package app

import (
	"context"

	"github.com/go-playground/validator/v10"
	"github.com/gofiber/fiber/v2"

	packagesilenceapp "github.com/break/junhong_cmp_fiber/internal/application/packagesilence"
	"github.com/break/junhong_cmp_fiber/internal/middleware"
	"github.com/break/junhong_cmp_fiber/internal/model/dto"
	packagesilencequery "github.com/break/junhong_cmp_fiber/internal/query/packagesilence"
	"github.com/break/junhong_cmp_fiber/pkg/constants"
	"github.com/break/junhong_cmp_fiber/pkg/errors"
	"github.com/break/junhong_cmp_fiber/pkg/response"
)

// ClientPackageSilenceHandler H5 沉默期延期：资格、试算、自助下单、我的延期订单与沉默期流水。
// 资产归属由用例按当前客户校验；金额与月数全部由后端计算。
type ClientPackageSilenceHandler struct {
	extensions *packagesilenceapp.ExtensionService
	query      *packagesilencequery.Query
	validator  *validator.Validate
}

// NewClientPackageSilenceHandler 创建 H5 沉默期 Handler。
func NewClientPackageSilenceHandler(extensions *packagesilenceapp.ExtensionService, query *packagesilencequery.Query, validator *validator.Validate) *ClientPackageSilenceHandler {
	return &ClientPackageSilenceHandler{extensions: extensions, query: query, validator: validator}
}

// customerContext 返回当前客户 ID 与跳过后台数据范围的上下文（资产归属另行校验）。
func (h *ClientPackageSilenceHandler) customerContext(c *fiber.Ctx) (context.Context, uint, error) {
	customerID, ok := middleware.GetCustomerID(c)
	if !ok || customerID == 0 {
		return nil, 0, errors.New(errors.CodeUnauthorized)
	}
	ctx := context.WithValue(c.UserContext(), constants.ContextKeySubordinateShopIDs, []uint{})
	return ctx, customerID, nil
}

func (h *ClientPackageSilenceHandler) validate(req any) error {
	if h.validator == nil {
		return nil
	}
	if err := h.validator.Struct(req); err != nil {
		return errors.New(errors.CodeInvalidParam, "请求参数不合法")
	}
	return nil
}

// Eligibility 延期资格。GET /api/c/v1/package-silence/eligibility
func (h *ClientPackageSilenceHandler) Eligibility(c *fiber.Ctx) error {
	var req dto.SilenceEligibilityRequest
	if err := c.QueryParser(&req); err != nil {
		return errors.New(errors.CodeInvalidParam)
	}
	if err := h.validate(&req); err != nil {
		return err
	}
	ctx, customerID, err := h.customerContext(c)
	if err != nil {
		return err
	}
	result, err := h.extensions.Eligibility(ctx, req.PackageUsageID, packagesilenceapp.Scope{CustomerID: customerID})
	if err != nil {
		return err
	}
	return response.Success(c, result)
}

// Quote 按天数试算。GET /api/c/v1/package-silence/quote
func (h *ClientPackageSilenceHandler) Quote(c *fiber.Ctx) error {
	var req dto.SilenceQuoteRequest
	if err := c.QueryParser(&req); err != nil {
		return errors.New(errors.CodeInvalidParam)
	}
	if err := h.validate(&req); err != nil {
		return err
	}
	ctx, customerID, err := h.customerContext(c)
	if err != nil {
		return err
	}
	result, err := h.extensions.Quote(ctx, req.PackageUsageID, req.Days, packagesilenceapp.Scope{CustomerID: customerID})
	if err != nil {
		return err
	}
	return response.Success(c, result)
}

// CreateOrder 客户自助下单付费延期。POST /api/c/v1/package-silence/orders
func (h *ClientPackageSilenceHandler) CreateOrder(c *fiber.Ctx) error {
	var req dto.SilenceOnlineOrderRequest
	if err := c.BodyParser(&req); err != nil {
		return errors.New(errors.CodeInvalidParam)
	}
	if err := h.validate(&req); err != nil {
		return err
	}
	ctx, customerID, err := h.customerContext(c)
	if err != nil {
		return err
	}
	req.EvidenceRefs = nil
	result, err := h.extensions.CreateOnlineOrder(ctx, packagesilenceapp.OnlineOrderCommand{
		Request: req, Scope: packagesilenceapp.Scope{CustomerID: customerID}, PayerClientIP: c.IP(),
	})
	if err != nil {
		return err
	}
	return response.Success(c, result)
}

// ListOrders 我的延期订单。GET /api/c/v1/package-silence/orders
func (h *ClientPackageSilenceHandler) ListOrders(c *fiber.Ctx) error {
	var req dto.SilenceOrderListRequest
	if err := c.QueryParser(&req); err != nil {
		return errors.New(errors.CodeInvalidParam)
	}
	ctx, customerID, err := h.customerContext(c)
	if err != nil {
		return err
	}
	result, err := h.query.ListOrders(ctx, packagesilencequery.OrderFilter{Request: req, CustomerID: customerID})
	if err != nil {
		return err
	}
	return response.Success(c, result)
}

// GetOrder 我的延期订单详情。GET /api/c/v1/package-silence/orders/:id
func (h *ClientPackageSilenceHandler) GetOrder(c *fiber.Ctx) error {
	id, err := c.ParamsInt("id")
	if err != nil || id <= 0 {
		return errors.New(errors.CodeInvalidParam)
	}
	ctx, customerID, err := h.customerContext(c)
	if err != nil {
		return err
	}
	result, err := h.query.GetOrder(ctx, uint(id), customerID)
	if err != nil {
		return err
	}
	return response.Success(c, result)
}

// ListRecords 套餐沉默期流水。GET /api/c/v1/package-silence/records
func (h *ClientPackageSilenceHandler) ListRecords(c *fiber.Ctx) error {
	var req dto.SilenceRecordListRequest
	if err := c.QueryParser(&req); err != nil {
		return errors.New(errors.CodeInvalidParam)
	}
	if err := h.validate(&req); err != nil {
		return err
	}
	ctx, customerID, err := h.customerContext(c)
	if err != nil {
		return err
	}
	result, err := h.extensions.Records(ctx, req.PackageUsageID, packagesilenceapp.Scope{CustomerID: customerID})
	if err != nil {
		return err
	}
	return response.Success(c, result)
}