<?php

declare(strict_types=1);

use App\Framework\Design\Service\TokenAnalyzer;
use App\Framework\Design\ValueObjects\CustomProperty;
use App\Framework\Design\ValueObjects\DesignToken;
use App\Framework\Design\ValueObjects\TokenCategory;

describe('TokenAnalyzer', function () {

    beforeEach(function () {
        $this->analyzer = new TokenAnalyzer();
    });

    it('categorizes design tokens correctly', function () {
        $customProperties = [
            new CustomProperty('primary-color', '#3b82f6'),
            new CustomProperty('text-base', '16px'),
            new CustomProperty('spacing-md', '1rem'),
            new CustomProperty('border-radius', '4px'),
            new CustomProperty('font-weight-bold', '700'),
            new CustomProperty('shadow-lg', '0 10px 15px -3px rgba(0, 0, 0, 0.1)'),
            new CustomProperty('duration-fast', '150ms'),
        ];

        $tokens = $this->analyzer->categorizeTokens($customProperties);

        expect($tokens)->toHaveCount(7);

        // Check categories
        $categories = array_map(fn ($token) => $token->category, $tokens);
        expect($categories)->toContain(TokenCategory::COLOR);
        expect($categories)->toContain(TokenCategory::TYPOGRAPHY);
        expect($categories)->toContain(TokenCategory::SPACING);
        expect($categories)->toContain(TokenCategory::BORDER);
        expect($categories)->toContain(TokenCategory::SHADOW);
        expect($categories)->toContain(TokenCategory::ANIMATION);
    });

    it('analyzes token naming patterns', function () {
        $customProperties = [
            new CustomProperty('color-primary-500', '#3b82f6'),    // Design system naming
            new CustomProperty('spacing-xs', '0.25rem'),           // Descriptive naming
            new CustomProperty('fontSize', '16px'),                // camelCase (inconsistent)
            new CustomProperty('main-color', '#1f2937'),           // Simple naming
        ];

        $analysis = $this->analyzer->analyzeNamingPatterns($customProperties);

        expect($analysis['patterns'])->toHaveKey('design-system');
        expect($analysis['patterns'])->toHaveKey('descriptive');
        expect($analysis['patterns'])->toHaveKey('camelCase');
        expect($analysis['patterns'])->toHaveKey('simple');

        expect($analysis['consistency_score'])->toBeLessThan(1.0); // Mixed patterns
        expect($analysis['recommendations'])->not->toBeEmpty();
    });

    it('detects token relationships', function () {
        $customProperties = [
            new CustomProperty('color-primary-100', '#dbeafe'),
            new CustomProperty('color-primary-500', '#3b82f6'),
            new CustomProperty('color-primary-900', '#1e3a8a'),
            new CustomProperty('spacing-sm', '0.5rem'),
            new CustomProperty('spacing-md', '1rem'),
            new CustomProperty('spacing-lg', '1.5rem'),
        ];

        $relationships = $this->analyzer->detectTokenRelationships($customProperties);

        expect($relationships)->toHaveKey('color-primary');
        expect($relationships)->toHaveKey('spacing');

        expect($relationships['color-primary'])->toHaveCount(3);
        expect($relationships['spacing'])->toHaveCount(3);
    });

    it('validates token values', function () {
        $customProperties = [
            new CustomProperty('color-valid', '#3b82f6'),
            new CustomProperty('color-invalid', 'not-a-color'),
            new CustomProperty('spacing-valid', '1rem'),
            new CustomProperty('spacing-invalid', 'invalid-size'),
            new CustomProperty('duration-valid', '300ms'),
            new CustomProperty('duration-invalid', 'fast'),
        ];

        $validation = $this->analyzer->validateTokenValues($customProperties);

        expect($validation['valid'])->toHaveCount(3);
        expect($validation['invalid'])->toHaveCount(3);

        $invalidToken = $validation['invalid'][0];
        expect($invalidToken['property'])->toBe('color-invalid');
        expect($invalidToken['reason'])->toContain('Invalid color format');
    });

    it('analyzes token usage patterns', function () {
        $tokens = [
            new DesignToken('primary-color', '#3b82f6', TokenCategory::COLOR),
            new DesignToken('secondary-color', '#6b7280', TokenCategory::COLOR),
            new DesignToken('text-base', '16px', TokenCategory::TYPOGRAPHY),
        ];

