#!/usr/bin/env python3
"""
Generate client merge SQL (settings + const) from:
  - goldAli catalog template (abshode_rahimi_merge_goldali_catalog.sql UPDATE blocks)
  - client JSON: { "settings": [...], "const": [...] }

Usage:
  python generate_merge_sql.py abaeigold_client.json abaeigold
"""

from __future__ import annotations

import json
import re
import sys
from pathlib import Path

SQL_DIR = Path(__file__).resolve().parent
CATALOG_SQL = SQL_DIR / "abshode_rahimi_merge_goldali_catalog.sql"

CONST_CATALOG: list[dict] = [
    {"key": "limited_price", "title_fa": "سقف قیمت محدود", "default": ""},
    {"key": "is_gateway_open", "title_fa": "باز بودن درگاه پرداخت", "default": ""},
    {"key": "liman", "title_fa": "توکن لیمان", "default": ""},
    {"key": "header_banner", "title_fa": "بنر بالای صفحه", "default": ""},
    {"key": "app_closed", "title_fa": "بسته بودن اپ", "default": "false"},
    {"key": "main_product", "title_fa": "محصول آبشده پیش‌فرض", "default": "13"},
    {"key": "gram", "title_fa": "گرم ثبت‌نام", "default": ""},
    {"key": "first_customer_wallet_value", "title_fa": "حداقل اولین خرید", "default": ""},
    {"key": "jibit_counter", "title_fa": "شمارنده جیبیت", "default": "0"},
    {"key": "price", "title_fa": "لیست قیمت TGJU (JSON)", "default": "[]"},
]

# Legacy client keys → catalog key (value only)
SETTINGS_ALIASES = {
    "liman_token": "const:liman",
}

# Keys dropped from client settings (logs, legacy goldir in settings if any)
SETTINGS_SKIP = {
    "montzar_order_response",
    "montzar_last_product_log",
    "liman_token",
}

CONST_SKIP_PREFIXES = ("goldir",)
CONST_SKIP_KEYS = {"log", "last_order_log"}


def normalize_key(key: str) -> str:
    return key.strip().replace("\r", "").replace("\n", "")


def sql_str(value: str | None) -> str:
    if value is None:
        return "NULL"
    return "'" + str(value).replace("\\", "\\\\").replace("'", "''") + "'"


def _parse_sql_field(line: str) -> str | None:
    line = line.strip().rstrip(",")
    if line.endswith("= NULL"):
        return None
    eq = line.index("=")
    raw = line[eq + 1 :].strip()
    if raw.startswith("'") and raw.endswith("'"):
        return raw[1:-1].replace("''", "'")
    return raw


def parse_catalog_updates(text: str) -> dict[str, dict]:
    catalog: dict[str, dict] = {}
    blocks = re.split(r"(?=UPDATE `settings` SET)", text)
    for block in blocks:
        if not block.startswith("UPDATE `settings` SET"):
            continue
        key_m = re.search(
            r"`updated_at` = NOW\(\)\s+WHERE `key` = '([^']+)';", block
        )
        if not key_m:
            continue
        key = key_m.group(1)
        fields: dict[str, str | None] = {}
        for line in block.splitlines():
            line = line.strip()
            for col in ("title_fa", "can_edit", "type", "description"):
                if line.startswith(f"`{col}` ="):
                    fields[col] = _parse_sql_field(line)
        catalog[key] = {
            "title_fa": fields.get("title_fa") or "",
            "can_edit": int(fields.get("can_edit") or 0),
            "type": fields.get("type"),
            "description": fields.get("description"),
        }

    # fallback: ensure full key list from DELETE block
    delete_m = re.search(
        r"DELETE FROM `settings`\s+WHERE `key` NOT IN \(\s*(.*?)\s*\);",
        text,
        re.S,
    )
    if delete_m:
        for key in re.findall(r"'([^']+)'", delete_m.group(1)):
            catalog.setdefault(
                key,
                {"title_fa": "", "can_edit": 1, "type": "text", "description": None},
            )
    catalog.pop("price_method", None)
    return catalog


def load_client_rows(path: Path) -> tuple[dict[str, str | None], dict[str, str | None]]:
    data = json.loads(path.read_text(encoding="utf-8"))
    settings: dict[str, str | None] = {}
    const: dict[str, str | None] = {}

    for row in data.get("settings", []):
        key = normalize_key(row["key"])
        if key in SETTINGS_SKIP:
            continue
        val = row.get("value")
        if val is not None and isinstance(val, str):
            val = val.strip()
        settings[key] = val if val != "" else None

    for row in data.get("const", []):
        key = normalize_key(row["key"])
        if key in CONST_SKIP_KEYS or key.startswith(CONST_SKIP_PREFIXES):
            continue
        val = row.get("value")
        if val is not None and isinstance(val, str):
            val = val.strip()
        const[key] = val if val != "" else None

