package docDB

import (
	"os"
	"strings"
	"testing"

	"apigo.cc/go/log"
	"apigo.cc/go/tableDB"
)

func TestDocDB(t *testing.T) {
	logger := log.DefaultLogger
	dbFile := "test_doc.db"
	os.Remove(dbFile)
	defer os.Remove(dbFile)
	os.RemoveAll("./test_docs")
	defer os.RemoveAll("./test_docs")

	unauthorizedDB := tableDB.GetDB("sqlite://"+dbFile, logger)
	
	// 使用新的 GetDB 入口，内部完成系统表初始化与业务表初始化
	docDBInst := GetDB(unauthorizedDB, "./test_docs")
	app := docDBInst.Auth("user1")

	var createdCalled, updatedCalled, removedCalled bool
	docDBInst.OnCreatedDoc(func(doc *Document) { createdCalled = true })
	docDBInst.OnUpdatedDoc(func(doc *Document) { updatedCalled = true })
	docDBInst.OnRemoved(func(id string) { removedCalled = true })

	// 1. 测试 SetDoc (创建)
	doc1 := &Document{
		Path:        "/test/doc1.md",
		Title:       "Test Doc",
		TextContent: "# Header 1\nContent 1",
		Type:        "markdown",
	}

	err := app.SetDoc(doc1)
	if err != nil {
		t.Fatalf("SetDoc failed: %v", err)
	}

	if doc1.Version != 1 {
		t.Fatalf("Expected version 1, got %d", doc1.Version)
	}
	if !createdCalled {
		t.Error("OnCreatedDoc event not triggered")
	}

	// 2. 测试 Get
	d, err := app.Get(doc1.ID)
	if err != nil || d == nil {
		t.Fatalf("Get failed: %v", err)
	}
	if d.Title != "Test Doc" {
		t.Fatalf("Expected title 'Test Doc', got %s", d.Title)
	}

	// 3. 测试 SetDoc (更新内容, 提升版本并存入历史)
	doc1.TextContent = "# Header 1\nUpdated Content"
	err = app.SetDoc(doc1)
	if err != nil {
		t.Fatalf("Update SetDoc failed: %v", err)
	}
	if doc1.Version != 2 {
		t.Fatalf("Expected version 2 after content update, got %d", doc1.Version)
	}
	if !updatedCalled {
		t.Error("OnUpdatedDoc event not triggered")
	}

	// 4. 测试 GetByVersion
	hist, err := app.GetByVersion(doc1.ID, 1)
	if err != nil || hist == nil {
		t.Fatalf("GetByVersion(1) failed: %v", err)
	}
	if !strings.Contains(hist.TextContent, "Content 1") {
		t.Fatalf("Expected 'Content 1' in history version 1, got %s", hist.TextContent)
	}

	curr, _ := app.GetByVersion(doc1.ID, 2)
	if curr.Version != 2 || !strings.Contains(curr.TextContent, "Updated Content") {
		t.Fatalf("Expected version 2 content, got version %d", curr.Version)
	}

	// 5. 测试 ExtractToC 代码块识别
	docWithCode := &Document{
		Path: "/test/code.md",
		TextContent: "# H1\n```markdown\n# This is not a header\n```\n# H2",
		Type: "markdown",
	}
	_ = app.SetDoc(docWithCode)
	if len(docWithCode.ToC) != 2 {
		t.Fatalf("Expected 2 headers in ToC, got %d", len(docWithCode.ToC))
	}
	if docWithCode.ToC[1].Title != "H2" {
		t.Fatalf("Expected second header to be 'H2', got %s", docWithCode.ToC[1].Title)
	}

	// 6. 测试 SetMeta (更新元数据, 不提升版本)
	err = app.SetMeta(doc1.ID, map[string]any{"title": "New Title"})
	if err != nil {
		t.Fatalf("SetMeta failed: %v", err)
	}

	d2, _ := app.Get(doc1.ID)
	if d2.Title != "New Title" {
		t.Fatalf("Expected title 'New Title', got %s", d2.Title)
	}
	if d2.Version != 2 {
		t.Fatalf("Expected version 2 after meta update, got %d", d2.Version)
	}

	// 7. 测试 Remove
	err = app.Remove(doc1.ID)
	if err != nil {
		t.Fatalf("Remove failed: %v", err)
	}
	if !removedCalled {
		t.Error("OnRemoved event not triggered")
	}
}

func BenchmarkExtractToC(b *testing.B) {
	content := "# H1\n## H1.1\n### H1.1.1\n" + strings.Repeat("Some content\n", 100) + "# H2\n## H2.1\n"
	for i := 0; i < b.N; i++ {
		_ = ExtractToC(content)
	}
}