#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import sys
import io

sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8', errors='replace')
sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8', errors='replace')

import mysql.connector
from mysql.connector import Error
from openpyxl import Workbook
from openpyxl.styles import Font, PatternFill, Alignment, Border, Side
from datetime import datetime
import os
import glob
import json

# ======================================================
# CONFIGURATION
# ======================================================

DB_HOST = "192.168.1.76"
DB_PORT = 3306
DB_USER = "root"
DB_PASS = "Vlado9674+"
DB_NAME = "fio"

OUTPUT_DIR = r"u:\Dropbox\!!!Days\Downloads Z230"
ACCOUNTS_JSON = r"accounts.json"

TEXT_COLUMNS = ["cislo_uctu", "protiucet", "kod_banky", "ks", "vs", "ss"]

# ======================================================
# SQL VIEW COMPATIBILITY LAYER
# ======================================================

SELECT_LEGACY = """
SELECT
    transaction_date AS datum,
    amount AS objem,
    currency AS mena,
    cislo_uctu,
    protiucet,
    kod_banky,
    ks,
    vs,
    ss,
    zprava_pro_prijemce,
    komentar AS poznamka,
    id_operace,
    id_pokynu,
    nazev_banky,
    nazev_protiuctu,
    typ,
    upr_objem_mena AS upresneni_objem,
    NULL AS upresneni_mena,
    provedl AS zadal,
    api_bic,
    reference_platce,
    stazeno_kdy
FROM transactions
"""

# ======================================================
# REMOVE OLD EXPORT FILES
# ======================================================

def cleanup_old_exports():

    patterns = [
        os.path.join(OUTPUT_DIR, "*FIO*transaction*.xlsx"),
        os.path.join(OUTPUT_DIR, "*FIO*transactions*.xlsx"),
        os.path.join(OUTPUT_DIR, "*FIO_transactions*.xlsx"),
    ]

    for pattern in patterns:
        for file in glob.glob(pattern):
            try:
                os.remove(file)
                print(f"🗑 Deleted old export: {file}")
            except:
                pass

# ======================================================
# FORMAT SHEET
# ======================================================

def format_sheet(ws, rows, headers):

    for col_idx in range(1, len(headers) + 1):
        cell = ws.cell(row=1, column=col_idx)
        cell.font = Font(bold=True)
        cell.fill = PatternFill(start_color="FFFF00", fill_type="solid")

    for row in rows:
        excel_row = []
        for h in headers:
            val = row[h]
            if h in TEXT_COLUMNS and val is not None:
                excel_row.append(f'="{val}"')
            else:
                excel_row.append(val)

        ws.append(excel_row)

    fill_red = PatternFill(start_color="FFFFDDDD", fill_type="solid")
    fill_green = PatternFill(start_color="FFEEFFEE", fill_type="solid")

    objem_col_index = headers.index("objem") + 1

    for row_idx in range(2, len(rows) + 2):
        try:
            value = float(ws.cell(row=row_idx, column=objem_col_index).value)
        except:
            value = 0

        fill = fill_red if value < 0 else fill_green

        for col_idx in range(1, len(headers) + 1):
            ws.cell(row=row_idx, column=col_idx).fill = fill

    fixed_widths = [
        10.29, 10.29, 10.71, 13.29, 13.29, 7.29, 15.14, 12.29,
        34.43, 49.29, 13.57, 11.29, 11.29, 8, 30.57, 28.29,
        11, 28.29, 15.29, 14.29, 20
    ]

    for i, width in enumerate(fixed_widths, start=1):
        ws.column_dimensions[chr(64 + i)].width = width

    thin = Side(border_style="thin", color="000000")
    border = Border(left=thin, right=thin, top=thin, bottom=thin)
    align_center = Alignment(horizontal="center")

    total_rows = len(rows) + 1
    total_cols = len(headers)

    for row_idx in range(1, total_rows + 1):
        for col_idx in range(1, total_cols + 1):
            cell = ws.cell(row=row_idx, column=col_idx)
            cell.border = border

            align_left = Alignment(horizontal="left")

            if row_idx > 1 and col_idx == 10:
                cell.alignment = align_left
            elif col_idx <= 9:
                cell.alignment = align_center

    ws.freeze_panes = "A2"
    ws.auto_filter.ref = ws.dimensions

# ======================================================
# EXPORT
# ======================================================

def export_fio():

    print("Connecting to MySQL...")

    try:
        conn = mysql.connector.connect(
            host=DB_HOST,
            port=DB_PORT,
            user=DB_USER,
            password=DB_PASS,
            database=DB_NAME
        )
    except Error as e:
        print("❌ Failed to connect:", e)
        return

    cur = conn.cursor(dictionary=True)

    with open(ACCOUNTS_JSON, "r", encoding="utf-8") as f:
        accounts = json.load(f)

    preferred_order = [
        "CZK rodina",
        "CZK ordinace",
        "CZK na jídlo",
        "CZK TrialHelp",
        "CZK maminka svojě věci"
    ]

    accounts_sorted = []

    for pref in preferred_order:
        for acc in accounts:
            if acc["name"] == pref:
                accounts_sorted.append(acc)

    for acc in accounts:
        if acc not in accounts_sorted:
            accounts_sorted.append(acc)

    wb = Workbook()
    wb.remove(wb.active)

    # -------- ALL sheet --------
    cur.execute(SELECT_LEGACY + " ORDER BY datum DESC")
    all_rows = cur.fetchall()

    if all_rows:
        headers = list(all_rows[0].keys())
        ws_all = wb.create_sheet(title="ALL")
        ws_all.append(headers)
        format_sheet(ws_all, all_rows, headers)

    # -------- per account sheets --------
    for acc in accounts_sorted:

        acc_num = acc["account_number"]
        sheet_name = acc["name"][:31]

        print(f"➡ Creating sheet: {sheet_name}")

        query = SELECT_LEGACY + f"""
        WHERE cislo_uctu = '{acc_num}'
        ORDER BY datum DESC
        """

        cur.execute(query)
        rows = cur.fetchall()

        if not rows:
            continue

        headers = list(rows[0].keys())
        ws = wb.create_sheet(title=sheet_name)
        ws.append(headers)
        format_sheet(ws, rows, headers)

    conn.close()

    cleanup_old_exports()

    timestamp = datetime.now().strftime("%Y-%m-%d %H-%M-%S")
    output_file = os.path.join(OUTPUT_DIR, f"{timestamp} FIO transactions.xlsx")

    wb.save(output_file)

    print(f"✅ Export complete:\n{output_file}")

# ======================================================

if __name__ == "__main__":
    export_fio()