package feed

import (
	"context"
	"errors"
	"strconv"

	"git.huangwc.com/pig/pig-farm-controller/internal/app/controller"
	"git.huangwc.com/pig/pig-farm-controller/internal/app/dto"
	"git.huangwc.com/pig/pig-farm-controller/internal/app/service"
	"git.huangwc.com/pig/pig-farm-controller/internal/infra/logs"

	"github.com/labstack/echo/v4"
)

// PigBreedController 定义了猪品种相关的控制器
type PigBreedController struct {
	ctx                   context.Context
	feedManagementService service.FeedManagementService
}

// NewPigBreedController 创建一个新的 PigBreedController 实例
func NewPigBreedController(ctx context.Context, feedManagementService service.FeedManagementService) *PigBreedController {
	return &PigBreedController{
		ctx:                   ctx,
		feedManagementService: feedManagementService,
	}
}

// CreatePigBreed godoc
// @Summary      创建猪品种
// @Description  创建一个新的猪品种。
// @Tags         饲料管理-猪
// @Security     BearerAuth
// @Accept       json
// @Produce      json
// @Param        pigBreed body dto.CreatePigBreedRequest true "猪品种信息"
// @Success      200 {object} controller.Response{data=dto.PigBreedResponse} "业务码为201代表创建成功"
// @Router       /api/v1/feed/pig-breeds [post]
func (c *PigBreedController) CreatePigBreed(ctx echo.Context) error {
	reqCtx, logger := logs.Trace(ctx.Request().Context(), c.ctx, "CreatePigBreed")
	var req dto.CreatePigBreedRequest
	const actionType = "创建猪品种"
	if err := ctx.Bind(&req); err != nil {
		logger.Errorf("%s: 参数绑定失败: %v", actionType, err)
		return controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的请求体: "+err.Error(), actionType, "请求体绑定失败", req)
	}

	resp, err := c.feedManagementService.CreatePigBreed(reqCtx, &req)
	if err != nil {
		logger.Errorf("%s: 服务层创建猪品种失败: %v", actionType, err)
		// 猪品种没有名称冲突的领域错误，这里直接返回内部错误
		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "创建猪品种失败: "+err.Error(), actionType, "服务层创建猪品种失败", req)
	}

	logger.Infof("%s: 猪品种创建成功, ID: %d", actionType, resp.ID)
	return controller.SendSuccessWithAudit(ctx, controller.CodeCreated, "猪品种创建成功", resp, actionType, "猪品种创建成功", resp)
}

// UpdatePigBreed godoc
// @Summary      更新猪品种
// @Description  根据ID更新猪品种信息。
// @Tags         饲料管理-猪
// @Security     BearerAuth
// @Accept       json
// @Produce      json
// @Param        id path int true "猪品种ID"
// @Param        pigBreed body dto.UpdatePigBreedRequest true "更新后的猪品种信息"
// @Success      200 {object} controller.Response{data=dto.PigBreedResponse} "业务码为200代表更新成功"
// @Router       /api/v1/feed/pig-breeds/{id} [put]
func (c *PigBreedController) UpdatePigBreed(ctx echo.Context) error {
	reqCtx, logger := logs.Trace(ctx.Request().Context(), c.ctx, "UpdatePigBreed")
	const actionType = "更新猪品种"
	idStr := ctx.Param("id")
	id, err := strconv.ParseUint(idStr, 10, 64)
	if err != nil {
		logger.Errorf("%s: 猪品种ID格式错误: %v, ID: %s", actionType, err, idStr)
		return controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的猪品种ID格式", actionType, "猪品种ID格式错误", idStr)
	}

	var req dto.UpdatePigBreedRequest
	if err := ctx.Bind(&req); err != nil {
		logger.Errorf("%s: 参数绑定失败: %v", actionType, err)
		return controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的请求体: "+err.Error(), actionType, "请求体绑定失败", req)
	}

	resp, err := c.feedManagementService.UpdatePigBreed(reqCtx, uint32(id), &req)
	if err != nil {
		logger.Errorf("%s: 服务层更新猪品种失败: %v, ID: %d", actionType, err, id)
		if errors.Is(err, service.ErrPigBreedNotFound) {
			return controller.SendErrorWithAudit(ctx, controller.CodeNotFound, err.Error(), actionType, "猪品种不存在", id)
		}
		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "更新猪品种失败: "+err.Error(), actionType, "服务层更新猪品种失败", req)
	}

	logger.Infof("%s: 猪品种更新成功, ID: %d", actionType, resp.ID)
	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "猪品种更新成功", resp, actionType, "猪品种更新成功", resp)
}

