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import pandas as pd
from typing import Dict, List, Any, Tuple
from mappers import mapping_utils


def load_and_preprocess_data(input_file: str, config: Dict[str, Any], mapping_dict: Dict[str, Dict[str, str]]) -> Tuple[pd.DataFrame, pd.DataFrame]:
    """
    ๋ฐ์ดํ„ฐ ๋กœ๋“œ ๋ฐ ์ „์ฒ˜๋ฆฌ
    
    Args:
        input_file: ์ž…๋ ฅ ํŒŒ์ผ ๊ฒฝ๋กœ
        config: ๋ Œํƒˆ์‚ฌ ์„ค์ • ์ •๋ณด
        mapping_dict: ๋งคํ•‘ ๋”•์…”๋„ˆ๋ฆฌ
        
    Returns:
        ์ „์ฒ˜๋ฆฌ๋œ ๋ฐ์ดํ„ฐํ”„๋ ˆ์ž„, ํ•„ํ„ฐ๋ง๋œ ๋ฐ์ดํ„ฐํ”„๋ ˆ์ž„
    """
    # CSV ํŒŒ์ผ ๋กœ๋“œ - ๋‹ค์–‘ํ•œ ์ธ์ฝ”๋”ฉ ์‹œ๋„
    print(f"'{input_file}' ํŒŒ์ผ ๋กœ๋”ฉ ์ค‘...")
    try:
        rental_df = pd.read_csv(input_file, encoding='utf-8')
    except UnicodeDecodeError:
        try:
            # UTF-8 ์‹คํŒจ ์‹œ CP949 ์‹œ๋„
            rental_df = pd.read_csv(input_file, encoding='cp949')
            print("CP949 ์ธ์ฝ”๋”ฉ์œผ๋กœ ํŒŒ์ผ ๋กœ๋“œ ์„ฑ๊ณต")
        except UnicodeDecodeError:
            try:
                # EUC-KR ์‹œ๋„
                rental_df = pd.read_csv(input_file, encoding='euc-kr') 
                print("EUC-KR ์ธ์ฝ”๋”ฉ์œผ๋กœ ํŒŒ์ผ ๋กœ๋“œ ์„ฑ๊ณต")
            except Exception as e:
                print(f"ํŒŒ์ผ ๋กœ๋“œ ์‹คํŒจ: {e}")
                raise
    
    print(f"๋กœ๋”ฉ ์™„๋ฃŒ: {len(rental_df)}๊ฐœ ํ–‰ ๋ฐœ๊ฒฌ")
    
    # ์ปฌ๋Ÿผ๋ช… ์–‘์ชฝ ๊ณต๋ฐฑ ์ œ๊ฑฐ (๋” ์—„๊ฒฉํ•œ ์ฒ˜๋ฆฌ)
    original_columns = rental_df.columns.tolist()
    print("์›๋ณธ ์ปฌ๋Ÿผ๋ช…:")
    for col in original_columns:
        print(f"- '{col}'")

    # ์ปฌ๋Ÿผ๋ช…์—์„œ ๊ณต๋ฐฑ ์ œ๊ฑฐ ๋ฐ ์ฒ˜๋ฆฌ
    rental_df.columns = [col.strip() for col in rental_df.columns]

    # ์ฒ˜๋ฆฌ๋œ ์ปฌ๋Ÿผ๋ช… ์ถœ๋ ฅ
    processed_columns = rental_df.columns.tolist()
    print("์ฒ˜๋ฆฌ ํ›„ ์ปฌ๋Ÿผ๋ช…:")
    for i, col in enumerate(processed_columns):
        orig = original_columns[i] if i < len(original_columns) else "?"
        print(f"- '{orig}' -> '{col}'")

