#!/usr/bin/env node
import fs from 'node:fs';
import path from 'node:path';
import { parseArgs, getUsageText, SUPPORTED_TYPES } from './arg-parser.js';
import { resolveInput } from './input-resolver.js';
import { createServer } from './server.js';
import { startWatcher } from './watcher.js';
import { log } from './logger.js';
import { getBundlePath } from './bundle-path.js';
import { generateTemplates } from './template-generator.js';
import { analyze } from './analyzer/index.js';
import { generateDomainContext } from './analyzer/domain-context.js';
import open from 'open';
/**
 * Opens the default system browser at the given URL.
 * If the browser fails to open, logs a warning and continues.
 */
async function openBrowser(url) {
    try {
        await open(url);
    }
    catch {
        log('warn', 'Could not open browser automatically');
    }
}
async function main() {
    // Parse CLI arguments
    const parseResult = parseArgs(process.argv.slice(2));
    if (!parseResult.success) {
        log('error', parseResult.error);
        process.stdout.write(getUsageText() + '\n');
        process.exit(1);
    }
    const { options } = parseResult;
    // Default behavior (no command) or --help → show help
    if (options.command === 'help') {
        process.stdout.write(getUsageText() + '\n');
        process.exit(0);
    }
    // --preview <path>: start the preview server
    if (options.command === 'preview') {
        await runPreview(options);
    }
    // --analyze [path]: run static analysis and generate knowledge graph
    if (options.command === 'analyze') {
        await runAnalyze(options);
    }
    // --create-md [path]: generate agent config files
    if (options.command === 'create-md') {
        await runCreateMd(options.inputPath || '.', options.type, options.init);
    }
}
async function runPreview(options) {
    // Validate input path exists on filesystem
    if (!fs.existsSync(options.inputPath)) {
        log('error', `Path does not exist: ${options.inputPath}`);
        process.exit(1);
    }
    // Resolve input to manifest and file mapping
    const resolveResult = resolveInput(options.inputPath);
    if (!resolveResult.success) {
        log('error', resolveResult.error);
        process.exit(1);
    }
    const { manifest, fileMapping } = resolveResult;
    // Log discovery summary
    const projectCount = manifest.length;
    const graphFileCount = manifest.reduce((sum, entry) => sum + entry.graphFiles.length, 0);
    log('info', `Found ${projectCount} projects, ${graphFileCount} graph files`);
    // Resolve bundle path
    let bundlePath;
    try {
        bundlePath = getBundlePath();
    }
    catch (err) {
        const message = err instanceof Error ? err.message : String(err);
        log('error', message);
        process.exit(1);
    }
    // Create and start server
    const server = createServer({
        port: options.port,
        manifest,
        fileMapping,
        bundlePath,
    });
    try {
        await server.start();
    }
    catch (err) {
        const message = err instanceof Error ? err.message : String(err);
        log('error', message);
        process.exit(1);
    }
    log('info', `Server running at http://localhost:${options.port}`);
    // Open browser unless --no-open
    if (options.open) {
        await openBrowser(`http://localhost:${options.port}`);
    }
    // Start watcher unless --no-watch
    let watcher = null;
    if (options.watch) {
        watcher = startWatcher({
            inputPath: options.inputPath,
            onManifestUpdate: (updatedManifest, updatedFileMapping) => {
                server.updateManifest(updatedManifest, updatedFileMapping);
            },
        });
    }
    // Register SIGINT handler for graceful shutdown
    process.on('SIGINT', async () => {
        if (watcher) {
            watcher.close();
        }
        await server.stop();
        process.exit(0);
    });
}
async function runAnalyze(options) {
    // Resolve target path (default to current directory if not provided)
    const targetPath = path.resolve(options.inputPath || '.');
    // Validate the target path exists
    if (!fs.existsSync(targetPath)) {
        log('error', `Path does not exist: ${targetPath}`);
        process.exit(1);
    }
    log('info', `Analyzing: ${targetPath}`);
    // Run the analysis pipeline
