import { z } from 'zod';
import { Tool } from '@modelcontextprotocol/sdk/types.js';
import { ColorInput, ContrastResult } from '../types/index';
import { analyzeContrast } from '../utils/color';
// Input schema for contrast analysis
const ContrastAnalysisSchema = z.object({
foreground: ColorInput,
background: ColorInput
});
export const contrastAnalysisTool: Tool = {
name: 'analyze_contrast',
description: 'Analyze WCAG color contrast ratio between foreground and background colors. Supports multiple color formats (hex, rgb, hsl, named colors).',
inputSchema: {
type: 'object',
properties: {
foreground: {
type: 'string',
description: 'Foreground color as hex (#ff0000), rgb(255,0,0), hsl(0,100%,50%), or named color (red)'
},
background: {
type: 'string',
description: 'Background color as hex (#ffffff), rgb(255,255,255), hsl(0,0%,100%), or named color (white)'
}
},
required: ['foreground', 'background']
}
};
export async function handleContrastAnalysis(args: unknown): Promise<ContrastResult> {
const { foreground, background } = ContrastAnalysisSchema.parse(args);
return analyzeContrast(foreground, background);
}
