package index

import (
	"context"
	"testing"
	"time"

	"es-demo/client"
	"es-demo/config"
)

// setupIntegrationTest loads configuration and creates a client for integration tests.
func setupIntegrationTest(t *testing.T) *client.Client {
	t.Helper()

	// Load configuration from project root
	if err := config.Load("../../.env"); err != nil {
		t.Logf("warning: failed to load .env file: %v", err)
	}

	cfg := &client.Config{
		Endpoint:  config.Endpoint,
		Region:    config.Region,
		AccessKey: config.AccessKey,
		SecretKey: config.SecretKey,
	}

	c, err := client.NewClient(cfg)
	if err != nil {
		t.Fatalf("failed to create client: %v", err)
	}

	return c
}

// TestTemplateIntegration tests complete template lifecycle
func TestTemplateIntegration(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping integration test in short mode")
	}

	c := setupIntegrationTest(t)

	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
	defer cancel()

	templateName := "test-template-integration"

	// Cleanup before test
	_ = DeleteTemplate(ctx, c, templateName)

	// Test 1: Create template
	template := &Template{
		IndexPatterns: []string{"test-integration-*"},
		Settings: map[string]any{
			"number_of_shards":   1,
			"number_of_replicas": 0,
		},
		Mappings: map[string]any{
			"properties": map[string]any{
				"timestamp": map[string]any{
					"type": "date",
				},
				"message": map[string]any{
					"type": "text",
				},
			},
		},
		Priority: 100,
	}

	t.Run("PutTemplate", func(t *testing.T) {
		err := PutTemplate(ctx, c, templateName, template)
		if err != nil {
			t.Fatalf("PutTemplate() error = %v", err)
		}
		t.Log("Template created successfully")
	})

	// Test 2: Get template
	t.Run("GetTemplate", func(t *testing.T) {
		retrieved, err := GetTemplate(ctx, c, templateName)
		if err != nil {
			t.Fatalf("GetTemplate() error = %v", err)
		}

		if len(retrieved.IndexPatterns) != len(template.IndexPatterns) {
			t.Errorf("IndexPatterns = %v, want %v", retrieved.IndexPatterns, template.IndexPatterns)
		}

		if retrieved.Priority != template.Priority {
			t.Errorf("Priority = %d, want %d", retrieved.Priority, template.Priority)
		}

		t.Logf("Retrieved template: %d index patterns, priority %d", len(retrieved.IndexPatterns), retrieved.Priority)
	})

	// Test 3: Update template
	t.Run("UpdateTemplate", func(t *testing.T) {
		template.Priority = 200
		err := PutTemplate(ctx, c, templateName, template)
		if err != nil {
			t.Fatalf("PutTemplate() (update) error = %v", err)
		}

		retrieved, err := GetTemplate(ctx, c, templateName)
		if err != nil {
			t.Fatalf("GetTemplate() error = %v", err)
		}

		if retrieved.Priority != 200 {
			t.Errorf("Updated Priority = %d, want 200", retrieved.Priority)
		}

		t.Log("Template updated successfully")
	})

	// Test 4: List templates
	t.Run("ListTemplates", func(t *testing.T) {
		templates, err := ListTemplates(ctx, c)
		if err != nil {
			t.Fatalf("ListTemplates() error = %v", err)
		}

		if _, exists := templates[templateName]; !exists {
			t.Errorf("Template %q not found in list", templateName)
		}

		t.Logf("Found %d templates", len(templates))
	})

	// Test 5: Delete template
	t.Run("DeleteTemplate", func(t *testing.T) {
		err := DeleteTemplate(ctx, c, templateName)
		if err != nil {
			t.Fatalf("DeleteTemplate() error = %v", err)
		}

		// Verify deletion
		_, err = GetTemplate(ctx, c, templateName)
		if err == nil {
			t.Error("GetTemplate() should return error after deletion")
		}

		t.Log("Template deleted successfully")
	})
}

func TestPutTemplate(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping integration test in short mode")
	}

	c := setupIntegrationTest(t)

	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	templateName := "test-put-template"
	defer func() {
		_ = DeleteTemplate(context.Background(), c, templateName)
	}()

	template := &Template{
		IndexPatterns: []string{"test-put-*"},
		Settings: map[string]any{
			"number_of_shards":   1,
			"number_of_replicas": 0,
		},
		Mappings: map[string]any{
			"properties": map[string]any{
				"timestamp": map[string]any{
					"type": "date",
				},
			},
		},
	}

	err := PutTemplate(ctx, c, templateName, template)
	if err != nil {
		t.Fatalf("PutTemplate() error = %v", err)
	}

	t.Log("PutTemplate succeeded")
}

func TestGetTemplate(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping integration test in short mode")
	}

	c := setupIntegrationTest(t)

	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	templateName := "test-get-template"

	// Create a template first
	template := &Template{
		IndexPatterns: []string{"test-get-*"},
		Settings: map[string]any{
			"number_of_shards": 1,
		},
	}

	err := PutTemplate(ctx, c, templateName, template)
	if err != nil {
		t.Fatalf("setup: PutTemplate() error = %v", err)
	}

	defer func() {
		_ = DeleteTemplate(context.Background(), c, templateName)
	}()

	// Test getting the template
	retrieved, err := GetTemplate(ctx, c, templateName)
	if err != nil {
		t.Fatalf("GetTemplate() error = %v", err)
	}

	if len(retrieved.IndexPatterns) == 0 {
		t.Error("GetTemplate() returned empty index patterns")
	}

	t.Logf("GetTemplate succeeded: %v", retrieved.IndexPatterns)
}

func TestDeleteTemplate(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping integration test in short mode")
	}

	c := setupIntegrationTest(t)

	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	templateName := "test-delete-template"

	// Create a template
	template := &Template{
		IndexPatterns: []string{"test-delete-*"},
	}

	err := PutTemplate(ctx, c, templateName, template)
	if err != nil {
		t.Fatalf("setup: PutTemplate() error = %v", err)
	}

	// Test deletion
	err = DeleteTemplate(ctx, c, templateName)
	if err != nil {
		t.Fatalf("DeleteTemplate() error = %v", err)
	}

	t.Log("DeleteTemplate succeeded")
}

func TestListTemplates(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping integration test in short mode")
	}

	c := setupIntegrationTest(t)

	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	templates, err := ListTemplates(ctx, c)
	if err != nil {
		t.Fatalf("ListTemplates() error = %v", err)
	}

	if templates == nil {
		t.Error("ListTemplates() returned nil")
	}

	t.Logf("ListTemplates succeeded: found %d templates", len(templates))
}