        // Mock CSS rules that reference these tokens
        $cssReferences = [
            'var(--primary-color)' => 15,  // Used 15 times
            'var(--secondary-color)' => 3, // Used 3 times
            'var(--text-base)' => 8,       // Used 8 times
        ];

        $usage = $this->analyzer->analyzeTokenUsage($tokens, $cssReferences);

        expect($usage)->toHaveCount(3);
        expect($usage[0]['usage_count'])->toBe(15);
        expect($usage[0]['usage_frequency'])->toBe('high');
    });

    it('suggests token optimizations', function () {
        $customProperties = [
            new CustomProperty('red-color', '#ef4444'),
            new CustomProperty('error-color', '#ef4444'),      // Duplicate value
            new CustomProperty('danger-color', '#ef4444'),     // Another duplicate
            new CustomProperty('unused-color', '#10b981'),     // Unused token
            new CustomProperty('spacing-tiny', '2px'),         // Non-standard spacing
        ];

        $suggestions = $this->analyzer->suggestOptimizations($customProperties);

        expect($suggestions['duplicates'])->toHaveCount(1);
        expect($suggestions['duplicates'][0]['tokens'])->toHaveCount(3);
        expect($suggestions['duplicates'][0]['value'])->toBe('#ef4444');

        expect($suggestions['non_standard_values'])->not->toBeEmpty();
        expect($suggestions['consolidation_opportunities'])->not->toBeEmpty();
    });

    it('generates token documentation', function () {
        $tokens = [
            new DesignToken('primary-color', '#3b82f6', TokenCategory::COLOR),
            new DesignToken('spacing-md', '1rem', TokenCategory::SPACING),
            new DesignToken('font-size-lg', '1.125rem', TokenCategory::TYPOGRAPHY),
        ];

        $documentation = $this->analyzer->generateTokenDocumentation($tokens);

        expect($documentation)->toHaveKey('color');
        expect($documentation)->toHaveKey('spacing');
        expect($documentation)->toHaveKey('typography');

        expect($documentation['color'])->toHaveCount(1);
        expect($documentation['color'][0]['name'])->toBe('primary-color');
        expect($documentation['color'][0]['value'])->toBe('#3b82f6');
        expect($documentation['color'][0]['example'])->toContain('background-color: var(--primary-color)');
    });

    it('calculates token coverage metrics', function () {
        $tokens = [
            new DesignToken('primary-color', '#3b82f6', TokenCategory::COLOR),
            new DesignToken('spacing-md', '1rem', TokenCategory::SPACING),
        ];

        // Mock CSS analysis showing hardcoded values
        $hardcodedValues = [
            '#ff0000' => 5,  // 5 hardcoded red colors
            '8px' => 3,      // 3 hardcoded 8px spacings
            '12px' => 2,     // 2 hardcoded 12px spacings
        ];

        $coverage = $this->analyzer->calculateTokenCoverage($tokens, $hardcodedValues);

        expect($coverage['token_usage'])->toBe(2);
        expect($coverage['hardcoded_values'])->toBe(10);
        expect($coverage['coverage_ratio'])->toBeCloseTo(0.167, 2); // 2/12
        expect($coverage['recommendations'])->not->toBeEmpty();
    });

    it('validates design system consistency', function () {
        $customProperties = [
            // Consistent color scale
            new CustomProperty('blue-100', '#dbeafe'),
            new CustomProperty('blue-500', '#3b82f6'),
            new CustomProperty('blue-900', '#1e3a8a'),

            // Inconsistent spacing (missing steps)
            new CustomProperty('space-1', '0.25rem'),
            new CustomProperty('space-3', '0.75rem'),  // Missing space-2
            new CustomProperty('space-5', '1.25rem'),  // Missing space-4
        ];

        $consistency = $this->analyzer->validateDesignSystemConsistency($customProperties);

        expect($consistency['color_scales']['blue']['complete'])->toBeTrue();
        expect($consistency['spacing_scales']['space']['complete'])->toBeFalse();
        expect($consistency['spacing_scales']['space']['missing_steps'])->toContain('space-2');
        expect($consistency['spacing_scales']['space']['missing_steps'])->toContain('space-4');
    });
});