package application

import (
	"context"
	"testing"
	"time"

	"img_infinite_canvas/internal/domain/design"
	"img_infinite_canvas/internal/infrastructure/memory"
)

func TestAgentThreadsOnlyListsAgentConversationThreads(t *testing.T) {
	ctx := context.Background()
	repo := memory.NewProjectRepository()
	service := NewDesignService(repo, nil, nil, nil, nil)
	now := time.Now()
	project := design.Project{
		ID:           "project-agent-history",
		Title:        "Agent history",
		Status:       design.StatusReady,
		LastThreadID: "thread-remove-background",
		UpdatedAt:    now,
		Messages: []design.Message{
			{ID: "agent-user", Role: "user", Type: "user", Content: "官网设计", ThreadID: "thread-agent", CreatedAt: now.Add(-5 * time.Minute)},
			{ID: "agent-assistant", Role: "assistant", Type: "assistant", Content: "可以继续设计。", ThreadID: "thread-agent", CreatedAt: now.Add(-4 * time.Minute)},
			{ID: "remove-user", Role: "user", Type: "user", Content: "一键移除背景，保留主体完整边缘", ThreadID: "thread-remove-background", Name: "canvas_action", ToolHint: "canvas_action", CreatedAt: now.Add(-3 * time.Minute)},
			{ID: "mockup-tool", Role: "tool", Type: "tool", Content: "生成 mockup 模型", ThreadID: "thread-mockup", Name: "mockup_model", ToolHint: "mockup_model", CreatedAt: now.Add(-2 * time.Minute)},
			{ID: "text-tool", Role: "tool", Type: textExtractionResultMessageType, Content: "文字识别完成", ThreadID: "thread-text", Name: "text_extraction", CreatedAt: now.Add(-time.Minute)},
		},
	}
	if err := repo.Save(ctx, project); err != nil {
		t.Fatal(err)
	}

	threads, err := service.AgentThreads(ctx, project.ID)
	if err != nil {
		t.Fatal(err)
	}
	if len(threads) != 1 {
		t.Fatalf("expected only one agent thread, got %#v", threads)
	}
	if threads[0].AgentThreadID != "thread-agent" || threads[0].Text != "官网设计" {
		t.Fatalf("expected agent thread summary, got %#v", threads[0])
	}
}

func TestAgentThreadsSummaryHidesPromptReferenceDirectives(t *testing.T) {
	ctx := context.Background()
	repo := memory.NewProjectRepository()
	service := NewDesignService(repo, nil, nil, nil, nil)
	now := time.Now()
	project := design.Project{
		ID:           "project-agent-reference-history",
		Title:        "Agent history",
		Status:       design.StatusReady,
		LastThreadID: "thread-agent",
		UpdatedAt:    now,
		Messages: []design.Message{
			{
				ID:        "agent-user",
				Role:      "user",
				Type:      "user",
				Content:   "Reference image 1 (image): http://localhost:19000/canvas-assets/reference.png 灰裤子拆成单件衣服，为了后面电商配图。\nSelected model: GPT Image 2",
				ThreadID:  "thread-agent",
				CreatedAt: now,
			},
		},
	}
	if err := repo.Save(ctx, project); err != nil {
		t.Fatal(err)
	}

	threads, err := service.AgentThreads(ctx, project.ID)
	if err != nil {
		t.Fatal(err)
	}
	if len(threads) != 1 {
		t.Fatalf("expected one agent thread, got %#v", threads)
	}
	if threads[0].Text != "灰裤子拆成单件衣服，为了后面电商配图。" {
		t.Fatalf("expected visible prompt text only, got %q", threads[0].Text)
	}
}

func TestProjectScopedToAgentThreadKeepsOnlyCurrentConversationContext(t *testing.T) {
	now := time.Now()
	project := design.Project{
		ID: "project-agent-context",
		Messages: []design.Message{
			{ID: "old-user", Role: "user", Content: "旧对话", ThreadID: "thread-old", CreatedAt: now.Add(-3 * time.Minute)},
			{ID: "current-user", Role: "user", Content: "当前对话", ThreadID: "thread-current", CreatedAt: now.Add(-2 * time.Minute)},
			{ID: "current-action", Role: "user", Content: "一键移除背景", ThreadID: "thread-current", Name: "canvas_action", ToolHint: "canvas_action", CreatedAt: now.Add(-time.Minute)},
		},
	}

	scoped := projectScopedToAgentThread(project, "thread-current")
	if len(scoped.Messages) != 1 {
		t.Fatalf("expected only current agent message, got %#v", scoped.Messages)
	}
	if scoped.Messages[0].ID != "current-user" {
		t.Fatalf("expected current conversation message, got %#v", scoped.Messages[0])
	}
}