# -*- coding: utf-8 -*-
"""ziwei-power Flask 应用 — 磁场管理打卡系统"""

import os
from datetime import timedelta
from functools import wraps
from flask import Flask, render_template, request, jsonify, session, redirect, url_for
from werkzeug.security import generate_password_hash, check_password_hash
from database import init_db, get_checkin, save_checkin, delete_checkin, get_all_checkins, get_wishes, save_wish, update_wish, delete_wish, reorder_wishes

app = Flask(__name__)
# 固定密钥确保 gunicorn 多 worker 下 session 可互通
app.secret_key = os.environ.get('SECRET_KEY', 'ziwei-power-secret-2026')

# 会话持久化：30 天
app.config['PERMANENT_SESSION_LIFETIME'] = timedelta(days=30)

# ── 用户库 ────────────────────────────────────────────

USERS = {
    'qiukai': {
        'password_hash': generate_password_hash('AiAlex2018$'),
        'name': '凯哥'
    }
}

# ── 登录检查装饰器 ────────────────────────────────────

def login_required(f):
    @wraps(f)
    def decorated(*args, **kwargs):
        if not session.get('logged_in'):
            return redirect(url_for('login_page', next=request.path))
        return f(*args, **kwargs)
    return decorated


# ── 登录路由 ──────────────────────────────────────────

@app.route('/login', methods=['GET', 'POST'])
def login_page():
    if request.method == 'POST':
        username = request.form.get('username', '').strip()
        password = request.form.get('password', '')
        remember = request.form.get('remember') == 'on'

        user = USERS.get(username)
        if user and check_password_hash(user['password_hash'], password):
            session.permanent = remember
            session['logged_in'] = True
            session['username'] = username
            session['display_name'] = user['name']
            next_url = request.args.get('next', '/')
            return jsonify({'ok': True, 'next': next_url})
        else:
            return jsonify({'ok': False, 'error': '账号或密码错误'}), 401

    # GET：如果已登录直接跳转
    if session.get('logged_in'):
        return redirect(url_for('index'))
    return render_template('login.html')


@app.route('/logout')
def logout():
    session.clear()
    return redirect(url_for('login_page'))


# ── 主页 ──────────────────────────────────────────────

def compute_stats():
    """计算统计数据，供 API 和模板共用"""
    rows = get_all_checkins()
    total_days = len(rows)
    total_morning = 0
    total_evening = 0
    total_study = 0
    calendar = {}

    for row in rows:
        d = row['date']
        data = row['data']
        morning = data.get('morning', [])
        evening = data.get('evening', [])
        study = data.get('study', [])

        morning_count = sum(1 for x in morning if isinstance(x, str) and x.strip())
        evening_count = sum(1 for x in evening if (
            isinstance(x, str) and x.strip() or
            isinstance(x, dict) and (x.get('mistake', '') or '').strip()
        ))
        study_count = sum(1 for x in study if x.get('done'))

        total_morning += morning_count
        total_evening += evening_count
        total_study += study_count

        # 新评分：3 项都有 → 达标 60 分 + 额外加分
        all_three = morning_count > 0 and evening_count > 0 and study_count > 0
        if all_three:
            extra = (morning_count - 1) + (evening_count - 1) + (study_count - 1)
            # day_score = 60 + extra * 5  (不在此处使用，仅用于日历状态)
        calendar[d] = 'pass' if all_three else 'fail'

    return dict(
        total_days=total_days, total_morning=total_morning,
        total_evening=total_evening, total_study=total_study,
        calendar=calendar
    )


@app.route('/')
@login_required
def index():
    import json
    stats = compute_stats()
    wishes = [dict(w) for w in get_wishes()]
    return render_template('index.html',
                           username=session.get('display_name', session.get('username', '')),
                           initial_stats=json.dumps(stats, ensure_ascii=False),
                           initial_wishes=json.dumps(wishes, ensure_ascii=False))


# ── API ──────────────────────────────────────────────

@app.route('/api/checkin', methods=['GET'])
@login_required
def api_get_checkin():
    date = request.args.get('date', '')
    if not date:
        return jsonify({'ok': False, 'error': '缺少 date 参数'}), 400
    row = get_checkin(date)
    return jsonify({'ok': True, 'data': row})


@app.route('/api/checkin', methods=['POST'])
@login_required
def api_save_checkin():
    body = request.get_json(force=True)
    date = body.get('date', '')
    if not date:
        return jsonify({'ok': False, 'error': '缺少 date 字段'}), 400
    data = body.get('data', {})
    save_checkin(date, data)
    return jsonify({'ok': True})


@app.route('/api/checkin/<date>', methods=['DELETE'])
@login_required
def api_delete_checkin(date):
    delete_checkin(date)
    return jsonify({'ok': True})


@app.route('/api/history', methods=['GET'])
@login_required
def api_history():
    rows = get_all_checkins()
    return jsonify({'ok': True, 'data': rows})


@app.route('/api/stats', methods=['GET'])
@login_required
def api_stats():
    stats = compute_stats()
    return jsonify({'ok': True, **stats})


@app.route('/api/user', methods=['GET'])
@login_required
def api_user():
    return jsonify({
        'ok': True,
        'username': session.get('username'),
        'display_name': session.get('display_name')
    })


# ── 心愿清单 API ──────────────────────────────

@app.route('/api/wishes', methods=['GET'])
@login_required
def api_get_wishes():
    wishes = [dict(w) for w in get_wishes()]
    return jsonify({'ok': True, 'data': wishes})


@app.route('/api/wishes', methods=['POST'])
@login_required
def api_create_wish():
    body = request.get_json(force=True)
    name = body.get('name', '').strip()
    if not name:
        return jsonify({'ok': False, 'error': '名称不能为空'}), 400
    quadrant = body.get('quadrant', '重要不紧急')
    deadline = body.get('deadline', '')
    wid = save_wish(name, quadrant, deadline)
    return jsonify({'ok': True, 'id': wid})


@app.route('/api/wishes/<int:wish_id>', methods=['PUT'])
@login_required
def api_update_wish(wish_id):
    body = request.get_json(force=True)
    update_wish(wish_id, **body)
    return jsonify({'ok': True})


@app.route('/api/wishes/<int:wish_id>', methods=['DELETE'])
@login_required
def api_delete_wish(wish_id):
    delete_wish(wish_id)
    return jsonify({'ok': True})


@app.route('/api/wishes/reorder', methods=['PUT'])
@login_required
def api_reorder_wishes():
    body = request.get_json(force=True)
    order = body.get('order', [])
    if not isinstance(order, list):
        return jsonify({'ok': False, 'error': 'order 必须是列表'}), 400
    reorder_wishes(order)
    return jsonify({'ok': True})


# ── 启动 ──────────────────────────────────────────────

if __name__ == '__main__':
    init_db()
    app.config['TEMPLATES_AUTO_RELOAD'] = True
    port = int(os.environ.get('PORT', 5058))
    app.run(host='0.0.0.0', port=port, debug=False)