"""迁移 014: 导入 PPT 配置数据。

使用原始 SQL 而非 ORM，避免模型字段与实际表结构不一致的问题。
（ORM 模型包含 migrate_017 才创建的 slides_config_json 字段）
"""
import os
import json
import logging
from sqlalchemy import text

logger = logging.getLogger(__name__)

CONFIG_DIR = os.path.join(os.path.dirname(__file__), "..", "ppt", "config")


def _read_json_file(filepath):
    try:
        with open(filepath, "r", encoding="utf-8") as f:
            return json.load(f)
    except Exception:
        return None


def _read_json_files_in_dir(dirpath):
    results = []
    if not os.path.isdir(dirpath):
        return results
    for root, _, files in os.walk(dirpath):
        for fname in files:
            if fname.endswith(".json"):
                data = _read_json_file(os.path.join(root, fname))
                if data is not None:
                    results.append(data)
    return results


def _record_exists(db, table: str, id_col: str, id_val: str) -> bool:
    """检查记录是否存在。"""
    result = db.session.execute(
        text(f"SELECT 1 FROM {table} WHERE {id_col} = :id LIMIT 1"),
        {"id": id_val},
    )
    return result.fetchone() is not None


def migrate():
    """迁移入口。"""
    from insurance.db.compat import db

    # 公司
    companies_dir = os.path.join(CONFIG_DIR, "companies")
    count = 0
    for d in _read_json_files_in_dir(companies_dir):
        if not d.get("id") or _record_exists(db, "insurance_ppt_companies", "id", d["id"]):
            continue
        db.session.execute(text(
            "INSERT INTO insurance_ppt_companies "
            "(id, display_name, aliases_json, tenant_id, knowledge_directories_json, "
            "evidence_ranking_json, company_intro, company_highlights_json) "
            "VALUES (:id, :display_name, :aliases_json, :tenant_id, :knowledge_directories_json, "
            ":evidence_ranking_json, :company_intro, :company_highlights_json)"
        ), {
            "id": d["id"],
            "display_name": d.get("displayName", ""),
            "aliases_json": json.dumps(d.get("aliases", []), ensure_ascii=False),
            "tenant_id": d.get("tenantId", "default"),
            "knowledge_directories_json": json.dumps(d.get("knowledgeDirectories", []), ensure_ascii=False),
            "evidence_ranking_json": json.dumps(d.get("evidenceRanking", []), ensure_ascii=False),
            "company_intro": d.get("companyIntro", ""),
            "company_highlights_json": json.dumps(d.get("companyHighlights", []), ensure_ascii=False),
        })
        count += 1
    db.session.commit()
    logger.info(f"[migrate_014] 导入 {count} 家公司")

    # 产品
    products_dir = os.path.join(CONFIG_DIR, "products")
    count = 0
    for d in _read_json_files_in_dir(products_dir):
        if not d.get("id") or _record_exists(db, "insurance_ppt_products", "id", d["id"]):
            continue
        db.session.execute(text(
            "INSERT INTO insurance_ppt_products "
            "(id, company_id, plan_type, display_name, aliases_json, required_modules_json) "
            "VALUES (:id, :company_id, :plan_type, :display_name, :aliases_json, :required_modules_json)"
        ), {
            "id": d["id"],
            "company_id": d.get("companyId", ""),
            "plan_type": d.get("planType", "savings"),
            "display_name": d.get("displayName", ""),
            "aliases_json": json.dumps(d.get("aliases", []), ensure_ascii=False),
            "required_modules_json": json.dumps(d.get("requiredModules", []), ensure_ascii=False),
        })
        count += 1
    db.session.commit()
    logger.info(f"[migrate_014] 导入 {count} 个产品")

    # 模板（只使用 migrate_014 时已存在的列）
    templates_dir = os.path.join(CONFIG_DIR, "templates")
    count = 0
    for d in _read_json_files_in_dir(templates_dir):
        if not d.get("id") or _record_exists(db, "insurance_ppt_templates", "id", d["id"]):
            continue
        db.session.execute(text(
            "INSERT INTO insurance_ppt_templates "
            "(id, plan_type, style_preset, source_template_asset_id, clone_ready, "
            "clone_renderer, required_page_types_json) "
            "VALUES (:id, :plan_type, :style_preset, :source_template_asset_id, :clone_ready, "
            ":clone_renderer, :required_page_types_json)"
        ), {
            "id": d["id"],
            "plan_type": d.get("planType", "savings"),
            "style_preset": d.get("stylePreset", "broker"),
            "source_template_asset_id": d.get("sourceTemplateAssetId"),
            "clone_ready": d.get("cloneReady", False),
            "clone_renderer": d.get("cloneRenderer"),
            "required_page_types_json": json.dumps(d.get("requiredPageTypes", []), ensure_ascii=False),
        })
        count += 1
    db.session.commit()
    logger.info(f"[migrate_014] 导入 {count} 个模板")

    # Bundle
    bundles_dir = os.path.join(CONFIG_DIR, "bundles")
    count = 0
    for d in _read_json_files_in_dir(bundles_dir):
        if not d.get("id") or _record_exists(db, "insurance_ppt_bundles", "id", d["id"]):
            continue
        db.session.execute(text(
            "INSERT INTO insurance_ppt_bundles "
            "(id, display_name, products_json, template_family, status, modules_json) "
            "VALUES (:id, :display_name, :products_json, :template_family, :status, :modules_json)"
        ), {
            "id": d["id"],
            "display_name": d.get("displayName", ""),
            "products_json": json.dumps(d.get("products", []), ensure_ascii=False),
            "template_family": d.get("templateFamily", "bundle"),
            "status": d.get("status", "active"),
            "modules_json": json.dumps(d.get("modules", []), ensure_ascii=False),
        })
        count += 1
    db.session.commit()
    logger.info(f"[migrate_014] 导入 {count} 个 Bundle")