package v1

import (
	"context"
	"slices"
	"strconv"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/snowykami/neo-blog/internal/ctxutils"
	"github.com/snowykami/neo-blog/internal/dto"
	"github.com/snowykami/neo-blog/internal/service"
	"github.com/snowykami/neo-blog/pkg/constant"
	"github.com/snowykami/neo-blog/pkg/errs"
	"github.com/snowykami/neo-blog/pkg/resps"
)

type CommentController struct {
	service *service.CommentService
}

func NewCommentController() *CommentController {
	return &CommentController{
		service: service.NewCommentService(),
	}
}

func (cc *CommentController) CreateComment(ctx context.Context, c *app.RequestContext) {
	var req dto.CreateCommentReq
	if err := c.BindAndValidate(&req); err != nil {
		resps.BadRequest(c, err.Error())
		return
	}
	err := cc.service.CreateComment(ctx, &req)
	if err != nil {
		serviceErr := errs.AsServiceError(err)
		resps.Custom(c, serviceErr.Code, serviceErr.Message, nil)
		return
	}
	resps.Ok(c, resps.Success, nil)
}

func (cc *CommentController) UpdateComment(ctx context.Context, c *app.RequestContext) {
	var req dto.UpdateCommentReq
	if err := c.BindAndValidate(&req); err != nil {
		resps.BadRequest(c, resps.ErrParamInvalid)
		return
	}
	id := c.Param("id")
	idInt, err := strconv.Atoi(id)
	if err != nil {
		resps.BadRequest(c, resps.ErrParamInvalid)
		return
	}
	req.CommentID = uint(idInt)

	err = cc.service.UpdateComment(ctx, &req)
	if err != nil {
		serviceErr := errs.AsServiceError(err)
		resps.Custom(c, serviceErr.Code, serviceErr.Message, nil)
		return
	}
	resps.Ok(c, resps.Success, nil)
}

func (cc *CommentController) DeleteComment(ctx context.Context, c *app.RequestContext) {
	id := c.Param("id")
	err := cc.service.DeleteComment(ctx, id)
	if err != nil {
		serviceErr := errs.AsServiceError(err)
		resps.Custom(c, serviceErr.Code, serviceErr.Message, nil)
		return
	}
	resps.Ok(c, resps.Success, nil)
}

func (cc *CommentController) GetComment(ctx context.Context, c *app.RequestContext) {
	id := c.Param("id")
	if id == "" {
		resps.BadRequest(c, resps.ErrParamInvalid)
		return
	}
	resp, err := cc.service.GetComment(ctx, id)
	if err != nil {
		serviceErr := errs.AsServiceError(err)
		resps.Custom(c, serviceErr.Code, serviceErr.Message, nil)
		return
	}
	resps.Ok(c, resps.Success, resp)
}

func (cc *CommentController) GetCommentList(ctx context.Context, c *app.RequestContext) {
	pagination := ctxutils.GetPaginationParams(c)
	if pagination.OrderBy == "" {
		pagination.OrderBy = constant.OrderByUpdatedAt
	}
	if pagination.OrderBy != "" && !slices.Contains(constant.OrderByEnumComment, pagination.OrderBy) {
		resps.BadRequest(c, "无效的排序字段")
		return
	}
	targetID, err := strconv.Atoi(c.Query("target_id"))
	if err != nil {
		resps.BadRequest(c, "无效的 target_id")
		return
	}

	req := dto.GetCommentListReq{
		Desc:     pagination.Desc,
		OrderBy:  pagination.OrderBy,
		Page:     pagination.Page,
		Size:     pagination.Size,
		TargetID:  uint(targetID),
		TargetType: c.Query("target_type"),
	}
	resp, err := cc.service.GetCommentList(ctx, &req)
	if err != nil {
		serviceErr := errs.AsServiceError(err)
		resps.Custom(c, serviceErr.Code, serviceErr.Message, nil)
		return
	}
	resps.Ok(c, resps.Success, resp)
}

func (cc *CommentController) ReactComment(ctx context.Context, c *app.RequestContext) {}