package admin

import (
	"strconv"

	"github.com/gofiber/fiber/v2"

	merchantpayment "github.com/break/junhong_cmp_fiber/internal/application/merchantpayment"
	"github.com/break/junhong_cmp_fiber/internal/model/dto"
	"github.com/break/junhong_cmp_fiber/pkg/errors"
	"github.com/break/junhong_cmp_fiber/pkg/response"
)

// PaymentMerchantHandler 处理特权商户与商户池配置请求。
type PaymentMerchantHandler struct {
	service *merchantpayment.ManagementService
}

// NewPaymentMerchantHandler 创建商户池管理处理器。
func NewPaymentMerchantHandler(service *merchantpayment.ManagementService) *PaymentMerchantHandler {
	return &PaymentMerchantHandler{service: service}
}
func pathID(c *fiber.Ctx) (uint, error) {
	id, err := strconv.ParseUint(c.Params("id"), 10, 64)
	if err != nil || id == 0 {
		return 0, errors.New(errors.CodeInvalidParam, "无效的路径ID")
	}
	return uint(id), nil
}

// CreateMerchant 创建支付商户。
// POST /api/admin/payment-merchants
func (h *PaymentMerchantHandler) CreateMerchant(c *fiber.Ctx) error {
	var r dto.PaymentMerchantRequest
	if err := c.BodyParser(&r); err != nil {
		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
	}
	v, err := h.service.CreateMerchant(c.UserContext(), r)
	if err != nil {
		return err
	}
	return response.Success(c, v)
}

// ListMerchants 分页查询支付商户。
// GET /api/admin/payment-merchants
func (h *PaymentMerchantHandler) ListMerchants(c *fiber.Ctx) error {
	var r dto.PaymentMerchantListRequest
	if err := c.QueryParser(&r); err != nil {
		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
	}
	v, n, err := h.service.ListMerchants(c.UserContext(), r)
	if err != nil {
		return err
	}
	return response.SuccessWithPagination(c, v, n, r.Page, r.PageSize)
}

// GetMerchant 查询支付商户详情。
// GET /api/admin/payment-merchants/:id
func (h *PaymentMerchantHandler) GetMerchant(c *fiber.Ctx) error {
	id, err := pathID(c)
	if err != nil {
		return err
	}
	v, err := h.service.GetMerchant(c.UserContext(), id)
	if err != nil {
		return err
	}
	return response.Success(c, v)
}

// UpdateMerchant 更新支付商户。
// PUT /api/admin/payment-merchants/:id
func (h *PaymentMerchantHandler) UpdateMerchant(c *fiber.Ctx) error {
	id, err := pathID(c)
	if err != nil {
		return err
	}
	var r dto.PaymentMerchantUpdateRequest
	if err := c.BodyParser(&r); err != nil {
		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
	}
	v, err := h.service.UpdateMerchant(c.UserContext(), id, r)
	if err != nil {
		return err
	}
	return response.Success(c, v)
}

// DeleteMerchant 删除支付商户。
// DELETE /api/admin/payment-merchants/:id
func (h *PaymentMerchantHandler) DeleteMerchant(c *fiber.Ctx) error {
	id, err := pathID(c)
	if err != nil {
		return err
	}
	var r dto.PaymentMerchantDeleteRequest
	if err := c.BodyParser(&r); err != nil {
		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
	}
	if err := h.service.DeleteMerchant(c.UserContext(), id, r.Confirm); err != nil {
		return err
	}
	return response.Success(c, nil)
}

// CreatePool 创建商户池。
// POST /api/admin/payment-merchant-pools
func (h *PaymentMerchantHandler) CreatePool(c *fiber.Ctx) error {
	var r dto.PaymentMerchantPoolRequest
	if err := c.BodyParser(&r); err != nil {
		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
	}
	v, err := h.service.SavePool(c.UserContext(), 0, r)
	if err != nil {
		return err
	}
	return response.Success(c, v)
}

// UpdatePool 更新商户池。
// PUT /api/admin/payment-merchant-pools/:id
func (h *PaymentMerchantHandler) UpdatePool(c *fiber.Ctx) error {
	id, err := pathID(c)
	if err != nil {
		return err
	}
	var r dto.PaymentMerchantPoolRequest
	if err := c.BodyParser(&r); err != nil {
		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
	}
	v, err := h.service.SavePool(c.UserContext(), id, r)
	if err != nil {
		return err
	}
	return response.Success(c, v)
}

// EnablePool 启用商户池。
// POST /api/admin/payment-merchant-pools/:id/enable
func (h *PaymentMerchantHandler) EnablePool(c *fiber.Ctx) error {
	id, err := pathID(c)
	if err != nil {
		return err
	}
	result, err := h.service.SetPoolEnabled(c.UserContext(), id, true)
	if err != nil {
		return err
	}
	return response.Success(c, result)
}

// DisablePool 停用商户池。
// POST /api/admin/payment-merchant-pools/:id/disable
func (h *PaymentMerchantHandler) DisablePool(c *fiber.Ctx) error {
	id, err := pathID(c)
	if err != nil {
		return err
	}
	result, err := h.service.SetPoolEnabled(c.UserContext(), id, false)
	if err != nil {
		return err
	}
	return response.Success(c, result)
}

// GetAuthorization 获取微信授权配置。
// GET /api/admin/wechat-authorizations
func (h *PaymentMerchantHandler) GetAuthorization(c *fiber.Ctx) error {
	v, err := h.service.GetAuthorization(c.UserContext())
	if err != nil {
		return err
	}
	return response.Success(c, v)
}

// ListPools 分页查询商户池。
// GET /api/admin/payment-merchant-pools
func (h *PaymentMerchantHandler) ListPools(c *fiber.Ctx) error {
	var r dto.PaymentMerchantPoolListRequest
	if err := c.QueryParser(&r); err != nil {
		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
	}
	v, total, err := h.service.ListPools(c.UserContext(), r)
	if err != nil {
		return err
	}
	return response.SuccessWithPagination(c, v, total, r.Page, r.PageSize)
}

// GetPool 查询商户池详情。
// GET /api/admin/payment-merchant-pools/:id
func (h *PaymentMerchantHandler) GetPool(c *fiber.Ctx) error {
	id, err := pathID(c)
	if err != nil {
		return err
	}
	v, err := h.service.GetPool(c.UserContext(), id)
	if err != nil {
		return err
	}
	return response.Success(c, v)
}

// SaveAuthorization 保存微信授权配置。
// PUT /api/admin/wechat-authorizations/current
func (h *PaymentMerchantHandler) SaveAuthorization(c *fiber.Ctx) error {
	var r dto.WechatAuthorizationRequest
	if err := c.BodyParser(&r); err != nil {
		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
	}
	v, err := h.service.SaveAuthorization(c.UserContext(), r)
	if err != nil {
		return err
	}
	return response.Success(c, v)
}