package handler

import (
	"errors"

	"github.com/gin-gonic/gin"
	"gorm.io/gorm"

	"git.sundynix.cn/Blizzard/sundynix-site/server/internal/model"
	"git.sundynix.cn/Blizzard/sundynix-site/server/internal/pkg/resp"
)

// PostHandler 面向用户端的公开文章接口。
type PostHandler struct {
	db *gorm.DB
}

func NewPostHandler(db *gorm.DB) *PostHandler {
	return &PostHandler{db: db}
}

// List GET /api/posts — 已发布文章列表（不含正文）
func (h *PostHandler) List(c *gin.Context) {
	var items []model.PostListItem
	err := h.db.Model(&model.Post{}).
		Where("published_at IS NOT NULL").
		Order("published_at DESC").
		Find(&items).Error
	if err != nil {
		resp.ServerError(c, "查询失败")
		return
	}
	resp.OK(c, items)
}

// Get GET /api/posts/:slug — 文章详情（含 Markdown 正文）
func (h *PostHandler) Get(c *gin.Context) {
	var post model.Post
	err := h.db.
		Where("slug = ? AND published_at IS NOT NULL", c.Param("slug")).
		First(&post).Error
	if errors.Is(err, gorm.ErrRecordNotFound) {
		resp.NotFound(c, "文章不存在")
		return
	}
	if err != nil {
		resp.ServerError(c, "查询失败")
		return
	}
	resp.OK(c, post)
}