    # liman_token in settings → const.liman
    if "liman_token" in {normalize_key(r["key"]) for r in data.get("settings", [])}:
        for row in data.get("settings", []):
            if normalize_key(row["key"]) == "liman_token" and row.get("value"):
                const["liman"] = row["value"]

    # montzar_price → price_provider
    mp = settings.get("montzar_price")
    if mp and str(mp).lower() in ("true", "1"):
        settings["price_provider"] = "montzar"
    elif settings.get("main_product_price") and str(settings.get("main_product_price")).lower() == "true":
        settings["price_provider"] = "main_product"
    elif not settings.get("price_provider"):
        settings.setdefault("price_provider", "montzar" if mp and str(mp).lower() in ("true", "1") else "")

    # main_product from const if missing in settings
    if const.get("main_product") and not settings.get("main_product"):
        settings["main_product"] = const["main_product"]

    return settings, const


def is_active_value(value: str | None) -> int:
    if value is None or value == "":
        return 0
    return 1


def generate_settings_sql(
    client_name: str,
    client_name_fa: str,
    catalog: dict[str, dict],
    client_settings: dict[str, str | None],
) -> str:
    lines: list[str] = [
        "-- =============================================================================",
        f"-- {client_name_fa} — ادغام settings با کاتالوگ goldAliii",
        "--",
        f"-- منبع مقادیر: {client_name}_client.json",
        f"-- قالب کلیدها: goldali ({len(catalog)} کلید)",
        "--",
        "-- قوانین:",
        "--   • کلید مشترک → value از کلاینت، metadata از کاتالوگ",
        "--   • کلید کاتالوگ بدون مقدار در کلاینت → value=''، is_active=0",
        "--   • کلیدهای اضافی کلاینت → DELETE",
        "--",
        f"-- قبل از اجرا: USE دیتابیس {client_name_fa} + بکاپ",
        "-- =============================================================================",
        "",
        "START TRANSACTION;",
        "",
        "SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci;",
        "",
        "ALTER TABLE `settings`",
        "  MODIFY COLUMN `description` TEXT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL,",
        "  MODIFY COLUMN `title_fa` VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL,",
        "  MODIFY COLUMN `type` VARCHAR(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL;",
        "",
        "-- 1) INSERT",
        "",
    ]

    catalog_keys = sorted(catalog.keys())

    for key in catalog_keys:
        meta = catalog[key]
        val = client_settings.get(key)
        if val is None:
            val = ""
        active = is_active_value(val if val != "" else None)
        lines.append(
            "INSERT INTO `settings` (`key`, `value`, `title_fa`, `can_edit`, `is_active`, `description`, `type`)"
        )
        lines.append(
            f"SELECT {sql_str(key)}, {sql_str(val)}, {sql_str(meta['title_fa'])}, "
            f"{meta['can_edit']}, {active}, {sql_str(meta['description'])}, {sql_str(meta['type'])}"
        )
        lines.append(f"WHERE NOT EXISTS (SELECT 1 FROM `settings` WHERE `key` = {sql_str(key)} LIMIT 1);")

    lines.extend(["", "-- 2) UPDATE", ""])

    for key in catalog_keys:
        meta = catalog[key]
        val = client_settings.get(key)
        if val is None:
            val = ""
        active = is_active_value(val if val != "" else None)
        lines.append("UPDATE `settings` SET")
        lines.append(f"  `title_fa` = {sql_str(meta['title_fa'])},")
        lines.append(f"  `can_edit` = {meta['can_edit']},")
        lines.append(f"  `type` = {sql_str(meta['type'])},")
        lines.append(f"  `description` = {sql_str(meta['description'])},")
        lines.append(f"  `value` = {sql_str(val)},")
        lines.append(f"  `is_active` = {active},")
        lines.append("  `updated_at` = NOW()")
        lines.append(f"WHERE `key` = {sql_str(key)};")

