#!/usr/bin/env python3
"""
GPS記録データマイグレーション (既存データ保護版)
gifurogeからrogdbへ12,665件のGPSチェックイン記録を移行
既存のアプリケーションデータ(188エントリ、226チーム、388メンバー)は保護
"""

import os
import sys
import psycopg2
from datetime import datetime, timezone
from typing import Optional, Dict, List, Tuple
import pytz

# 設定
GIFUROGE_DB = {
    'host': 'postgres-db',
    'database': 'gifuroge',
    'user': 'admin',
    'password': 'admin123456',
    'port': 5432
}

ROGDB_DB = {
    'host': 'postgres-db',
    'database': 'rogdb',
    'user': 'admin',
    'password': 'admin123456',
    'port': 5432
}

def convert_utc_to_jst(utc_time):
    """UTC時刻をJST時刻に変換"""
    if utc_time is None:
        return None
    
    if isinstance(utc_time, str):
        utc_time = datetime.fromisoformat(utc_time.replace('Z', '+00:00'))
    
    if utc_time.tzinfo is None:
        utc_time = utc_time.replace(tzinfo=timezone.utc)
    
    jst = pytz.timezone('Asia/Tokyo')
    return utc_time.astimezone(jst)

def get_event_date(event_name: str) -> Optional[datetime]:
    """イベント名から開催日を推定"""
    event_dates = {
        '岐阜県ロゲイニング大会': datetime(2024, 11, 23),
        '高山市ロゲイニング大会': datetime(2024, 11, 23),
        'ロゲイニング大会2024': datetime(2024, 11, 23),
        'default': datetime(2024, 11, 23)
    }
    
    for key, date in event_dates.items():
        if key in event_name:
            return date
    
    return event_dates['default']

def parse_goal_time(goal_time_str: str, event_date_str: str) -> Optional[datetime]:
    """goal_time文字列を解析してdatetimeオブジェクトに変換"""
    try:
        if ':' in goal_time_str:
            time_parts = goal_time_str.split(':')
            hour = int(time_parts[0])
            minute = int(time_parts[1])
            
            event_date = datetime.strptime(event_date_str, "%Y-%m-%d")
            goal_datetime = event_date.replace(hour=hour, minute=minute)
            
            jst = pytz.timezone('Asia/Tokyo')
            goal_datetime_jst = jst.localize(goal_datetime)
            
            return goal_datetime_jst
    except Exception as e:
        print(f"goal_time解析エラー: {goal_time_str} - {e}")
    
    return None

def check_database_connectivity():
    """データベース接続確認"""
    print("=== データベース接続確認 ===")
    
    try:
        # gifuroge DB接続確認
        source_conn = psycopg2.connect(**GIFUROGE_DB)
        source_cursor = source_conn.cursor()
        source_cursor.execute("SELECT COUNT(*) FROM gps_information")
        source_count = source_cursor.fetchone()[0]
        print(f"✅ gifuroge DB接続成功: gps_information {source_count}件")
        
        # テーブル構造確認
        source_cursor.execute("""
            SELECT column_name, data_type 
            FROM information_schema.columns 
            WHERE table_name = 'gps_information' 
            ORDER BY ordinal_position
        """)
        columns = source_cursor.fetchall()
        print("📋 gps_informationテーブル構造:")
        for col_name, col_type in columns:
            print(f"   {col_name}: {col_type}")
        
        source_conn.close()
        
        # rogdb DB接続確認
        target_conn = psycopg2.connect(**ROGDB_DB)
        target_cursor = target_conn.cursor()
        target_cursor.execute("SELECT COUNT(*) FROM rog_gpscheckin")
        target_count = target_cursor.fetchone()[0]
        print(f"✅ rogdb DB接続成功: rog_gpscheckin {target_count}件")
        
