package controller

import (
	"encoding/json"
	"net/http"

	"github.com/mhsanaei/3x-ui/v3/internal/web/entity"
	"github.com/mhsanaei/3x-ui/v3/internal/web/service/probenotify"

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

// Item 7 B6: the notification settings surface — the notify_* block
// (offline grace, traffic step, expiry window, login alerts, the
// webhook channel and the two message templates) and a test send.
// Like the rest of the probe surfaces these endpoints answer in the
// panel's Msg envelope and take effect immediately; validation
// refusals are operator-facing text, shown verbatim. (The cf-probe
// retirement coverage card that originally rode this payload was
// removed in V2.0.1 ⑥ — the checklist lives in the operator docs.)

type ProbeNotifyController struct{}

func NewProbeNotifyController(g *gin.RouterGroup) *ProbeNotifyController {
	pc := &ProbeNotifyController{}
	g.GET("/probe/notify", pc.get)
	g.PUT("/probe/notify", pc.put)
	g.POST("/probe/notify/test", pc.test)
	return pc
}

type probeNotifyPayload struct {
	Settings probenotify.SettingsView `json:"settings"`
}

func (pc *ProbeNotifyController) get(c *gin.Context) {
	jsonObj(c, probeNotifyPayload{
		Settings: probenotify.GetSettings(),
	}, nil)
}

func (pc *ProbeNotifyController) put(c *gin.Context) {
	var body map[string]json.RawMessage
	if err := c.ShouldBindJSON(&body); err != nil {
		c.JSON(http.StatusOK, entity.Msg{Success: false, Msg: "请求格式不对"})
		return
	}
	if err := probenotify.SaveSettings(body); err != nil {
		// SaveSettings validates everything before writing anything;
		// its errors are the operator's answer (a range, a malformed
		// header block), not machine faults.
		c.JSON(http.StatusOK, entity.Msg{Success: false, Msg: err.Error()})
		return
	}
	// Answer with the fresh view, like the GET: the tab re-renders
	// the channel status and secret-set flags from it.
	jsonObj(c, probeNotifyPayload{
		Settings: probenotify.GetSettings(),
	}, nil)
}

func (pc *ProbeNotifyController) test(c *gin.Context) {
	sent, err := probenotify.Test()
	if err != nil {
		c.JSON(http.StatusOK, entity.Msg{Success: false, Msg: err.Error()})
		return
	}
	jsonObj(c, gin.H{"sent": sent}, nil)
}