"""海报功能路由。"""
import os
from flask import Blueprint, request, jsonify, send_file
from insurance.middleware.auth_middleware import jwt_required
from insurance.utils.response import success, error, ErrorCode

poster_bp = Blueprint("poster", __name__)
poster_service = None


def _get_service():
    global poster_service
    if poster_service is None:
        from insurance.poster.service import PosterService
        poster_service = PosterService()
    return poster_service


def _user_manual_upload_enabled() -> bool:
    from insurance.config import get_config

    return get_config("POSTER_USER_MANUAL_UPLOAD_ENABLED", "true").strip().lower() in (
        "1", "true", "yes", "on",
    )


# ─── 健康检查 ─────────────────────────────────────────────

@poster_bp.route("/health", methods=["GET"])
def health():
    """海报模块健康检查：reviewed 产品、模板、文案模板、模型配置。"""
    from flask import jsonify
    checks = {}
    critical_missing = []

    try:
        from insurance.models.ppt_config import PptProduct
        count = PptProduct.query.filter(
            PptProduct.manual_parse_status == "reviewed",
            PptProduct.status == 1,
        ).count()
        checks["reviewed_products"] = count
        if count == 0:
            critical_missing.append("reviewed_products")
    except Exception as e:
        checks["reviewed_products"] = f"error: {e}"
        critical_missing.append("reviewed_products")

    try:
        from insurance.models.poster_template_model import PosterTemplate
        count = PosterTemplate.query.filter_by(status=1).count()
        checks["poster_templates"] = count
        if count == 0:
            critical_missing.append("poster_templates")
    except Exception as e:
        checks["poster_templates"] = f"error: {e}"
        critical_missing.append("poster_templates")

    try:
        from insurance.models.poster_copy_template import PosterCopyTemplate
        count = PosterCopyTemplate.query.filter_by(status=1).count()
        checks["copy_templates"] = count
        if count == 0:
            critical_missing.append("copy_templates")
    except Exception as e:
        checks["copy_templates"] = f"error: {e}"
        critical_missing.append("copy_templates")

    try:
        from insurance.models.system_setting import SystemSetting
        keys = ["poster_image_provider", "poster_image_api_key"]
        settings = {s.key: s.value for s in SystemSetting.query.filter(SystemSetting.key.in_(keys)).all()}
        checks["image_model_configured"] = bool(settings.get("poster_image_api_key"))
    except Exception as e:
        checks["image_model_configured"] = f"error: {e}"

    if critical_missing:
        checks["status"] = "degraded"
        checks["missing"] = critical_missing
        return jsonify(checks), 503

    checks["status"] = "ok"
    return success(checks)


# ─── 产品列表 ─────────────────────────────────────────────

@poster_bp.route("/products", methods=["GET"])
@jwt_required
def list_products():
    """获取已 reviewed 的产品列表。"""
    return jsonify(_get_service().get_reviewed_products())


@poster_bp.route("/product-sources", methods=["GET"])
@jwt_required
def list_product_sources():
    """获取公共产品和当前用户已确认的私有产品资料。"""
    user_id = str(getattr(request, "user_id", "guest"))
    from insurance.poster.product_material_service import ProductMaterialService

    manual_enabled = _user_manual_upload_enabled()
    library_result = _get_service().get_reviewed_products()
    return jsonify({
        "code": 0,
        "message": "success",
        "data": {
            "libraryProducts": library_result.get("data", []),
            "myMaterials": (
                ProductMaterialService().list_available(user_id)
                if manual_enabled else []
            ),
            "userManualUploadEnabled": manual_enabled,
        },
    })


# ─── 用户产品小册子 ───────────────────────────────────────

@poster_bp.route("/product-materials", methods=["GET"])
@jwt_required
def list_product_materials():
    user_id = str(getattr(request, "user_id", "guest"))
    from insurance.poster.product_material_service import ProductMaterialService

    if not _user_manual_upload_enabled():
        return jsonify({"code": 0, "data": {"total": 0, "items": []}})
    return jsonify(ProductMaterialService().list_materials(user_id, {
        "page": request.args.get("page", 1, type=int),
        "page_size": request.args.get("page_size", 50, type=int),
        "search": request.args.get("search", ""),
    }))


@poster_bp.route("/product-materials", methods=["POST"])
@jwt_required
def upload_product_material():
    user_id = str(getattr(request, "user_id", "guest"))
    file = request.files.get("file")
    from insurance.poster.product_material_service import ProductMaterialService

    if not _user_manual_upload_enabled():
        return error(4108, "用户上传产品小册子功能暂未开放", 403)
    return jsonify(ProductMaterialService().upload(
        user_id=user_id,
        file=file,
        password=request.form.get("password", ""),
        company_id=request.form.get("companyId", ""),
        plan_type=request.form.get("planType", ""),
    ))


