package agentserver

import (
	"strings"
	"testing"
)

const sid = "ses_01a"

func TestSSEScannerChunked(t *testing.T) {
	stream := "retry: 2000\n\n" +
		": ping\n\n" +
		`id: 1` + "\nevent: run.started\ndata: " + `{"seq":1,"type":"run.started","sessionId":"ses_01a","runId":"run_01r","payload":{"provider":"claude","model":"sonnet"}}` + "\n\n" +
		`id: 2` + "\r\nevent: interaction.required\r\ndata: " + `{"seq":2,"type":"interaction.required","sessionId":"ses_01a","runId":"run_01r","payload":{"interactionId":"itx_01i","kind":"approval"}}` + "\r\n\r\n" +
		`id: 3` + "\nevent: file.changed\ndata: " + `{"seq":3,"type":"file.changed","sessionId":"ses_01a","runId":"run_01r","payload":{"fileId":"file_01f","path":"outputs/a.docx"}}` + "\n\n" +
		`id: 4` + "\nevent: message.delta\ndata: " + `{"seq":4,"type":"message.delta","sessionId":"ses_01a","runId":"run_01r","payload":{"text":"hi"}}` + "\n\n"

	var got []string
	s := NewSSEScanner(func(data []byte) {
		for _, r := range ResourcesFromSSEData(data) {
			got = append(got, r.Id+"@"+r.SessionId)
		}
	})
	// 按 7 字节切块喂入，覆盖事件跨块的情况
	for i := 0; i < len(stream); i += 7 {
		end := i + 7
		if end > len(stream) {
			end = len(stream)
		}
		s.Write([]byte(stream[i:end]))
	}
	want := "run_01r@ses_01a,itx_01i@ses_01a,file_01f@ses_01a"
	if strings.Join(got, ",") != want {
		t.Fatalf("got %v, want %s", got, want)
	}
}

func TestResourcesFromResponse(t *testing.T) {
	cases := []struct {
		action Action
		body   string
		want   string
	}{
		{ActionSendMessage, `{"id":"run_01r","sessionId":"ses_01a","status":"queued"}`, "run_01r"},
		{ActionUploadFiles, `[{"id":"file_1","sessionId":"ses_01a"},{"id":"file_2","sessionId":"ses_01a"}]`, "file_1,file_2"},
		{ActionListFiles, `[{"id":"file_3","sessionId":"ses_01a"}]`, "file_3"},
		{ActionEvents, `{"items":[{"seq":1,"type":"run.started","sessionId":"ses_01a","runId":"run_9","payload":{}},` +
			`{"seq":2,"type":"file.changed","sessionId":"ses_OTHER","runId":"run_9","payload":{"fileId":"file_x"}}],"lastSeq":2}`, "run_9"},
		{ActionSessionDetail, `{"id":"ses_01a","activeRunId":"run_7","pendingInteractions":[{"interactionId":"itx_7"}]}`, "run_7,itx_7"},
		{ActionSessionDetail, `{"id":"ses_01a","activeRunId":null,"pendingInteractions":[]}`, ""},
		{ActionInteractions, `[{"interactionId":"itx_8","kind":"question"}]`, "itx_8"},
		{ActionSendMessage, `not json`, ""},
	}
	for _, c := range cases {
		var ids []string
		for _, r := range ResourcesFromResponse(c.action, sid, []byte(c.body)) {
			if r.SessionId != sid {
				t.Errorf("action %v: 资源 %s 的会话为 %s", c.action, r.Id, r.SessionId)
			}
			ids = append(ids, r.Id)
		}
		if strings.Join(ids, ",") != c.want {
			t.Errorf("action %v: got %v, want %s", c.action, ids, c.want)
		}
	}
}

func TestFilterSessionPatch(t *testing.T) {
	b, title, err := filterSessionPatch([]byte(`{"title":"新标题","model":"opus","permissionMode":"auto","profileId":"prf_x","systemPromptAppend":"x"}`))
	if err != nil {
		t.Fatal(err)
	}
	if string(b) != `{"model":"opus","title":"新标题"}` {
		t.Fatalf("过滤结果 %s", b)
	}
	if title == nil || *title != "新标题" {
		t.Fatalf("title %v", title)
	}
	if _, _, err := filterSessionPatch([]byte(`[1]`)); err == nil {
		t.Fatal("非对象应报错")
	}
}