    # ์ปฌ๋Ÿผ๋ช… ์ค‘๋ณต ์ฒดํฌ ๋ฐ ์ฒ˜๋ฆฌ
    if len(set(rental_df.columns)) != len(rental_df.columns):
        print("๊ฒฝ๊ณ : ๊ณต๋ฐฑ ์ œ๊ฑฐ ํ›„ ์ค‘๋ณต๋œ ์ปฌ๋Ÿผ๋ช…์ด ์žˆ์Šต๋‹ˆ๋‹ค.")
        duplicate_count = {}
        new_columns = []
        
        for col in rental_df.columns:
            if col in duplicate_count:
                duplicate_count[col] += 1
                new_col = f"{col}_{duplicate_count[col]}"
                new_columns.append(new_col)
                print(f"  ์ค‘๋ณต ์ปฌ๋Ÿผ ์ฒ˜๋ฆฌ: '{col}' -> '{new_col}'")
            else:
                duplicate_count[col] = 0
                new_columns.append(col)
        
        rental_df.columns = new_columns
    
    # ํ•„์š”ํ•œ ํ•„๋“œ ํ™•์ธ ๋ฐ ์กฐ์ •
    # ํ•„์š”ํ•œ ์ปฌ๋Ÿผ์ด ์žˆ๋Š”์ง€ ํ™•์ธ
    column_exists = {}
    required_columns = ["๋ชจ๋ธ๋ช…", "์˜์—…๋ถ„๋ฅ˜", "๊ด€๋ฆฌ๋ถ€์„œ", "๊ฑฐ๋ž˜์ฒ˜๋ช…", "๊ด€๋ฆฌ์ง€์ "]
    
    for col in required_columns:
        if col in rental_df.columns:
            column_exists[col] = True
        else:
            column_exists[col] = False
            print(f"๊ฒฝ๊ณ : '{col}' ์ปฌ๋Ÿผ์ด ํŒŒ์ผ์— ์—†์Šต๋‹ˆ๋‹ค.")
    
    # ๊ธˆ์•ก ํ•„๋“œ ์ฐพ๊ธฐ - ์›”๋ณ„ ์ž๋™ ์ธ์‹ ํŒจํ„ด
    amount_field = None
    
    # 1. ๋จผ์ € config์— ์„ค์ •๋œ ํ•„๋“œ ์‹œ๋„ (์•ž๋’ค ๊ณต๋ฐฑ ์ œ๊ฑฐ ํ›„ ๋น„๊ต)
    clean_amount_field = config['amount_field'].strip()
    for col in rental_df.columns:
        if col.strip() == clean_amount_field:
            amount_field = col
            print(f"๊ธˆ์•ก ํ•„๋“œ๋กœ '{amount_field}'๋ฅผ ์„ค์ •๊ฐ’์—์„œ ์ฐพ์•˜์Šต๋‹ˆ๋‹ค.")
            break
    
    if not amount_field:
        # 2. 'N์›”๋ Œํƒˆ๋ฃŒ' ํŒจํ„ด ์ฐพ๊ธฐ - ๊ณต๋ฐฑ ๊ณ ๋ ค
        import re
        month_pattern = re.compile(r'^\s*(?:[0-9]{1,2})์›”๋ Œํƒˆ๋ฃŒ\s*$')
        
        for col in rental_df.columns:
            if month_pattern.match(col):
                amount_field = col
                print(f"๊ธˆ์•ก ํ•„๋“œ๋กœ '{amount_field}'๋ฅผ ์ž๋™ ์ธ์‹ํ–ˆ์Šต๋‹ˆ๋‹ค.")
                break
                
        # 3. ๋ Œํƒˆ๋ฃŒ ํฌํ•จ ํ•„๋“œ ์ฐพ๊ธฐ
        if not amount_field:
            for col in rental_df.columns:
                if '๋ Œํƒˆ๋ฃŒ' in col:
                    amount_field = col
                    print(f"๊ธˆ์•ก ํ•„๋“œ๋กœ '{amount_field}'๋ฅผ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค.")
                    break
    
    if not amount_field:
        # 4. ์ปฌ๋Ÿผ๋ช…์— '์›'์ด๋‚˜ '๏ฟฆ' ๋˜๋Š” 'โ‚ฉ'๊ฐ€ ํฌํ•จ๋œ ๊ฒƒ์„ amount_field๋กœ ์‚ฌ์šฉ
        for col in rental_df.columns:
            if '์›' in col or '๏ฟฆ' in col or 'โ‚ฉ' in col:
                amount_field = col
                print(f"๊ธˆ์•ก ํ•„๋“œ๋กœ '{amount_field}'๋ฅผ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค.")
                break
    