@poster_bp.route("/product-materials/<int:material_id>", methods=["GET"])
@jwt_required
def get_product_material(material_id):
    user_id = str(getattr(request, "user_id", "guest"))
    from insurance.poster.product_material_service import ProductMaterialService

    return jsonify(ProductMaterialService().get(material_id, user_id))


@poster_bp.route("/product-materials/<int:material_id>/confirm", methods=["PUT"])
@jwt_required
def confirm_product_material(material_id):
    user_id = str(getattr(request, "user_id", "guest"))
    from insurance.poster.product_material_service import ProductMaterialService

    return jsonify(ProductMaterialService().confirm(
        material_id,
        user_id,
        request.get_json(silent=True) or {},
    ))


@poster_bp.route("/product-materials/<int:material_id>/retry", methods=["POST"])
@jwt_required
def retry_product_material(material_id):
    user_id = str(getattr(request, "user_id", "guest"))
    from insurance.poster.product_material_service import ProductMaterialService

    return jsonify(ProductMaterialService().retry(material_id, user_id))


@poster_bp.route("/product-materials/<int:material_id>/submit-review", methods=["POST"])
@jwt_required
def submit_product_material_review(material_id):
    user_id = str(getattr(request, "user_id", "guest"))
    from insurance.poster.product_material_service import ProductMaterialService

    return jsonify(ProductMaterialService().submit_review(material_id, user_id))


@poster_bp.route("/product-materials/<int:material_id>", methods=["DELETE"])
@jwt_required
def delete_product_material(material_id):
    user_id = str(getattr(request, "user_id", "guest"))
    from insurance.poster.product_material_service import ProductMaterialService

    return jsonify(ProductMaterialService().delete(material_id, user_id))


@poster_bp.route("/product-materials/<int:material_id>/file", methods=["GET"])
@jwt_required
def get_product_material_file(material_id):
    user_id = str(getattr(request, "user_id", "guest"))
    from insurance.poster.product_material_service import ProductMaterialService

    material, filepath = ProductMaterialService().get_file(material_id, user_id)
    if not material:
        return error(4106, "产品资料不存在或无权访问", 404)
    if not filepath:
        return error(4107, "小册子原文件不存在", 404)
    return send_file(
        filepath,
        mimetype="application/pdf",
        as_attachment=False,
        download_name=material.original_name,
    )


# ─── 计划书上传 ───────────────────────────────────────────

@poster_bp.route("/case-upload", methods=["POST"])
@jwt_required
def upload_case():
    """上传计划书 PDF + 触发解析。"""
    user_id = str(getattr(request, "user_id", "guest"))
    product_id = request.form.get("productId", "")
    product_source = {
        "type": request.form.get("productSourceType", "") or (
            "library_product" if product_id else ""
        ),
        "id": request.form.get("productSourceId", "") or product_id,
    }
    password = request.form.get("password", "")
    file = request.files.get("file")
    if not file:
        return error(ErrorCode.PARAM_ERROR, "请上传文件")
    return jsonify(_get_service().upload_case(
        user_id,
        product_id,
        file,
        password,
        product_source=product_source,
    ))


@poster_bp.route("/case-upload/<int:record_id>", methods=["GET"])
@jwt_required
def get_case_upload(record_id):
    """获取解析结果。"""
    user_id = str(getattr(request, "user_id", "guest"))
    return jsonify(_get_service().get_case_upload(record_id, user_id))


@poster_bp.route("/case-upload/<int:record_id>/confirm", methods=["PUT"])
@jwt_required
def confirm_case_upload(record_id):
    """核对/修正解析数据。"""
    user_id = str(getattr(request, "user_id", "guest"))
    return jsonify(_get_service().confirm_case_upload(record_id, user_id, request.get_json(silent=True) or {}))


# ─── 模板列表 ─────────────────────────────────────────────

@poster_bp.route("/templates", methods=["GET"])
@jwt_required
def list_templates():
    """获取可用海报模板列表。"""
    return jsonify(_get_service().get_templates())


@poster_bp.route("/copy-templates", methods=["GET"])
@jwt_required
def list_copy_templates():
    """获取可用文案模板列表。"""
    return jsonify(_get_service().get_copy_templates())


# ─── 文案生成 ─────────────────────────────────────────────

@poster_bp.route("/generate-copy", methods=["POST"])
@jwt_required
def generate_copy():
    """生成文案（template/ai 模式）。"""
    user_id = str(getattr(request, "user_id", "guest"))
    return jsonify(_get_service().generate_copy(user_id, request.get_json(silent=True) or {}))


