package main

import (
	"encoding/json"
	"strings"
	"testing"

	"arcrun-rag/collector/supervisor"
)

// t26：暱稱 > email > 未設定（leo 07-24 拍板：CF 全程隱形，這條邏輯不該提到 cypher/CF）。
func TestConnectionStatusLabel(t *testing.T) {
	cases := []struct {
		name         string
		instanceName string
		email        string
		want         string
	}{
		{"暱稱優先於email", "我的書房", "leo21c@gmail.com", "連線中：我的書房"},
		{"無暱稱退回email", "", "leo21c@gmail.com", "連線中：leo21c@gmail.com"},
		{"兩者皆空顯示未設定", "", "", "連線中：未設定"},
	}
	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {
			got := connectionStatusLabel(c.instanceName, c.email)
			if got != c.want {
				t.Errorf("connectionStatusLabel(%q, %q) = %q, want %q", c.instanceName, c.email, got, c.want)
			}
		})
	}
}

func TestShortCypherHost(t *testing.T) {
	cases := []struct {
		name string
		in   string
		want string
	}{
		{"完整URL取host", "https://arcrun-cypher-executor.someacct.workers.dev/path", "arcrun-cypher-executor.someacct.workers.dev"},
		{"空字串回空字串", "", ""},
		{"無法解析出host則原樣回傳", "not-a-url", "not-a-url"},
	}
	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {
			got := shortCypherHost(c.in)
			if got != c.want {
				t.Errorf("shortCypherHost(%q) = %q, want %q", c.in, got, c.want)
			}
		})
	}
}

// config 序列化含新欄（email／instance_name）——t26 施工面一驗收項。
func TestDirectConfigJSONRoundTrip(t *testing.T) {
	c := &directConfig{
		CypherURL:    "https://example.workers.dev",
		Namespace:    "demo",
		Email:        "leo21c@gmail.com",
		InstanceName: "我的書房",
	}
	data, err := json.Marshal(c)
	if err != nil {
		t.Fatalf("marshal 失敗：%v", err)
	}
	s := string(data)
	if !strings.Contains(s, `"email":"leo21c@gmail.com"`) {
		t.Errorf("序列化結果缺 email 欄：%s", s)
	}
	if !strings.Contains(s, `"instance_name":"我的書房"`) {
		t.Errorf("序列化結果缺 instance_name 欄：%s", s)
	}

	var back directConfig
	if err := json.Unmarshal(data, &back); err != nil {
		t.Fatalf("unmarshal 失敗：%v", err)
	}
	if back.Email != c.Email || back.InstanceName != c.InstanceName {
		t.Errorf("round-trip 不一致：got email=%q instance_name=%q", back.Email, back.InstanceName)
	}
}

// 暱稱空時 config JSON 不應寫出 instance_name 欄（omitempty；對齊面二 installer 端「空就不寫欄位」的約定）。
func TestDirectConfigJSONOmitsEmptyInstanceName(t *testing.T) {
	c := &directConfig{
		CypherURL: "https://example.workers.dev",
		Namespace: "demo",
		Email:     "leo21c@gmail.com",
	}
	data, err := json.Marshal(c)
	if err != nil {
		t.Fatalf("marshal 失敗：%v", err)
	}
	if strings.Contains(string(data), "instance_name") {
		t.Errorf("暱稱空時不該序列化出 instance_name 欄：%s", data)
	}
}

// ── t86：instanceChanged ─────────────────────────────────────────────────────

func TestInstanceChanged(t *testing.T) {
	cases := []struct {
		name   string
		oldURL string
		newURL string
		want   bool
	}{
		{
			"同 host 同實例改密碼不觸發清空",
			"https://arcrun-cypher-executor.youlin.workers.dev",
			"https://arcrun-cypher-executor.youlin.workers.dev",
			false,
		},
		{
			"不同 host 換實例觸發清空",
			"https://arcrun-cypher-executor.youlin.workers.dev",
			"https://arcrun-cypher-executor.geek6688.workers.dev",
			true,
		},
		{
			"舊 URL 空（首次設定）不觸發清空",
			"",
			"https://arcrun-cypher-executor.geek6688.workers.dev",
			false,
		},
		{
			"新 URL 空（異常值）不觸發清空",
			"https://arcrun-cypher-executor.youlin.workers.dev",
			"",
			false,
		},
	}
	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {
			got := instanceChanged(c.oldURL, c.newURL)
			if got != c.want {
				t.Errorf("instanceChanged(%q, %q) = %v, want %v", c.oldURL, c.newURL, got, c.want)
			}
		})
	}
}

// t86：換實例後 applyRemoteConfig 清空資料夾清單
func TestApplyRemoteConfigClearsFoldersOnInstanceSwitch(t *testing.T) {
	cfg := &directConfig{
		CypherURL:    "https://arcrun-cypher-executor.youlin.workers.dev",
		Namespace:    "youlin",
		WatchFolder:  "/Users/youlin/KnowledgeBase",
		WatchFolders: []string{"/Users/youlin/KnowledgeBase", "/Users/youlin/Finance"},
	}
	r := &daemonConfigResp{}
	r.Config.CypherURL = "https://arcrun-cypher-executor.geek6688.workers.dev"
	r.Config.Namespace = "geek6688"

	switched := applyRemoteConfig(cfg, r)

	if !switched {
		t.Error("換了不同 host 應回傳 switched=true")
	}
	if cfg.WatchFolder != "" {
		t.Errorf("換實例後 WatchFolder 應清空，got %q", cfg.WatchFolder)
	}
	if len(cfg.WatchFolders) != 0 {
		t.Errorf("換實例後 WatchFolders 應清空，got %v", cfg.WatchFolders)
	}
}

