package handler

import (
	"net/http"
	"strconv"

	"aiaa-notification-service/internal/cache"
	"aiaa-notification-service/internal/model"
	"aiaa-notification-service/internal/store"

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

type SourceHandler struct {
	store *store.Store
	cache *cache.Cache
}

func NewSourceHandler(s *store.Store, c *cache.Cache) *SourceHandler {
	return &SourceHandler{store: s, cache: c}
}

type createSourceReq struct {
	Name         string `json:"name"          binding:"required"`
	ParseMode    string `json:"parse_mode"`
	ParsePattern string `json:"parse_pattern"`
	Status       int    `json:"status"`
}

func (h *SourceHandler) Create(c *gin.Context) {
	var req createSourceReq
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	if req.ParseMode == "" {
		req.ParseMode = "json"
	}
	if req.Status == 0 {
		req.Status = 1
	}

	src := &model.Source{
		Name:         req.Name,
		ParseMode:    req.ParseMode,
		ParsePattern: req.ParsePattern,
		Status:       req.Status,
	}
	if err := h.store.CreateSource(c.Request.Context(), src); err != nil {
		c.JSON(http.StatusConflict, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusCreated, src)
}

func (h *SourceHandler) List(c *gin.Context) {
	var page store.PageFilter
	if err := c.ShouldBindQuery(&page); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	page.Normalize()

	sources, total, err := h.store.ListSources(c.Request.Context(), page)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"data": sources, "total": total, "page": page.Page})
}

func (h *SourceHandler) Get(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))
	src, err := h.store.GetSource(c.Request.Context(), id)
	if err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "source not found"})
		return
	}
	c.JSON(http.StatusOK, src)
}

func (h *SourceHandler) Update(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))
	var req createSourceReq
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}

	src := &model.Source{
		Name:         req.Name,
		ParseMode:    req.ParseMode,
		ParsePattern: req.ParsePattern,
		Status:       req.Status,
	}
	if err := h.store.UpdateSource(c.Request.Context(), id, src); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}

	// Invalidate cache
	if h.cache != nil {
		_ = h.cache.InvalidateBySource(c.Request.Context(), id)
	}

	c.JSON(http.StatusOK, gin.H{"ok": true})
}

func (h *SourceHandler) Delete(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))
	if err := h.store.DeleteSource(c.Request.Context(), id); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"ok": true})
}