    # ๊ธˆ์•ก ํ•„๋“œ๋ฅผ ์ฐพ์„ ์ˆ˜ ์—†์œผ๋ฉด ์˜ค๋ฅ˜ ๋ฐœ์ƒ
    if not amount_field:
        raise ValueError("๊ธˆ์•ก ํ•„๋“œ๋ฅผ ์ฐพ์„ ์ˆ˜ ์—†์Šต๋‹ˆ๋‹ค. ํŒŒ์ผ ํ˜•์‹์„ ํ™•์ธํ•ด์ฃผ์„ธ์š”.")
    
    # ๊ธˆ์•ก ํ•„๋“œ ํ™•์ธ ์ถœ๋ ฅ
    print(f"์‚ฌ์šฉํ•  ๊ธˆ์•ก ํ•„๋“œ: '{amount_field}'")
    print(f"๊ธˆ์•ก ํ•„๋“œ ์ƒ˜ํ”Œ ๊ฐ’: {rental_df[amount_field].head().tolist()}")
    
    # ํŒ€ ํ•„๋“œ ์ฐพ๊ธฐ - ์›”๋ณ„ ์ž๋™ ์ธ์‹ ํŒจํ„ด
    team_fields = []
    
    # 1. ๋จผ์ € config์— ์„ค์ •๋œ ํ•„๋“œ ์‹œ๋„
    configured_team_fields = config.get('team_fields', [])
    if isinstance(configured_team_fields, str):
        configured_team_fields = [configured_team_fields]
    
    for field in configured_team_fields:
        clean_field = field.strip()
        for col in rental_df.columns:
            if col.strip() == clean_field:
                team_fields.append(col)
                print(f"ํŒ€ ํ•„๋“œ๋กœ '{col}'๋ฅผ ์„ค์ •๊ฐ’์—์„œ ์ฐพ์•˜์Šต๋‹ˆ๋‹ค.")
                break
    
    if not team_fields:
        # 2. '[0-9]์›” ๋ณ€๊ฒฝPJT' ํŒจํ„ด๋งŒ ์ฐพ๊ธฐ - ๊ณต๋ฐฑ ํ—ˆ์šฉ
        import re
        # ๊ณต๋ฐฑ ํ—ˆ์šฉํ•˜๊ณ  '๋ณ€๊ฒฝPJT'๋งŒ ์ฐพ๋Š” ํŒจํ„ด
        month_pjt_pattern = re.compile(r'^\s*(?:[0-9]{1,2})์›”\s*๋ณ€๊ฒฝPJT\s*$')
        
        for col in rental_df.columns:
            if month_pjt_pattern.match(col):
                team_fields.append(col)
                print(f"ํŒ€ ํ•„๋“œ๋กœ '{col}'๋ฅผ ์ž๋™ ์ธ์‹ํ–ˆ์Šต๋‹ˆ๋‹ค (๋ณ€๊ฒฝPJT ํŒจํ„ด).")
    
    # ํŒ€ ํ•„๋“œ๋ฅผ ์ฐพ์„ ์ˆ˜ ์—†์Œ - ์˜ค๋ฅ˜ ๋ฐœ์ƒ
    if not team_fields:
        raise ValueError("ํŒ€ ์ •๋ณด ํ•„๋“œ๋ฅผ ์ฐพ์„ ์ˆ˜ ์—†์Šต๋‹ˆ๋‹ค. ํŒŒ์ผ ํ˜•์‹์„ ํ™•์ธํ•ด์ฃผ์„ธ์š”.")
    
