package moderation

import (
	"testing"

	"github.com/stretchr/testify/assert"
	"gorm.io/gorm"
)

// setupTestDB sets up a test database connection
// In a real implementation, this would use a test database or mock
func setupTestDB(t *testing.T) *gorm.DB {
	// This is a mock implementation for testing
	// In a real scenario, you would use a test database or mock
	t.Log("Setting up mock DB connection")
	return nil
}

func TestFlagContent(t *testing.T) {
	// Skip this test as it requires a real database
	t.Skip("Skipping test that requires database connection")

	// Setup
	db := setupTestDB(t)
	service := &ModerationService{db: db}

	// Test cases
	testCases := []struct {
		name           string
		contentID      string
		reason         string
		flaggerAddress string
		expectError    bool
	}{
		{
			name:           "Valid flag",
			contentID:      "content123",
			reason:         "spam",
			flaggerAddress: "0x123456",
			expectError:    false,
		},
		{
			name:           "Empty content ID",
			contentID:      "",
			reason:         "spam",
			flaggerAddress: "0x123456",
			expectError:    true,
		},
		{
			name:           "Empty flagger address",
			contentID:      "content123",
			reason:         "spam",
			flaggerAddress: "",
			expectError:    true,
		},
	}

	// Run tests
	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			flag, err := service.FlagContent(tc.contentID, tc.reason, tc.flaggerAddress)

			if tc.expectError {
				assert.Error(t, err)
			} else {
				assert.NoError(t, err)
				assert.NotNil(t, flag)
				assert.Equal(t, tc.contentID, flag.ContentID)
				assert.Equal(t, tc.reason, flag.Reason)
				assert.Equal(t, tc.flaggerAddress, flag.FlaggerAddress)
			}
		})
	}
}

func TestRunAIModeration(t *testing.T) {
	// Setup
	service := &ModerationService{db: nil} // No DB needed for this test

	// Test cases
	testCases := []struct {
		name          string
		content       *ContentToModerate
		expectFlagged bool
	}{
		{
			name: "Clean content",
			content: &ContentToModerate{
				ContentID:   "content123",
				Text:        "This is a normal and appropriate content.",
				UserAddress: "0x123456",
				IsVerified:  true,
				ContentType: ContentTypePerspective,
			},
			expectFlagged: false,
		},
		{
			name: "Spam content",
			content: &ContentToModerate{
				ContentID:   "content456",
				Text:        "BUY NOW SPAM CONTENT FREE MONEY",
				UserAddress: "0x123456",
				IsVerified:  true,
				ContentType: ContentTypePerspective,
			},
			expectFlagged: true,
		},
		{
			name: "Harmful content",
			content: &ContentToModerate{
				ContentID:   "content789",
				Text:        "This contains harmful and offensive language",
				UserAddress: "0x123456",
				IsVerified:  true,
				ContentType: ContentTypePerspective,
			},
			expectFlagged: true,
		},
	}

	// Run tests
	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			flagged, reason, err := service.RunAIModeration(tc.content)

			assert.NoError(t, err)
			assert.Equal(t, tc.expectFlagged, flagged)
			if flagged {
				assert.NotEmpty(t, reason)
			}
		})
	}
}

func TestCheckEconomicBarrier(t *testing.T) {
	// Setup
	service := &ModerationService{db: nil} // No DB needed for this test

	// Test cases
	testCases := []struct {
		name                string
		userAddress         string
		isVerified          bool
		expectBarrierPassed bool
	}{
		{
			name:                "Verified user",
			userAddress:         "0x123456",
			isVerified:          true,
			expectBarrierPassed: true,
		},
		{
			name:                "Unverified user",
			userAddress:         "0x789012",
			isVerified:          false,
			expectBarrierPassed: false, // Would be false in real implementation requiring payment
		},
	}

	// Run tests
	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			passed, err := service.CheckEconomicBarrier(tc.userAddress, tc.isVerified)

			assert.NoError(t, err)
			assert.Equal(t, tc.expectBarrierPassed, passed)
		})
	}
}