@poster_bp.route("/compliance-check", methods=["POST"])
@jwt_required
def check_compliance():
    """检查海报文案并返回字符级问题位置。"""
    return jsonify(_get_service().check_compliance(request.get_json(silent=True) or {}))


# ─── 海报生成 ─────────────────────────────────────────────

@poster_bp.route("/generate", methods=["POST"])
@jwt_required
def generate_poster():
    """生成海报图片。"""
    user_id = str(getattr(request, "user_id", "guest"))
    return jsonify(_get_service().generate_poster(user_id, request.get_json(silent=True) or {}))


# ─── 下载海报 ─────────────────────────────────────────────

@poster_bp.route("/download/<int:record_id>", methods=["GET"])
@jwt_required
def download_poster(record_id):
    """下载海报文件。"""
    from insurance.models.poster_record import PosterRecord
    from insurance.config import get_storage_root
    user_id = str(getattr(request, "user_id", "guest"))
    record = PosterRecord.query.get(record_id)
    if not record or record.user_id != user_id:
        return error(ErrorCode.NOT_FOUND, "记录不存在")
    if not record.export_url:
        return error(ErrorCode.NOT_FOUND, "文件不存在")
    # 路径安全校验：仅允许 outputs/posters 目录
    file_abs = os.path.abspath(record.export_url)
    posters_dir = os.path.abspath(os.path.join(get_storage_root(), "outputs", "posters"))
    if not file_abs.startswith(posters_dir) or not os.path.exists(file_abs):
        return error(ErrorCode.NOT_FOUND, "文件不存在")
    return send_file(file_abs, as_attachment=True,
                     download_name=f"poster_{record_id}.png", mimetype="image/png")


# ─── 记录列表 ─────────────────────────────────────────────

@poster_bp.route("/records", methods=["GET"])
@jwt_required
def list_records():
    """当前用户的海报生成记录。"""
    user_id = str(getattr(request, "user_id", "guest"))
    params = {
        "page": request.args.get("page", 1, type=int),
        "page_size": request.args.get("page_size", 20, type=int),
    }
    return jsonify(_get_service().list_records(user_id, params))


@poster_bp.route("/records/<int:record_id>", methods=["GET"])
@jwt_required
def get_record(record_id):
    """记录详情。"""
    user_id = str(getattr(request, "user_id", "guest"))
    return jsonify(_get_service().get_record(record_id, user_id))


@poster_bp.route("/records/<int:record_id>/document", methods=["GET", "PUT"])
@jwt_required
def poster_document(record_id):
    """读取或保存可编辑海报文档。"""
    user_id = str(getattr(request, "user_id", "guest"))
    if request.method == "PUT":
        payload = request.get_json(silent=True) or {}
        return jsonify(_get_service().save_document(
            record_id, user_id, payload.get("document") or payload
        ))
    result = _get_service().get_record(record_id, user_id)
    if result.get("code") != 0:
        return jsonify(result)
    record = result["data"]
    return jsonify({
        "code": 0,
        "message": "success",
        "data": {
            "document": record.get("document"),
            "revision": record.get("documentRevision"),
        },
    })


@poster_bp.route("/records/<int:record_id>/rendered", methods=["POST"])
@jwt_required
def save_rendered_poster(record_id):
    """保存前端 HTML 画布合成后的最终 PNG。"""
    import json

    user_id = str(getattr(request, "user_id", "guest"))
    try:
        document = json.loads(request.form.get("document") or "{}")
    except (json.JSONDecodeError, TypeError):
        return error(ErrorCode.PARAM_ERROR, "海报文档格式错误")
    return jsonify(_get_service().save_rendered(
        record_id, user_id, request.files.get("file"), document
    ))


@poster_bp.route("/records/<int:record_id>/background", methods=["GET"])
@jwt_required
def get_poster_background(record_id):
    """读取 AI 背景资产；兼容迁移前将背景写入 export_url 的记录。"""
    from insurance.models.poster_record import PosterRecord
    from insurance.config import get_storage_root

    user_id = str(getattr(request, "user_id", "guest"))
    record = PosterRecord.query.get(record_id)
    if not record or record.user_id != user_id:
        return error(ErrorCode.NOT_FOUND, "记录不存在")
    filepath = record.background_file_url or record.export_url
    file_abs = os.path.abspath(filepath or "")
    posters_dir = os.path.abspath(os.path.join(get_storage_root(), "outputs", "posters"))
    if not file_abs.startswith(posters_dir) or not os.path.exists(file_abs):
        return error(ErrorCode.NOT_FOUND, "背景文件不存在")
    return send_file(file_abs, as_attachment=False, mimetype="image/png")