    # ์‚ฌ์šฉ ๊ฐ€๋Šฅํ•œ ์ปฌ๋Ÿผ๋งŒ ์„ ํƒ
    available_columns = []
    for col in required_columns:
        if column_exists.get(col, False):
            available_columns.append(col)
    
    if amount_field:
        available_columns.append(amount_field)
    
    available_columns.extend(team_fields)
    
    # ์ค‘๋ณต ์ œ๊ฑฐ
    available_columns = list(dict.fromkeys(available_columns))
    
    print(f"์‚ฌ์šฉํ•  ์ปฌ๋Ÿผ: {available_columns}")
    
    # ํ•„์š”ํ•œ ํ•„๋“œ๋งŒ ์„ ํƒ (์กด์žฌํ•˜๋Š” ์ปฌ๋Ÿผ๋งŒ)
    df = rental_df[available_columns].copy()
    
    # ๊ธˆ์•ก ํ•„๋“œ ์ฒ˜๋ฆฌ - ๊ฐ„๋‹จํ•œ ๋ฐฉ๋ฒ•์œผ๋กœ ์ˆซ์ž๋งŒ ์ถ”์ถœ
    print(f"๊ธˆ์•ก ํ•„๋“œ '{amount_field}' ๋ฐ์ดํ„ฐ ์ฒ˜๋ฆฌ ์ค‘...")
    
    # ์ˆซ์ž๋กœ ๋ณ€ํ™˜ ๊ฐ€๋Šฅํ•œ ๊ฐ’๋งŒ ์œ ํšจํ•œ ๊ฒƒ์œผ๋กœ ๊ฐ„์ฃผ (ํ•œ ์ค„๋กœ ์ฒ˜๋ฆฌ)
    valid_amount_mask = pd.to_numeric(df[amount_field], errors='coerce').notna()
    
    # ์œ ํšจํ•˜์ง€ ์•Š์€ ํ–‰ ์ˆ˜ ์ถœ๋ ฅ
    invalid_rows = (~valid_amount_mask).sum()
    if invalid_rows > 0:
        print(f"๊ธˆ์•ก์ด ์—†๊ฑฐ๋‚˜ ์ˆซ์ž๊ฐ€ ์•„๋‹Œ ํ–‰(๋ฐ˜๋‚ฉ ํ•ญ๋ชฉ) {invalid_rows}๊ฐœ๋ฅผ ์ œ์™ธํ•ฉ๋‹ˆ๋‹ค.")
    
    # ์œ ํšจํ•œ ํ–‰๋งŒ ์„ ํƒ
    df = df[valid_amount_mask].copy()
    
    # ๊ธˆ์•ก ๋ณ€ํ™˜ - ๋‹จ์ˆœํ™”๋œ ๋ฐฉ๋ฒ•
    df["๊ธˆ์•ก"] = pd.to_numeric(df[amount_field], errors='coerce')
    df["๊ธˆ์•ก"] = df["๊ธˆ์•ก"].astype(int)
    print(f"๊ธˆ์•ก ๋ณ€ํ™˜ ์„ฑ๊ณต: ์ƒ˜ํ”Œ ๊ฐ’ = {df['๊ธˆ์•ก'].head().tolist()}")
    
    # ํŒ€๋ช… ์ฒ˜๋ฆฌ (์šฐ์„ ์ˆœ์œ„์— ๋”ฐ๋ผ)
    if team_fields:
        df["์›๋ณธํŒ€๋ช…"] = df[team_fields[0]].copy()
        for field in team_fields[1:]:
            df["์›๋ณธํŒ€๋ช…"] = df["์›๋ณธํŒ€๋ช…"].combine_first(df[field])
    
    # ๋งคํ•‘ ์ ์šฉ
    df["๋งคํ•‘์ •๋ณด"] = df["์›๋ณธํŒ€๋ช…"].apply(lambda x: mapping_utils.apply_mapping(x, mapping_dict))
    
    # ๋งคํ•‘ ์ •๋ณด์—์„œ ํ•„๋“œ ์ถ”์ถœ
    df["ํŒ€๋ช…"] = df["๋งคํ•‘์ •๋ณด"].apply(lambda x: x["present"])
    df["CD_ACCT"] = df["๋งคํ•‘์ •๋ณด"].apply(lambda x: x["CD_ACCT"])
    
