package main

import (
	"io"
	"log/slog"
	"os"
	"path/filepath"
	"testing"

	"git.yeij.top/AskaEth/Cyrene_v2/internal/channel/adapter"
	"git.yeij.top/AskaEth/Cyrene_v2/internal/logger"
)

func testLog() *slog.Logger {
	return logger.New(logger.Options{Out: io.Discard})
}

// testFactory builds a channelFactory pointing at a temp (absent) channels.json,
// seeded by the env fallback, so the test reads the env the same way boot does.
func testFactory(t *testing.T) *channelFactory {
	t.Helper()
	return &channelFactory{
		path:     filepath.Join(t.TempDir(), "channels.json"),
		fallback: channelAccountsFromEnv(),
		log:      testLog(),
	}
}

func TestBuildChannelAdapters_IncludesKook(t *testing.T) {
	t.Setenv("CHANNEL_KOOK_TOKEN", "kook-secret")
	adapters := buildChannelAdapters(testFactory(t))
	if !hasAdapter(adapters, "kook") {
		t.Fatalf("expected a kook adapter, got %v", names(adapters))
	}
}

func TestBuildChannelAdapters_KookMultiAccount(t *testing.T) {
	t.Setenv("CHANNELS_JSON", `{"kook":[{"id":"conf0","config":{"bot_token":"kook-secret"},"allowUsers":["u-1"],"denyGroups":["g-9"]}]}`)
	adapters := buildChannelAdapters(testFactory(t))
	if !hasAdapter(adapters, "kook:conf0") {
		t.Fatalf("expected a kook:conf0 adapter, got %v", names(adapters))
	}
	// The named adapter must expose its allow/deny lists via Config().
	for _, a := range adapters {
		if a.Name() == "kook:conf0" {
			cfg := a.Config()
			if got, _ := cfg["allowUsers"].([]string); len(got) != 1 || got[0] != "u-1" {
				t.Errorf("allowUsers = %v, want [u-1]", cfg["allowUsers"])
			}
		}
	}
}

// TestBuildChannelAdapters_SkipsEmptyTokenKookFromFile verifies a stale
// channels.json with both a bare empty-token kook and a real token account builds
// only the token account, so the bare "kook" never registers (and never wins a
// bare-name open).
func TestBuildChannelAdapters_SkipsEmptyTokenKookFromFile(t *testing.T) {
	path := filepath.Join(t.TempDir(), "channels.json")
	raw := `{"kook":[
		{"id":"","config":{"base_url":"","bot_token":""}},
		{"id":"3fc8","config":{"bot_token":"real-token"}}
	]}`
	if err := os.WriteFile(path, []byte(raw), 0o600); err != nil {
		t.Fatalf("write: %v", err)
	}
	f := &channelFactory{path: path, fallback: channelAccountsFromEnv(), log: testLog()}
	adapters := buildChannelAdapters(f)
	if hasAdapter(adapters, "kook") {
		t.Fatalf("bare empty-token kook should not be built, got %v", names(adapters))
	}
	if !hasAdapter(adapters, "kook:3fc8") {
		t.Fatalf("expected kook:3fc8, got %v", names(adapters))
	}
}

// TestChannelAccountsFromEnv_NoEmptyTokenPlaceholders verifies the env fallback
// does not synthesize an empty-token kook/telegram/weixin account (only a real
// token produces the account), so a bare placeholder is never registered.
func TestChannelAccountsFromEnv_NoEmptyTokenPlaceholders(t *testing.T) {
	for _, k := range []string{"CHANNEL_KOOK_TOKEN", "CHANNEL_TELEGRAM_BOT_TOKEN", "CHANNEL_WEIXIN_ILINK_BOT_TOKEN", "CHANNELS_JSON"} {
		t.Setenv(k, "")
	}
	env := channelAccountsFromEnv()
	for _, platform := range []string{"kook", "telegram", "weixin-ilink"} {
		if _, ok := env[platform]; ok {
			t.Fatalf("empty-token %s should not be synthesized", platform)
		}
	}
}

// TestChannelAccountsFromEnv_KookPresentWhenTokenSet verifies a set token yields
// the account.
func TestChannelAccountsFromEnv_KookPresentWhenTokenSet(t *testing.T) {
	t.Setenv("CHANNEL_KOOK_TOKEN", "kook-secret")
	env := channelAccountsFromEnv()
	list, ok := env["kook"]
	if !ok || len(list) != 1 {
		t.Fatalf("expected a synthesized kook account, got %+v", env["kook"])
	}
	if list[0].Config["bot_token"] != "kook-secret" {
		t.Fatalf("bot_token = %v, want kook-secret", list[0].Config["bot_token"])
	}
}

func hasAdapter(adapters []adapter.PlatformAdapter, name string) bool {
	for _, a := range adapters {
		if a.Name() == name {
			return true
		}
	}
	return false
}