    lines.extend([
        "",
        "-- 3) logo_login normalize",
        "",
        "DELETE FROM `settings`",
        "WHERE `key` LIKE 'logo_login%' AND `key` <> 'logo_login'",
        "  AND EXISTS (SELECT 1 FROM (SELECT `id`, `key` FROM `settings`) AS `s` WHERE `s`.`key` = 'logo_login');",
        "",
        "UPDATE `settings` SET",
        "  `key` = 'logo_login',",
        "  `value` = TRIM(REPLACE(REPLACE(`value`, CHAR(13), ''), CHAR(10), '')),",
        "  `updated_at` = NOW()",
        "WHERE `key` LIKE 'logo_login%' AND `key` <> 'logo_login';",
        "",
        "-- 4) DELETE extras",
        "",
        "DELETE FROM `settings`",
        "WHERE `key` NOT IN (",
    ])
    for i, key in enumerate(catalog_keys):
        comma = "," if i < len(catalog_keys) - 1 else ""
        lines.append(f"  {sql_str(key)}{comma}")
    lines.append(");")
    lines.extend([
        "",
        "DELETE FROM `settings` WHERE `key` = 'price_method';",
        "",
        "COMMIT;",
        "",
    ])
    return "\n".join(lines)


def generate_const_sql(
    client_name: str,
    client_name_fa: str,
    client_const: dict[str, str | None],
) -> str:
    lines: list[str] = [
        "-- =============================================================================",
        f"-- {client_name_fa} — ادغام const با کاتالوگ goldAliii",
        "--",
        f"-- منبع مقادیر: {client_name}_client.json",
        "-- قالب: 10 کلید goldali",
        "-- =============================================================================",
        "",
        "START TRANSACTION;",
        "",
        "SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci;",
        "",
        "ALTER TABLE `const`",
        "  MODIFY COLUMN `title_fa` VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL;",
        "",
        "-- 1) INSERT",
        "",
    ]

    for item in CONST_CATALOG:
        key = item["key"]
        val = client_const.get(key)
        if val is None:
            val = item["default"]
        lines.append("INSERT INTO `const` (`key`, `value`, `title_fa`)")
        lines.append(
            f"SELECT {sql_str(key)}, {sql_str(val)}, {sql_str(item['title_fa'])}"
        )
        lines.append(f"WHERE NOT EXISTS (SELECT 1 FROM `const` WHERE `key` = {sql_str(key)} LIMIT 1);")

    lines.extend(["", "-- 2) UPDATE", ""])

    for item in CONST_CATALOG:
        key = item["key"]
        val = client_const.get(key)
        if val is None:
            val = item["default"]
        lines.append("UPDATE `const` SET")
        lines.append(f"  `title_fa` = {sql_str(item['title_fa'])},")
        lines.append(f"  `value` = {sql_str(val)},")
        lines.append("  `updated_at` = NOW()")
        lines.append(f"WHERE `key` = {sql_str(key)};")

    allowed = [item["key"] for item in CONST_CATALOG]
    lines.extend(["", "-- 3) DELETE extras", "", "DELETE FROM `const`", "WHERE `key` NOT IN ("])
    for i, key in enumerate(allowed):
        comma = "," if i < len(allowed) - 1 else ""
        lines.append(f"  {sql_str(key)}{comma}")
    lines.extend([");", "", "COMMIT;", ""])
    return "\n".join(lines)


def main() -> None:
    if len(sys.argv) < 3:
        print(__doc__)
        sys.exit(1)

    client_json = Path(sys.argv[1])
    client_slug = sys.argv[2]
    client_name_fa = sys.argv[3] if len(sys.argv) > 3 else client_slug

    catalog_text = CATALOG_SQL.read_text(encoding="utf-8")
    catalog = parse_catalog_updates(catalog_text)
    if not catalog:
        print("ERROR: could not parse catalog from", CATALOG_SQL)
        sys.exit(1)

    client_settings, client_const = load_client_rows(client_json)

    settings_sql = generate_settings_sql(client_slug, client_name_fa, catalog, client_settings)
    const_sql = generate_const_sql(client_slug, client_name_fa, client_const)

    out_settings = SQL_DIR / f"{client_slug}_merge_goldali_catalog.sql"
    out_const = SQL_DIR / f"{client_slug}_merge_goldali_const.sql"
    out_settings.write_text(settings_sql, encoding="utf-8")
    out_const.write_text(const_sql, encoding="utf-8")

    print(f"Wrote {out_settings} ({len(catalog)} keys)")
    print(f"Wrote {out_const} ({len(CONST_CATALOG)} keys)")


if __name__ == "__main__":
    main()