package handlers

import (
	"net/http"
	"strconv"

	"giteapm/internal/models"

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

func (h *Handlers) ListEpics(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	limit, _ := strconv.Atoi(c.DefaultQuery("limit", "20"))
	offset := (page - 1) * limit

	filters := make(map[string]interface{})
	if projectID := c.Query("project_id"); projectID != "" {
		if id, err := strconv.ParseUint(projectID, 10, 32); err == nil {
			filters["project_id"] = uint(id)
		}
	}

	epics, total, err := models.ListEpics(offset, limit, filters)
	if err != nil {
		c.JSON(http.StatusInternalServerError, ErrorResponse(500, "获取Epic列表失败"))
		return
	}

	c.JSON(http.StatusOK, PaginatedSuccessResponse(epics, total, page, limit))
}

func (h *Handlers) CreateEpic(c *gin.Context) {
	c.JSON(http.StatusNotImplemented, ErrorResponse(501, "功能暂未实现"))
}

func (h *Handlers) GetEpic(c *gin.Context) {
	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
	if err != nil {
		c.JSON(http.StatusBadRequest, ErrorResponse(400, "无效的Epic ID"))
		return
	}

	epic, err := models.GetEpicByID(uint(id))
	if err != nil {
		c.JSON(http.StatusNotFound, ErrorResponse(404, "Epic不存在"))
		return
	}

	c.JSON(http.StatusOK, SuccessResponse(epic))
}

func (h *Handlers) UpdateEpic(c *gin.Context) {
	c.JSON(http.StatusNotImplemented, ErrorResponse(501, "功能暂未实现"))
}

func (h *Handlers) DeleteEpic(c *gin.Context) {
	c.JSON(http.StatusNotImplemented, ErrorResponse(501, "功能暂未实现"))
}