// t86：同實例改密碼不清空資料夾清單
func TestApplyRemoteConfigKeepsFoldersOnSameInstance(t *testing.T) {
	cfg := &directConfig{
		CypherURL:    "https://arcrun-cypher-executor.youlin.workers.dev",
		Namespace:    "youlin",
		WatchFolder:  "/Users/youlin/KnowledgeBase",
		WatchFolders: []string{"/Users/youlin/KnowledgeBase"},
	}
	r := &daemonConfigResp{}
	r.Config.CypherURL = "https://arcrun-cypher-executor.youlin.workers.dev"
	r.Config.Namespace = "youlin"

	switched := applyRemoteConfig(cfg, r)

	if switched {
		t.Error("同 host 不應回傳 switched=true")
	}
	if cfg.WatchFolder == "" || len(cfg.WatchFolders) == 0 {
		t.Error("同實例不應清空資料夾清單")
	}
}

// ── t91/t92：buildStatusLabel 與 syncStatusLabel 邏輯 ──────────────────────

// TestBuildStatusLabelNormal：看守中（無 extractor 設定）→ 正常「看守中」文案。
func TestBuildStatusLabelNormal(t *testing.T) {
	s := supervisor.Status{State: supervisor.StateWatching}
	got := buildStatusLabel(s, traySyncStatus{ExtractorOK: true}, "")
	if !strings.HasPrefix(got, "看守中") {
		t.Errorf("got=%q，應以「看守中」開頭", got)
	}
	if strings.Contains(got, "萃取") {
		t.Errorf("無 extractor 時不應有萃取字眼，got=%q", got)
	}
}

// TestBuildStatusLabelExtractorFail：extractor 預檢失敗 → 換成「⚠ 萃取引擎未就緒：」。
func TestBuildStatusLabelExtractorFail(t *testing.T) {
	s := supervisor.Status{State: supervisor.StateWatching}
	sync := traySyncStatus{ExtractorOK: false, ExtractorError: "找不到 Claude 指令"}
	got := buildStatusLabel(s, sync, "claude")
	if !strings.HasPrefix(got, "⚠ 萃取引擎未就緒：") {
		t.Errorf("extractor 失敗時應顯示警告，got=%q", got)
	}
	if !strings.Contains(got, "找不到 Claude 指令") {
		t.Errorf("應包含錯誤原因，got=%q", got)
	}
}

// TestBuildStatusLabelExtractorOKWithCount：extractor 就緒且有萃取成功數 → 追加「已萃 N 檔」。
func TestBuildStatusLabelExtractorOKWithCount(t *testing.T) {
	s := supervisor.Status{State: supervisor.StateWatching}
	sync := traySyncStatus{ExtractorOK: true, ExtractedOK: 5}
	got := buildStatusLabel(s, sync, "claude")
	if !strings.Contains(got, "已萃 5 檔") {
		t.Errorf("should show 已萃 5 檔，got=%q", got)
	}
}

// TestBuildStatusLabelStopped：已暫停狀態不受 sync status 影響。
func TestBuildStatusLabelStopped(t *testing.T) {
	s := supervisor.Status{State: supervisor.StateStopped}
	sync := traySyncStatus{ExtractorOK: false, ExtractorError: "任何錯誤"}
	got := buildStatusLabel(s, sync, "claude")
	if got != "已暫停" {
		t.Errorf("已暫停狀態應回「已暫停」，got=%q", got)
	}
}

// TestSyncNowSignalPath：syncNowSignalPath 回傳以 sync-now 結尾的路徑（t98）。
// tray 寫這個路徑，collector 從 manifest 同目錄讀——路徑語意必須一致。
func TestSyncNowSignalPath(t *testing.T) {
	p := syncNowSignalPath()
	if !strings.HasSuffix(p, "sync-now") {
		t.Errorf("syncNowSignalPath()=%q，應以 'sync-now' 結尾", p)
	}
	// 應該住在 appDir() 底下
	if !strings.HasPrefix(p, appDir()) {
		t.Errorf("syncNowSignalPath()=%q 應在 appDir()=%q 底下", p, appDir())
	}
}

// TestDirectConfigPreservesClaudeBin：config JSON round-trip 保留 claude_bin 欄位（t92 回寫驗收）。
func TestDirectConfigPreservesClaudeBin(t *testing.T) {
	c := &directConfig{
		CypherURL: "https://example.workers.dev",
		Namespace: "demo",
		ClaudeBin: "/opt/homebrew/bin/claude",
	}
	data, err := json.Marshal(c)
	if err != nil {
		t.Fatalf("marshal 失敗：%v", err)
	}
	if !strings.Contains(string(data), `"claude_bin":"/opt/homebrew/bin/claude"`) {
		t.Errorf("序列化結果缺 claude_bin 欄：%s", data)
	}
	var back directConfig
	if err := json.Unmarshal(data, &back); err != nil {
		t.Fatalf("unmarshal 失敗：%v", err)
	}
	if back.ClaudeBin != c.ClaudeBin {
		t.Errorf("round-trip 不一致：got %q, want %q", back.ClaudeBin, c.ClaudeBin)
	}
}