# -*- coding: utf-8 -*-
"""
数据库层：SQLite 统一存储结构化数据。
Schema 采用"运动-联赛-球队-球员-比赛"分层设计，天然支持扩展：
  - 新增 CBA     → sports 表加一行 basketball，leagues 表加 CBA（复用全部代码）
  - 新增足球     → sports 表加 football，league 可加 英超/西甲，球员字段可扩展
  - 新增人物角色 → persons.role 自由扩展（coach/agent/commentator/host/gm...）
"""
import sqlite3
import threading

from config import DB_PATH

_SCHEMA = """
CREATE TABLE IF NOT EXISTS sports (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  code TEXT UNIQUE NOT NULL,          -- 'basketball' / 'football' ...
  name TEXT NOT NULL,                 -- '篮球' / '足球'
  name_en TEXT,
  created_at TEXT DEFAULT (datetime('now','localtime'))
);

CREATE TABLE IF NOT EXISTS leagues (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  sport_id INTEGER NOT NULL REFERENCES sports(id),
  code TEXT UNIQUE NOT NULL,          -- 'NBA' / 'CBA' / 'EPL'
  name TEXT NOT NULL,                 -- '美国职业篮球联赛'
  name_en TEXT,
  country TEXT,
  season TEXT,                        -- '2025-26'
  created_at TEXT DEFAULT (datetime('now','localtime'))
);

CREATE TABLE IF NOT EXISTS teams (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  league_id INTEGER NOT NULL REFERENCES leagues(id),
  code TEXT,                          -- 'LAL'
  name TEXT NOT NULL,                 -- '洛杉矶湖人'
  name_en TEXT,                       -- 'Los Angeles Lakers'
  city TEXT,
  arena TEXT,
  founded INTEGER,
  champion_count INTEGER,
  head_coach TEXT,
  logo_url TEXT,
  intro TEXT,
  created_at TEXT DEFAULT (datetime('now','localtime'))
);

CREATE TABLE IF NOT EXISTS players (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  team_id INTEGER REFERENCES teams(id),
  name TEXT NOT NULL,
  name_en TEXT,
  position TEXT,                      -- PG/SG/SF/PF/C
  number INTEGER,
  height_cm INTEGER,
  weight_kg INTEGER,
  birth_date TEXT,
  country TEXT,
  draft_year INTEGER,
  draft_pick INTEGER,                 -- 0 = 落选
  salary_m REAL,                      -- 年薪（万美元）
  season_pts REAL, season_reb REAL, season_ast REAL,
  season_stl REAL, season_blk REAL, season_min REAL,   -- 本赛季场均
  career_pts REAL, career_reb REAL, career_ast REAL,   -- 生涯场均
  career_games INTEGER,
  career_steals INTEGER, career_blocks INTEGER,        -- 生涯总数
  awards TEXT,                        -- 主要荣誉
  bio TEXT,
  created_at TEXT DEFAULT (datetime('now','localtime'))
);

CREATE TABLE IF NOT EXISTS games (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  league_id INTEGER NOT NULL REFERENCES leagues(id),
  season TEXT,
  round_name TEXT,                    -- 常规赛/季后赛首轮/总决赛...
  game_time TEXT,                     -- '2026-06-05 09:00'
  status TEXT,                        -- scheduled / finished / live
  home_team_id INTEGER REFERENCES teams(id),
  away_team_id INTEGER REFERENCES teams(id),
  home_score INTEGER,
  away_score INTEGER,
  venue TEXT,
  broadcast TEXT,
  created_at TEXT DEFAULT (datetime('now','localtime'))
);

CREATE TABLE IF NOT EXISTS game_player_stats (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  game_id INTEGER NOT NULL REFERENCES games(id),
  player_id INTEGER NOT NULL REFERENCES players(id),
  team_id INTEGER NOT NULL REFERENCES teams(id),
  points INTEGER DEFAULT 0, rebounds INTEGER DEFAULT 0,
  assists INTEGER DEFAULT 0, steals INTEGER DEFAULT 0,
  blocks INTEGER DEFAULT 0, minutes INTEGER DEFAULT 0
);

CREATE TABLE IF NOT EXISTS standings (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  league_id INTEGER NOT NULL REFERENCES leagues(id),
  season TEXT,
  team_id INTEGER NOT NULL REFERENCES teams(id),
  wins INTEGER DEFAULT 0, losses INTEGER DEFAULT 0,
  win_pct REAL DEFAULT 0,
  conference TEXT,                    -- 西部/东部
  rank INTEGER
);

CREATE TABLE IF NOT EXISTS news (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  sport_id INTEGER NOT NULL REFERENCES sports(id),
  league_id INTEGER REFERENCES leagues(id),
  team_id INTEGER REFERENCES teams(id),
  title TEXT NOT NULL,
  content TEXT NOT NULL,
  author TEXT,
  source TEXT,
  publish_time TEXT,
  tags TEXT,
  kind TEXT DEFAULT 'news',           -- news / wiki（百科词条）
  created_at TEXT DEFAULT (datetime('now','localtime'))
);

CREATE TABLE IF NOT EXISTS persons (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  sport_id INTEGER NOT NULL REFERENCES sports(id),
  league_id INTEGER REFERENCES leagues(id),
  team_id INTEGER REFERENCES teams(id),
  name TEXT NOT NULL,
  name_en TEXT,
  role TEXT,                          -- coach/agent/commentator/host/gm/legend...
  role_cn TEXT,                       -- 教练/经纪人/评论员/主持人/总经理...
  title TEXT,
  bio TEXT,
  achievements TEXT,
  created_at TEXT DEFAULT (datetime('now','localtime'))
);

CREATE INDEX IF NOT EXISTS idx_players_team ON players(team_id);
CREATE INDEX IF NOT EXISTS idx_players_name ON players(name);
CREATE INDEX IF NOT EXISTS idx_games_time ON games(game_time);
CREATE INDEX IF NOT EXISTS idx_games_team ON games(home_team_id);
CREATE INDEX IF NOT EXISTS idx_news_time ON news(publish_time);
CREATE INDEX IF NOT EXISTS idx_persons_role ON persons(role);
"""

_lock = threading.Lock()


def get_conn():
    conn = sqlite3.connect(DB_PATH, timeout=30)
    conn.row_factory = sqlite3.Row
    conn.execute("PRAGMA journal_mode=WAL")
    conn.execute("PRAGMA foreign_keys=ON")
    return conn


def init_db():
    with _lock:
        conn = get_conn()
        try:
            conn.executescript(_SCHEMA)
            conn.commit()
        finally:
            conn.close()


def query(sql, args=()):
    conn = get_conn()
    try:
        cur = conn.execute(sql, args)
        return [dict(r) for r in cur.fetchall()]
    finally:
        conn.close()


def query_one(sql, args=()):
    rows = query(sql, args)
    return rows[0] if rows else None


def execute(sql, args=()):
    conn = get_conn()
    try:
        cur = conn.execute(sql, args)
        conn.commit()
        return cur.lastrowid
    finally:
        conn.close()


def executemany(sql, rows):
    conn = get_conn()
    try:
        conn.executemany(sql, rows)
        conn.commit()
    finally:
        conn.close()


def table_count(table):
    return query_one(f"SELECT COUNT(*) AS c FROM {table}")["c"]


def fuzzy(expr):  # SQL LIKE 模糊匹配（转义 % _）
    return expr.replace("\\", "\\\\").replace("%", "\\%").replace("_", "\\_")