        # 移行先テーブル構造確認
        target_cursor.execute("""
            SELECT column_name, data_type 
            FROM information_schema.columns 
            WHERE table_name = 'rog_gpscheckin' 
            ORDER BY ordinal_position
        """)
        target_columns = target_cursor.fetchall()
        print("📋 rog_gpscheckinテーブル構造:")
        for col_name, col_type in target_columns:
            print(f"   {col_name}: {col_type}")
        
        target_conn.close()
        
        return True
        
    except Exception as e:
        print(f"❌ データベース接続エラー: {e}")
        return False

def verify_location2025_compatibility(target_cursor):
    """rog_location2025テーブルとの互換性確認"""
    print("\n=== Location2025互換性確認 ===")
    
    try:
        # テーブル存在確認
        target_cursor.execute("""
            SELECT EXISTS (
                SELECT FROM information_schema.tables 
                WHERE table_schema = 'public' 
                AND table_name = 'rog_location2025'
            )
        """)
        table_exists = target_cursor.fetchone()[0]
        
        if not table_exists:
            print("⚠️  rog_location2025テーブルが存在しません")
            return True  # テーブルが存在しない場合は互換性チェックをスキップ
        
        # カラム構造を動的に確認
        target_cursor.execute("""
            SELECT column_name FROM information_schema.columns 
            WHERE table_name = 'rog_location2025' 
            AND table_schema = 'public'
        """)
        columns = [row[0] for row in target_cursor.fetchall()]
        print(f"検出されたカラム: {columns}")
        
        # event_codeまたはevent_nameカラムの存在確認
        event_column = None
        if 'event_code' in columns:
            event_column = 'event_code'
        elif 'event_name' in columns:
            event_column = 'event_name'
        
        if event_column:
            # 動的にクエリを構築
            query = f"""
                SELECT e.{event_column}, COUNT(l.id) as location_count
                FROM rog_entry e
                LEFT JOIN rog_location2025 l ON e.id = l.entry_id  
                GROUP BY e.{event_column}
                HAVING COUNT(l.id) > 0
            """
            target_cursor.execute(query)
            location_data = target_cursor.fetchall()
            
            print(f"既存のLocation2025データ:")
            for event_id, count in location_data:
                print(f"  {event_column} {event_id}: {count}件")
            
            print("✅ Location2025互換性確認完了")
            return True
        else:
            print("⚠️  event_codeもevent_nameも見つかりません")
            return True
            
    except Exception as e:
        print(f"❌ Location2025互換性確認エラー: {e}")
        # トランザクションエラーの場合はロールバック
        try:
            target_cursor.connection.rollback()
        except:
            pass
        return False

def backup_existing_data(target_cursor):
    """既存データのバックアップ状況を確認"""
    print("\n=== 既存データ保護確認 ===")
    
    try:
        # 既存データ数を確認
        target_cursor.execute("SELECT COUNT(*) FROM rog_entry")
        entry_count = target_cursor.fetchone()[0]
        
        target_cursor.execute("SELECT COUNT(*) FROM rog_team")
        team_count = target_cursor.fetchone()[0]
        
        target_cursor.execute("SELECT COUNT(*) FROM rog_member")
        member_count = target_cursor.fetchone()[0]
        
        target_cursor.execute("SELECT COUNT(*) FROM rog_gpscheckin")
        checkin_count = target_cursor.fetchone()[0]
        
        # Location2025データ数も確認
        try:
            target_cursor.execute("SELECT COUNT(*) FROM rog_location2025")
            location2025_count = target_cursor.fetchone()[0]
            print(f"  rog_location2025: {location2025_count} 件 (保護対象)")
        except Exception as e:
            print(f"  rog_location2025: 確認エラー ({e})")
            location2025_count = 0
        
        print(f"既存データ保護状況:")
        print(f"  rog_entry: {entry_count} 件 (保護対象)")
        print(f"  rog_team: {team_count} 件 (保護対象)")
        print(f"  rog_member: {member_count} 件 (保護対象)")
        print(f"  rog_gpscheckin: {checkin_count} 件 (移行対象)")
        
        if entry_count > 0 or team_count > 0 or member_count > 0:
            print("✅ 既存のcore application dataが検出されました。これらは保護されます。")
            return True
        else:
            print("⚠️  既存のcore application dataが見つかりません。")
            return False
            
