package server

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"testing"

	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/bus"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/plugins"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/profiles"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/runmgr"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/runtime"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/settings"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/store"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/tools"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/pkg/extension"
)

type compiledListView struct {
	Manifest struct {
		ID         string `json:"id"`
		Name       string `json:"name"`
		Version    string `json:"version"`
		APIVersion string `json:"apiVersion"`
		Provides   struct {
			Commands []string `json:"commands"`
			Intents  []string `json:"intents"`
		} `json:"provides"`
		Backend struct {
			Mode string `json:"mode"`
		} `json:"backend"`
	} `json:"manifest"`
}

// WP3-I4：/api/plugins 合并编译插件条目——backend.mode=inproc、apiVersion 取
// 扩展面版本、provides 来自注册面摘要；目录插件同名时目录条目权威不重复。
func TestListPluginsMergesCompiled(t *testing.T) {
	dir := t.TempDir()
	st, err := store.OpenSQLite(filepath.Join(dir, "test.db"))
	if err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() { st.Close() })
	b := bus.New()
	reg := tools.NewRegistry()
	reg.RegisterBuiltin()
	setSvc := settings.NewService(st)
	profSvc := profiles.New(st)
	profSvc.EnsureDefault()
	mgr := runmgr.New(st, b, reg, profSvc, setSvc, &runtime.LLMRunner{}, &runtime.SubLLMRunner{}, &runtime.MockRunner{}, &runtime.MockSubagent{})

	pluginsRoot := filepath.Join(dir, "plugins")
	// 目录插件与编译条目同名：目录条目权威，编译合成条目不重复列出。
	if err := os.MkdirAll(filepath.Join(pluginsRoot, "generative-ui"), 0o755); err != nil {
		t.Fatal(err)
	}
	manifest := `{"id":"generative-ui","name":"目录版","version":"1.2.3","apiVersion":"1.0","provides":{}}`
	if err := os.WriteFile(filepath.Join(pluginsRoot, "generative-ui", "plugin.json"), []byte(manifest), 0o644); err != nil {
		t.Fatal(err)
	}
	ph := plugins.New(st, reg, setSvc, pluginsRoot)
	for id, err := range ph.LoadDir() {
		if err != nil {
			t.Fatalf("LoadDir %s: %v", id, err)
		}
	}

	srv := New(st, mgr, reg, profSvc, setSvc, ph)
	srv.Auth = NewAuthenticator(st, true)
	srv.CompiledPlugins = []CompiledPlugin{
		{ID: "rdm", Commands: []string{"rdm.ingest", "rdm.inspect.capabilities"}, Intents: []string{"rdm.write-proposal"}},
		{ID: "generative-ui", Commands: []string{"generative-ui.present"}},
	}
	h := srv.Handler()
	key, err := st.CreateAPIKey("alice", "e2e")
	if err != nil {
		t.Fatal(err)
	}

	req := httptest.NewRequest(http.MethodGet, "/api/plugins", nil)
	req.Header.Set("Authorization", "Bearer "+key)
	rec := httptest.NewRecorder()
	h.ServeHTTP(rec, req)
	if rec.Code != http.StatusOK {
		t.Fatalf("status %d: %s", rec.Code, rec.Body.String())
	}
	var list []compiledListView
	if err := json.Unmarshal(rec.Body.Bytes(), &list); err != nil {
		t.Fatal(err)
	}
	var rdm, genui *compiledListView
	genuiCount := 0
	for i := range list {
		switch list[i].Manifest.ID {
		case "rdm":
			rdm = &list[i]
		case "generative-ui":
			genui = &list[i]
			genuiCount++
		}
	}
	if rdm == nil {
		t.Fatalf("compiled rdm entry missing: %s", rec.Body.String())
	}
	if rdm.Manifest.Name != "rdm" || rdm.Manifest.Backend.Mode != "inproc" {
		t.Fatalf("rdm entry = %+v", rdm.Manifest)
	}
	if rdm.Manifest.APIVersion != extension.SurfaceVersion {
		t.Fatalf("rdm apiVersion = %q, want %q", rdm.Manifest.APIVersion, extension.SurfaceVersion)
	}
	if len(rdm.Manifest.Provides.Commands) != 2 || len(rdm.Manifest.Provides.Intents) != 1 {
		t.Fatalf("rdm provides = %+v", rdm.Manifest.Provides)
	}
	if genuiCount != 1 || genui == nil {
		t.Fatalf("generative-ui listed %d times", genuiCount)
	}
	// 目录条目权威：同名编译条目不重复、manifest 不被合成版覆盖。
	if genui.Manifest.Name != "目录版" || genui.Manifest.Version != "1.2.3" || genui.Manifest.Backend.Mode != "" {
		t.Fatalf("genui entry = %+v", genui.Manifest)
	}
}