    # CD_PJT๋ฅผ ์ •์ˆ˜ํ˜•์œผ๋กœ ๋ณ€ํ™˜ํ•˜๋Š” ๋ถ€๋ถ„
    df["CD_PJT"] = df["๋งคํ•‘์ •๋ณด"].apply(lambda x: x["CD_PJT"])
    # ๋ฌธ์ž์—ด์ด๋‚˜ NaN ๊ฐ’ ์ฒ˜๋ฆฌ ํ›„ ์ •์ˆ˜ํ˜•์œผ๋กœ ๋ณ€ํ™˜
    df["CD_PJT"] = pd.to_numeric(df["CD_PJT"], errors='coerce').fillna(1000).astype(int)
    
    # ์ ์š” ์ƒ์„ฑ
    df["์ ์š”"] = f"{config['note_prefix']}(" + df["ํŒ€๋ช…"] + ")"
    
    # MNG ์ฝ”๋“œ ์„ค์ •
    df["CD_MNG1"] = config['cost_center']  # ์ฝ”์ŠคํŠธ์„ผํ„ฐ
    df["CD_MNG3"] = config['partner_code']  # ๊ฑฐ๋ž˜์ฒ˜ ์ฝ”๋“œ
    
    # ๋งคํ•‘๋œ ํ•ญ๋ชฉ๋งŒ ์„ ํƒ (CD_ACCT์™€ CD_PJT๊ฐ€ ์žˆ๋Š” ํ•ญ๋ชฉ๋งŒ)
    df_filtered = df[(df["CD_ACCT"] != "") & (df["CD_PJT"] != "")].copy()
    
    # ๋งคํ•‘๋˜์ง€ ์•Š์€ ํŒ€๋ช… ์ •๋ณด ์ถœ๋ ฅ
    if len(df_filtered) < len(df):
        unmapped_teams = df[~df.index.isin(df_filtered.index)]["์›๋ณธํŒ€๋ช…"].unique()
        print(f"๋งคํ•‘๋˜์ง€ ์•Š์€ ํŒ€๋ช… {len(unmapped_teams)}๊ฐœ:")
        for team in unmapped_teams:
            print(f"- '{team}'")
        
        # ๋งคํ•‘๋˜์ง€ ์•Š์€ ํ•ญ๋ชฉ์ด ์žˆ์œผ๋ฉด ๊ฒฝ๊ณ  (์ „์ฒด ๋‹ค ๋งคํ•‘ ์•ˆ ๋˜๋Š” ๊ฒฝ์šฐ๋งŒ ์˜ค๋ฅ˜)
        if len(df_filtered) == 0:
            raise ValueError("๋ชจ๋“  ํŒ€๋ช…์ด ๋งคํ•‘๋˜์ง€ ์•Š์•˜์Šต๋‹ˆ๋‹ค. ๋งคํ•‘ ํŒŒ์ผ์„ ํ™•์ธํ•ด์ฃผ์„ธ์š”.")
    
    print(f"๋งคํ•‘๋œ ํ•ญ๋ชฉ: {len(df_filtered)}๊ฐœ / ์ „์ฒด {len(df)}๊ฐœ")
    
    return df, df_filtered


def summarize_data(df_filtered: pd.DataFrame, mapping_dict: Dict[str, Dict[str, str]]) -> Dict[str, Any]:
    """
    ๋ฐ์ดํ„ฐ ์š”์•ฝ ์ •๋ณด ์ƒ์„ฑ
    
    Args:
        df_filtered: ํ•„ํ„ฐ๋ง๋œ ๋ฐ์ดํ„ฐํ”„๋ ˆ์ž„
        mapping_dict: ๋งคํ•‘ ๋”•์…”๋„ˆ๋ฆฌ
        
    Returns:
        ๋ฐ์ดํ„ฐ ์š”์•ฝ ์ •๋ณด
    """
    total_amount = df_filtered["๊ธˆ์•ก"].sum()
    
    # ๋งคํ•‘ ๊ฒฐ๊ณผ ์š”์•ฝ
    mapping_summary = mapping_utils.get_mapping_summary(df_filtered, mapping_dict)
    
    # ๊ณ„์ • ์‚ฌ์šฉ ํ˜„ํ™ฉ
    account_counts = df_filtered['CD_ACCT'].value_counts().to_dict()
    
    return {
        'total_count': len(df_filtered),
        'total_amount': total_amount,
        'account_counts': account_counts,
        'mapping_summary': mapping_summary
    }