    except Exception as e:
        print(f"❌ 既存データ確認エラー: {e}")
        # トランザクションエラーの場合はロールバック
        try:
            target_cursor.connection.rollback()
        except:
            pass
        return False

def migrate_gps_data(source_cursor, target_cursor):
    """GPS記録データのみを移行(写真記録データは除外)"""
    print("\n=== GPS記録データの移行 ===")
    
    try:
        # 移行元テーブルの構造を確認
        source_cursor.execute("""
            SELECT column_name 
            FROM information_schema.columns 
            WHERE table_name = 'gps_information' 
            ORDER BY ordinal_position
        """)
        source_columns = [row[0] for row in source_cursor.fetchall()]
        print(f"📋 移行元カラム: {source_columns}")
        
        # 移行先テーブルの構造を確認
        target_cursor.execute("""
            SELECT column_name 
            FROM information_schema.columns 
            WHERE table_name = 'rog_gpscheckin' 
            ORDER BY ordinal_position
        """)
        target_columns = [row[0] for row in target_cursor.fetchall()]
        print(f"📋 移行先カラム: {target_columns}")
        
        # 必要なカラムのマッピングを確認
        column_mapping = {
            'serial_number': 'serial_number',
            'team_name': 'team_name' if 'team_name' in source_columns else None,
            'zekken_number': 'zekken_number' if 'zekken_number' in source_columns else None,
            'event_code': 'event_code' if 'event_code' in source_columns else None,
            'cp_number': 'cp_number',
            'record_time': 'create_at' if 'create_at' in source_columns else 'record_time',
            'goal_time': 'goal_time',
            'late_point': 'late_point',
            'buy_flag': 'buy_flag',
            'image_address': 'image_address',
            'minus_photo_flag': 'minus_photo_flag',
            'create_user': 'create_user',
            'update_user': 'update_user',
            'colabo_company_memo': 'colabo_company_memo'
        }
        
        # 実際に存在するカラムでクエリを構築
        select_columns = []
        for key, column in column_mapping.items():
            if column and column in source_columns:
                select_columns.append(f"{column} as {key}")
            else:
                select_columns.append(f"NULL as {key}")
        
        query = f"""
            SELECT {', '.join(select_columns)}
            FROM gps_information 
            WHERE serial_number < 20000  -- GPS専用データのみ
            ORDER BY serial_number
        """
        
        print(f"📋 実行クエリ: {query}")
        source_cursor.execute(query)
        
        gps_records = source_cursor.fetchall()
        print(f"移行対象GPS記録数: {len(gps_records)}件")
        
        migrated_count = 0
        error_count = 0
        
        for record in gps_records:
            try:
                # レコードを解析（NULLの場合はデフォルト値を設定）
                record_data = {}
                for i, key in enumerate(column_mapping.keys()):
                    record_data[key] = record[i] if i < len(record) else None
                
                serial_number = record_data['serial_number']
                team_name = record_data['team_name'] or f"Team_{record_data['zekken_number'] or serial_number}"
                zekken_number = record_data['zekken_number'] or serial_number
                event_code = record_data['event_code'] or 'unknown'
                cp_number = record_data['cp_number']
                record_time = record_data['record_time']
                goal_time = record_data['goal_time']
                late_point = record_data['late_point']
                buy_flag = record_data['buy_flag']
                image_address = record_data['image_address']
                minus_photo_flag = record_data['minus_photo_flag']
                create_user = record_data['create_user']
                update_user = record_data['update_user']
                colabo_company_memo = record_data['colabo_company_memo']
                
                # UTC時刻をJST時刻に変換
                record_time_jst = convert_utc_to_jst(record_time)
                goal_time_utc = None
                
                if goal_time:
                    # goal_timeをUTCに変換
                    if isinstance(goal_time, str):
                        # イベント名からイベント日付を取得
                        event_name = colabo_company_memo or "不明"
                        event_date = get_event_date(event_name)
                        if event_date:
                            goal_time_utc = parse_goal_time(goal_time, event_date.strftime("%Y-%m-%d"))
                    elif isinstance(goal_time, datetime):
                        goal_time_utc = convert_utc_to_jst(goal_time)
                
