/**
 * @fileoverview Extract all API endpoints from api-docs.json
 * Analyzes the OpenAPI specification and extracts endpoint details
 */

import fs from 'fs';
import path from 'path';

/**
 * Extract all endpoints from api-docs.json
 */
function extractEndpoints() {
    try {
        // Read the api-docs.json file
        const apiDocsPath = path.join(process.cwd(), '..', 'api-docs.json');
        const apiDocsContent = fs.readFileSync(apiDocsPath, 'utf8');
        const apiDocs = JSON.parse(apiDocsContent);

        console.log('=== API DOCS ANALYSIS ===');
        console.log(`Title: ${apiDocs.info.title}`);
        console.log(`Version: ${apiDocs.info.version}`);
        console.log(`Description: ${apiDocs.info.description}`);
        console.log('');

        const endpoints = [];
        const paths = apiDocs.paths || {};

        // Extract all endpoints
        Object.keys(paths).forEach(pathKey => {
            const pathData = paths[pathKey];
            
            // Each path can have multiple HTTP methods
            Object.keys(pathData).forEach(method => {
                const methodData = pathData[method];
                
                const endpoint = {
                    path: pathKey,
                    method: method.toUpperCase(),
                    operationId: methodData.operationId,
                    summary: methodData.summary,
                    description: methodData.description,
                    tags: methodData.tags || [],
                    parameters: extractParameters(methodData),
                    requestBody: extractRequestBody(methodData),
                    responses: methodData.responses,
                    security: methodData.security || [],
                    requiresAuth: (methodData.security && methodData.security.length > 0)
                };

                endpoints.push(endpoint);
            });
        });

        console.log(`=== EXTRACTED ${endpoints.length} ENDPOINTS ===`);
        console.log('');

        // Group by tags for analysis
        const endpointsByTag = {};
        endpoints.forEach(endpoint => {
            endpoint.tags.forEach(tag => {
                if (!endpointsByTag[tag]) {
                    endpointsByTag[tag] = [];
                }
                endpointsByTag[tag].push(endpoint);
            });
        });

        // Display summary by tags
        console.log('=== ENDPOINTS BY TAG ===');
        Object.keys(endpointsByTag).sort().forEach(tag => {
            console.log(`${tag}: ${endpointsByTag[tag].length} endpoints`);
        });
        console.log('');

        // Display authentication analysis
        const authEndpoints = endpoints.filter(e => e.requiresAuth);
        const publicEndpoints = endpoints.filter(e => !e.requiresAuth);
        
        console.log('=== AUTHENTICATION ANALYSIS ===');
        console.log(`Authenticated endpoints: ${authEndpoints.length}`);
        console.log(`Public endpoints: ${publicEndpoints.length}`);
        console.log('');

        // Save detailed analysis
        const analysis = {
            summary: {
                totalEndpoints: endpoints.length,
                authenticatedEndpoints: authEndpoints.length,
                publicEndpoints: publicEndpoints.length,
                tags: Object.keys(endpointsByTag).sort()
            },
            endpointsByTag,
            allEndpoints: endpoints
        };

        const outputPath = path.join(process.cwd(), 'api-docs-analysis.json');
        fs.writeFileSync(outputPath, JSON.stringify(analysis, null, 2));
        console.log(`Detailed analysis saved to: ${outputPath}`);

        // Display all endpoints
        console.log('');
        console.log('=== ALL ENDPOINTS ===');
        endpoints.forEach((endpoint, index) => {
            console.log(`${index + 1}. ${endpoint.method} ${endpoint.path}`);
            console.log(`   Summary: ${endpoint.summary}`);
            console.log(`   Tags: ${endpoint.tags.join(', ')}`);
            console.log(`   Auth Required: ${endpoint.requiresAuth ? 'Yes' : 'No'}`);
            if (endpoint.parameters && endpoint.parameters.length > 0) {
                console.log(`   Parameters: ${endpoint.parameters.length}`);
            }
            if (endpoint.requestBody) {
                console.log(`   Request Body: Yes`);
            }
            console.log('');
        });

        return analysis;

    } catch (error) {
        console.error('Error extracting endpoints:', error);
        throw error;
    }
}

/**
 * Extract parameters from endpoint definition
 */
function extractParameters(methodData) {
    const parameters = [];
    
    // Path parameters, query parameters, etc.
    if (methodData.parameters) {
        methodData.parameters.forEach(param => {
            parameters.push({
                name: param.name,
                in: param.in, // path, query, header, etc.
                required: param.required || false,
                type: param.schema?.type || 'string',
                description: param.description || ''
            });
        });
    }

    return parameters;
}

/**
 * Extract request body schema
 */
function extractRequestBody(methodData) {
    if (!methodData.requestBody) {
        return null;
    }

    const requestBody = {
        required: methodData.requestBody.required || false,
        content: {}
    };

    // Extract content types and schemas
    if (methodData.requestBody.content) {
        Object.keys(methodData.requestBody.content).forEach(contentType => {
            const contentData = methodData.requestBody.content[contentType];
            requestBody.content[contentType] = {
                schema: contentData.schema || {}
            };
        });
    }

    return requestBody;
}

// Run the extraction
if (import.meta.url === `file://${process.argv[1]}`) {
    extractEndpoints();
}

export { extractEndpoints };