("/api/plugins", methods=["GET"])
@login_required
def api_list_plugins():
    # 插件下拉框只暴露白名单，前端无需自行过滤。
    return jsonify({"success": True, "data": sorted(ALLOWED_PLUGIN_NAMES)})


@group_plugin_config_bp.route("/api/upsert", methods=["POST"])
@login_required
def api_upsert_group_plugin_config():
    server = current_app.dashboard_server
    service = server.group_plugin_config_service
    payload = request.get_json(silent=True) or {}

    group_id = str(payload.get("group_id") or "").strip()
    plugin_name = str(payload.get("plugin_name") or "").strip()
    config_key = str(payload.get("config_key") or "default").strip() or "default"
    enabled = bool(payload.get("enabled", True))
    config_data = payload.get("config_json")
    updated_by = str(payload.get("updated_by") or "dashboard").strip() or "dashboard"

    if not group_id or not plugin_name:
        return jsonify({"success": False, "message": "group_id 或 plugin_name 不能为空"}), 400
    if not _is_plugin_allowed(plugin_name):
        return jsonify({"success": False, "message": f"当前仅允许配置：{','.join(sorted(ALLOWED_PLUGIN_NAMES))}"}), 400

    if isinstance(config_data, str):
        try:
            config_data = json.loads(config_data)
        except Exception:
            return jsonify({"success": False, "message": "config_json 不是合法 JSON"}), 400
    if not isinstance(config_data, dict):
        return jsonify({"success": False, "message": "config_json 必须是对象"}), 400

    ok = service.upsert_config(
        group_id=group_id,
        plugin_name=plugin_name,
        config_key=config_key,
        config_data=config_data,
        enabled=enabled,
        updated_by=updated_by,
    )
    if not ok:
        return jsonify({"success": False, "message": "保存失败"}), 500
    return jsonify({"success": True, "message": "保存成功（MySQL + Redis已刷新）"})


@group_plugin_config_bp.route("/api/delete", methods=["POST"])
@login_required
def api_delete_group_plugin_config():
    server = current_app.dashboard_server
    service = server.group_plugin_config_service
    payload = request.get_json(silent=True) or {}
    group_id = str(payload.get("group_id") or "").strip()
    plugin_name = str(payload.get("plugin_name") or "").strip()
    config_key = str(payload.get("config_key") or "default").strip() or "default"
    if not group_id or not plugin_name:
        return jsonify({"success": False, "message": "group_id 或 plugin_name 不能为空"}), 400
    if not _is_plugin_allowed(plugin_name):
        return jsonify({"success": False, "message": f"当前仅允许配置：{','.join(sorted(ALLOWED_PLUGIN_NAMES))}"}), 400

    ok = service.delete_config(group_id=group_id, plugin_name=plugin_name, config_key=config_key)
    if not ok:
        return jsonify({"success": False, "message": "删除失败"}), 500
    return jsonify({"success": True, "message": "删除成功（MySQL + Redis已同步）"})