                # 移行先テーブルに合わせてINSERT文を動的構築
                insert_columns = ['serial_number', 'cp_number', 'record_time', 'goal_time',
                                'late_point', 'buy_flag', 'image_address', 'minus_photo_flag',
                                'create_user', 'update_user', 'comment']
                insert_values = [serial_number, cp_number, record_time_jst, goal_time_utc,
                               late_point, buy_flag, image_address, minus_photo_flag,
                               create_user, update_user, f'migrated_from_gifuroge_team_{team_name}_zekken_{zekken_number}_event_{event_code}']
                
                # 移行先テーブルに存在するカラムのみを使用
                final_columns = []
                final_values = []
                for i, col in enumerate(insert_columns):
                    if col in target_columns:
                        final_columns.append(col)
                        final_values.append(insert_values[i])
                
                placeholders = ', '.join(['%s'] * len(final_columns))
                columns_str = ', '.join(final_columns)
                
                target_cursor.execute(f"""
                    INSERT INTO rog_gpscheckin ({columns_str})
                    VALUES ({placeholders})
                """, final_values)
                
                migrated_count += 1
                
                if migrated_count % 1000 == 0:
                    print(f"  移行進捗: {migrated_count}/{len(gps_records)} 件")
                    target_cursor.connection.commit()
                    
            except Exception as e:
                error_count += 1
                print(f"  レコード移行エラー(serial_number={serial_number}): {e}")
                # トランザクションエラーの場合はロールバックして続行
                try:
                    target_cursor.connection.rollback()
                except:
                    pass
                if error_count > 100:  # エラー上限
                    print("❌ エラー数が上限を超えました。移行を中止します。")
                    raise
        
        target_cursor.connection.commit()
        print(f"✅ GPS記録移行完了: {migrated_count}件成功, {error_count}件エラー")
        return migrated_count
        
    except Exception as e:
        print(f"❌ GPS記録移行エラー: {e}")
        target_cursor.connection.rollback()
        raise

def main():
    """メイン移行処理(既存データ保護版)"""
    print("=" * 60)
    print("GPS記録データ移行スクリプト (既存データ保護版)")
    print("=" * 60)
    print("移行対象: gifuroge.gps_information → rogdb.rog_gpscheckin")
    print("既存データ保護: rog_entry, rog_team, rog_member, rog_location2025")
    print("=" * 60)
    
    try:
        # 1. データベース接続確認
        if not check_database_connectivity():
            return False
        
        # 2. 実際の移行処理
        source_conn = psycopg2.connect(**GIFUROGE_DB)
        target_conn = psycopg2.connect(**ROGDB_DB)
        
        source_cursor = source_conn.cursor()
        target_cursor = target_conn.cursor()
        
        # 3. 既存データ確認
        has_existing_data = backup_existing_data(target_cursor)
        
        # 4. Location2025互換性確認
        is_compatible = verify_location2025_compatibility(target_cursor)
        if not is_compatible:
            print("❌ Location2025互換性に問題があります。")
            return False
        
        # 5. 安全確認
        if has_existing_data:
            print("\n⚠️  既存のアプリケーションデータが検出されました。")
            print("この移行操作は既存データを保護しながらGPS記録のみを移行します。")
            confirm = input("続行しますか? (yes/no): ")
            if confirm.lower() != 'yes':
                print("移行を中止しました。")
                return False
        
        # 6. GPS記録データ移行
        migrated_count = migrate_gps_data(source_cursor, target_cursor)
        
        # 7. 完了確認
        print("\n" + "=" * 60)
        print("移行完了サマリー")
        print("=" * 60)
        print(f"移行されたGPS記録: {migrated_count}件")
        print("保護された既存データ: rog_entry, rog_team, rog_member, rog_location2025")
        print("✅ データ移行が完了しました！")
        
        return True
        
    except Exception as e:
        print(f"\n❌ 移行処理エラー: {e}")
        return False
        
    finally:
        try:
            source_conn.close()
            target_conn.close()
        except:
            pass

if __name__ == "__main__":
    success = main()
    sys.exit(0 if success else 1)