package management

import (
	"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"
	"github.com/gin-gonic/gin"
)

// TransferPigsAcrossBatches godoc
// @Summary      跨猪群调栏
// @Description  将指定数量的猪只从一个猪群的猪栏调动到另一个猪群的猪栏
// @Tags         猪批次管理
// @Accept       json
// @Produce      json
// @Param        sourceBatchID path int true "源猪批次ID"
// @Param        body body dto.TransferPigsAcrossBatchesRequest true "跨群调栏请求信息"
// @Success      200 {object} controller.Response "调栏成功"
// @Router       /api/v1/pig-batches/{sourceBatchID}/transfer-across-batches [post]
func (c *PigBatchController) TransferPigsAcrossBatches(ctx *gin.Context) {
	const action = "跨猪群调栏"
	sourceBatchID, err := strconv.ParseUint(ctx.Param("sourceBatchID"), 10, 32)
	if err != nil {
		controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的源猪批次ID格式", action, "ID格式错误", ctx.Param("sourceBatchID"))
		return
	}

	var req dto.TransferPigsAcrossBatchesRequest
	if err := ctx.ShouldBindJSON(&req); err != nil {
		controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的请求体", action, "请求体绑定失败", req)
		return
	}

	operatorID, err := controller.GetOperatorIDFromContext(ctx)

	err = c.service.TransferPigsAcrossBatches(uint(sourceBatchID), req.DestBatchID, req.FromPenID, req.ToPenID, req.Quantity, operatorID, req.Remarks)
	if err != nil {
		if errors.Is(err, service.ErrPigBatchNotFound) || errors.Is(err, service.ErrPenNotFound) {
			controller.SendErrorWithAudit(ctx, controller.CodeNotFound, err.Error(), action, err.Error(), sourceBatchID)
			return
		} else if errors.Is(err, service.ErrInvalidOperation) || errors.Is(err, service.ErrPigBatchNotActive) || errors.Is(err, service.ErrPenNotAssociatedWithBatch) {
			controller.SendErrorWithAudit(ctx, controller.CodeConflict, err.Error(), action, err.Error(), sourceBatchID)
			return
		}
		c.logger.Errorf("%s: 业务逻辑失败: %v", action, err)
		controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "跨猪群调栏失败", action, err.Error(), sourceBatchID)
		return
	}

	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "调栏成功", nil, action, "调栏成功", sourceBatchID)
}

// TransferPigsWithinBatch godoc
// @Summary      群内调栏
// @Description  将指定数量的猪只在同一个猪群的不同猪栏间调动
// @Tags         猪批次管理
// @Accept       json
// @Produce      json
// @Param        id path int true "猪批次ID"
// @Param        body body dto.TransferPigsWithinBatchRequest true "群内调栏请求信息"
// @Success      200 {object} controller.Response "调栏成功"
// @Router       /api/v1/pig-batches/{id}/transfer-within-batch [post]
func (c *PigBatchController) TransferPigsWithinBatch(ctx *gin.Context) {
	const action = "群内调栏"
	batchID, err := strconv.ParseUint(ctx.Param("id"), 10, 32)
	if err != nil {
		controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的猪批次ID格式", action, "ID格式错误", ctx.Param("id"))
		return
	}

	var req dto.TransferPigsWithinBatchRequest
	if err := ctx.ShouldBindJSON(&req); err != nil {
		controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的请求体", action, "请求体绑定失败", req)
		return
	}

	operatorID, err := controller.GetOperatorIDFromContext(ctx)

	err = c.service.TransferPigsWithinBatch(uint(batchID), req.FromPenID, req.ToPenID, req.Quantity, operatorID, req.Remarks)
	if err != nil {
		if errors.Is(err, service.ErrPigBatchNotFound) || errors.Is(err, service.ErrPenNotFound) {
			controller.SendErrorWithAudit(ctx, controller.CodeNotFound, err.Error(), action, err.Error(), batchID)
			return
		} else if errors.Is(err, service.ErrInvalidOperation) || errors.Is(err, service.ErrPigBatchNotActive) || errors.Is(err, service.ErrPenNotAssociatedWithBatch) {
			controller.SendErrorWithAudit(ctx, controller.CodeConflict, err.Error(), action, err.Error(), batchID)
			return
		}
		c.logger.Errorf("%s: 业务逻辑失败: %v", action, err)
		controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "群内调栏失败", action, err.Error(), batchID)
		return
	}

	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "调栏成功", nil, action, "调栏成功", batchID)
}