// DeletePigBreed godoc
// @Summary      删除猪品种
// @Description  根据ID删除猪品种。
// @Tags         饲料管理-猪
// @Security     BearerAuth
// @Produce      json
// @Param        id path int true "猪品种ID"
// @Success      200 {object} controller.Response "业务码为200代表删除成功"
// @Router       /api/v1/feed/pig-breeds/{id} [delete]
func (c *PigBreedController) DeletePigBreed(ctx echo.Context) error {
	reqCtx, logger := logs.Trace(ctx.Request().Context(), c.ctx, "DeletePigBreed")
	const actionType = "删除猪品种"
	idStr := ctx.Param("id")
	id, err := strconv.ParseUint(idStr, 10, 64)
	if err != nil {
		logger.Errorf("%s: 猪品种ID格式错误: %v, ID: %s", actionType, err, idStr)
		return controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的猪品种ID格式", actionType, "猪品种ID格式错误", idStr)
	}

	err = c.feedManagementService.DeletePigBreed(reqCtx, uint32(id))
	if err != nil {
		logger.Errorf("%s: 服务层删除猪品种失败: %v, ID: %d", actionType, err, id)
		if errors.Is(err, service.ErrPigBreedNotFound) {
			return controller.SendErrorWithAudit(ctx, controller.CodeNotFound, err.Error(), actionType, "猪品种不存在", id)
		}
		if errors.Is(err, service.ErrPigBreedInUse) {
			return controller.SendErrorWithAudit(ctx, controller.CodeConflict, err.Error(), actionType, "猪品种正在被使用", id)
		}
		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "删除猪品种失败: "+err.Error(), actionType, "服务层删除猪品种失败", id)
	}

	logger.Infof("%s: 猪品种删除成功, ID: %d", actionType, id)
	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "猪品种删除成功", nil, actionType, "猪品种删除成功", id)
}

// GetPigBreed godoc
// @Summary      获取猪品种详情
// @Description  根据ID获取单个猪品种的详细信息。
// @Tags         饲料管理-猪
// @Security     BearerAuth
// @Produce      json
// @Param        id path int true "猪品种ID"
// @Success      200 {object} controller.Response{data=dto.PigBreedResponse} "业务码为200代表成功获取"
// @Router       /api/v1/feed/pig-breeds/{id} [get]
func (c *PigBreedController) GetPigBreed(ctx echo.Context) error {
	reqCtx, logger := logs.Trace(ctx.Request().Context(), c.ctx, "GetPigBreed")
	const actionType = "获取猪品种详情"
	idStr := ctx.Param("id")
	id, err := strconv.ParseUint(idStr, 10, 64)
	if err != nil {
		logger.Errorf("%s: 猪品种ID格式错误: %v, ID: %s", actionType, err, idStr)
		return controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的猪品种ID格式", actionType, "猪品种ID格式错误", idStr)
	}

	resp, err := c.feedManagementService.GetPigBreed(reqCtx, uint32(id))
	if err != nil {
		logger.Errorf("%s: 服务层获取猪品种详情失败: %v, ID: %d", actionType, err, id)
		if errors.Is(err, service.ErrPigBreedNotFound) {
			return controller.SendErrorWithAudit(ctx, controller.CodeNotFound, err.Error(), actionType, "猪品种不存在", id)
		}
		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "获取猪品种详情失败: "+err.Error(), actionType, "服务层获取猪品种详情失败", id)
	}

	logger.Infof("%s: 获取猪品种详情成功, ID: %d", actionType, id)
	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取猪品种详情成功", resp, actionType, "获取猪品种详情成功", resp)
}

// ListPigBreeds godoc
// @Summary      获取猪品种列表
// @Description  获取所有猪品种的列表，支持分页和过滤。
// @Tags         饲料管理-猪
// @Security     BearerAuth
// @Produce      json
// @Param        query query dto.ListPigBreedRequest false "查询参数"
// @Success      200 {object} controller.Response{data=dto.ListPigBreedResponse} "业务码为200代表成功获取列表"
// @Router       /api/v1/feed/pig-breeds [get]
func (c *PigBreedController) ListPigBreeds(ctx echo.Context) error {
	reqCtx, logger := logs.Trace(ctx.Request().Context(), c.ctx, "ListPigBreeds")
	const actionType = "获取猪品种列表"
	var req dto.ListPigBreedRequest
	if err := ctx.Bind(&req); err != nil {
		logger.Errorf("%s: 查询参数绑定失败: %v", actionType, err)
		return controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的查询参数: "+err.Error(), actionType, "查询参数绑定失败", req)
	}

	resp, err := c.feedManagementService.ListPigBreeds(reqCtx, &req)
	if err != nil {
		logger.Errorf("%s: 服务层获取猪品种列表失败: %v", actionType, err)
		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "获取猪品种列表失败: "+err.Error(), actionType, "服务层获取猪品种列表失败", nil)
	}

	logger.Infof("%s: 获取猪品种列表成功, 数量: %d", actionType, len(resp.List))
	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取猪品种列表成功", resp, actionType, "获取猪品种列表成功", resp)
}