// TestChannelFactoryBuildFromFile exercises the reload factory against a real
// channels.json file: the factory reads the file (file beats env) and builds a
// named adapter carrying the account's token and black-or-white lists, so a panel
// save → Reload path uses exactly this builder.
func TestChannelFactoryBuildFromFile(t *testing.T) {
	path := filepath.Join(t.TempDir(), "channels.json")
	if err := os.WriteFile(path, []byte(`{"kook":[{"id":"conf0","config":{"bot_token":"bt"},"denyGroups":["g-1"],"allowUsers":["u-1"],"groupMsgPerMin":3,"directMsgPerMin":-1}]}`), 0o600); err != nil {
		t.Fatalf("write channels.json: %v", err)
	}
	f := &channelFactory{path: path, fallback: channelAccountsFromEnv(), log: testLog()}
	adpts, err := f.Build("kook")
	if err != nil {
		t.Fatalf("Build: %v", err)
	}
	if !hasAdapter(adpts, "kook:conf0") {
		t.Fatalf("kook:conf0 not built, got %v", names(adpts))
	}
	for _, a := range adpts {
		if a.Name() != "kook:conf0" {
			continue
		}
		cfg := a.Config()
		if cfg["bot_token"] != "bt" {
			t.Errorf("bot_token = %v, want bt", cfg["bot_token"])
		}
		if got, _ := cfg["denyGroups"].([]string); len(got) != 1 || got[0] != "g-1" {
			t.Errorf("denyGroups = %v, want [g-1]", cfg["denyGroups"])
		}
		if got, _ := cfg["allowUsers"].([]string); len(got) != 1 || got[0] != "u-1" {
			t.Errorf("allowUsers = %v, want [u-1]", cfg["allowUsers"])
		}
		if got, _ := cfg["groupMsgPerMin"].(int); got != 3 {
			t.Errorf("groupMsgPerMin = %v, want 3", cfg["groupMsgPerMin"])
		}
		// directMsgPerMin 同一条链：channels.json 的账号顶层字段 → namedAdapter.Config() →
		// 桥的 gateOptions。断桥这一环就等于「面板/文件配了却没人读」（负值必须原样透出）。
		if got, _ := cfg["directMsgPerMin"].(int); got != -1 {
			t.Errorf("directMsgPerMin = %v, want -1", cfg["directMsgPerMin"])
		}
	}
}

// TestNamedAdapterForwardsWebhook verifies the production wrapper forwards a
// kook webhook-mode adapter's InboundHandler/WebhookPath to the channel bridge,
// so bridge.WebhookHandlers() mounts the KOOK callback route on the gateway. The
// webhook business fields (receive_mode/webhook_path) are sourced from
// channels.json — .env only carries the necessary connection fallback.
func TestNamedAdapterForwardsWebhook(t *testing.T) {
	path := filepath.Join(t.TempDir(), "channels.json")
	raw := `{"kook":[{"id":"conf0","config":{"bot_token":"kook-secret","receive_mode":"webhook","webhook_path":"/webhook/kook"}}]}`
	if err := os.WriteFile(path, []byte(raw), 0o600); err != nil {
		t.Fatalf("write channels.json: %v", err)
	}
	f := &channelFactory{path: path, fallback: channelAccountsFromEnv(), log: testLog()}
	adpts, err := f.Build("kook")
	if err != nil {
		t.Fatalf("Build: %v", err)
	}
	var found *namedAdapter
	for _, a := range adpts {
		if nwa, ok := a.(*namedAdapter); ok && barePlatform(nwa.Name()) == "kook" {
			found = nwa
			break
		}
	}
	if found == nil {
		t.Fatalf("kook named adapter not found, got %v", names(adpts))
	}
	if p := found.WebhookPath(); p != "/webhook/kook" {
		t.Errorf("WebhookPath = %q, want /webhook/kook", p)
	}
	if found.InboundHandler() == nil {
		t.Error("InboundHandler() = nil, want a mounted handler")
	}
}

// TestNamedAdapterNoWebhookInWSMode verifies a ws-mode adapter (all non-webhook
// platforms) does not surface a webhook handler through the wrapper.
func TestNamedAdapterNoWebhookInWSMode(t *testing.T) {
	path := filepath.Join(t.TempDir(), "channels.json")
	raw := `{"kook":[{"id":"conf0","config":{"bot_token":"kook-secret","receive_mode":"ws"}}]}`
	if err := os.WriteFile(path, []byte(raw), 0o600); err != nil {
		t.Fatalf("write channels.json: %v", err)
	}
	f := &channelFactory{path: path, fallback: channelAccountsFromEnv(), log: testLog()}
	adpts, err := f.Build("kook")
	if err != nil {
		t.Fatalf("Build: %v", err)
	}
	for _, a := range adpts {
		if barePlatform(a.Name()) != "kook" {
			continue
		}
		if nwa, ok := a.(*namedAdapter); ok {
			if p := nwa.WebhookPath(); p != "" {
				t.Errorf("ws-mode kook WebhookPath = %q, want empty", p)
			}
		}
	}
}

func names(adapters []adapter.PlatformAdapter) []string {
	out := make([]string, 0, len(adapters))
	for _, a := range adapters {
		out = append(out, a.Name())
	}
	return out
}