    const { dashboard, stats, files } = await analyze(targetPath, { full: options.full });
    // Create the .understand-anything/ output directory if it doesn't exist
    const outputDir = path.join(targetPath, '.understand-anything');
    if (!fs.existsSync(outputDir)) {
        fs.mkdirSync(outputDir, { recursive: true });
    }
    // Write knowledge-graph.json with full schema
    const knowledgeGraphPath = path.join(outputDir, 'knowledge-graph.json');
    fs.writeFileSync(knowledgeGraphPath, JSON.stringify(dashboard, null, 2));
    // Write meta.json with timestamp, git commit hash, version, and analyzedFiles count
    const meta = {
        lastAnalyzedAt: new Date().toISOString(),
        gitCommitHash: dashboard.project.gitCommitHash || '',
        version: '1.0.0',
        analyzedFiles: stats.filesAnalyzed,
    };
    const metaPath = path.join(outputDir, 'meta.json');
    fs.writeFileSync(metaPath, JSON.stringify(meta, null, 2));
    // Generate domain context
    const domainContext = generateDomainContext(targetPath, files);
    const domainContextPath = path.join(outputDir, 'domain-context.json');
    fs.writeFileSync(domainContextPath, JSON.stringify(domainContext, null, 2));
    // Log summary
    const nodeTypeSummary = Object.entries(stats.nodesByType)
        .map(([type, count]) => `${type}: ${count}`)
        .join(', ');
    const tourSteps = dashboard.tour ? dashboard.tour.length : 0;
    log('info', `Analysis complete:`);
    log('info', `  Files analyzed: ${stats.filesAnalyzed}`);
    log('info', `  Nodes: ${nodeTypeSummary || '(none)'}`);
    log('info', `  Edges: ${stats.edgesCreated}`);
    log('info', `  Layers: ${stats.layersIdentified}`);
    log('info', `  Tour steps: ${tourSteps}`);
    log('info', `  Domain context: ${domainContext.entryPoints.length} entry points, ${domainContext.fileSignatures.length} signatures`);
    log('info', `Output written to: ${outputDir}`);
    process.exit(0);
}
async function runOpenspecInit(targetDir) {
    const { execSync } = await import('node:child_process');
    // Check if openspec is installed
    try {
        execSync('openspec --version', { stdio: 'pipe' });
        log('info', 'openspec is already installed');
    }
    catch {
        log('info', 'Installing openspec globally...');
        try {
            execSync('npm install -g openspec@latest', { stdio: 'inherit' });
            log('info', 'openspec installed successfully');
        }
        catch (err) {
            const message = err instanceof Error ? err.message : String(err);
            log('error', `Failed to install openspec: ${message}`);
            process.exit(1);
        }
    }
    // Check if openspec is already initialized (look for openspec config files)
    const openspecConfig = ['openspec.json', '.openspec.json', 'openspec.yaml', '.openspec.yaml', 'openspec/AGENTS.md']
        .some(f => fs.existsSync(`${targetDir}/${f}`));
    if (openspecConfig) {
        log('info', 'openspec already initialized (config file found)');
    }
    else {
        log('info', 'Running openspec init...');
        try {
            execSync('openspec init', { stdio: 'inherit', cwd: targetDir });
            log('info', 'openspec init completed');
        }
        catch (err) {
            const message = err instanceof Error ? err.message : String(err);
            log('warn', `openspec init failed: ${message}. Continuing with file generation...`);
        }
    }
}
async function runCreateMd(targetPath, type, init) {
    // If no type specified, prompt user to choose interactively
    if (!type) {
        type = await promptForType();
    }
    const targetDir = targetPath || '.';
    if (!fs.existsSync(targetDir)) {
        log('error', `Target directory does not exist: ${targetDir}`);
        process.exit(1);
    }
    // --init: install openspec and run openspec init
    if (init) {
        await runOpenspecInit(targetDir);
    }
    log('info', `Generating ${type} templates in: ${targetDir}`);
    const result = generateTemplates(targetDir, type);
    if (!result.success) {
        log('error', result.error || 'Failed to generate templates');
        process.exit(1);
    }
    if (result.filesCreated.length === 0) {
        log('info', 'No new files created (all files already exist)');
    }
    else {
        log('info', `Created ${result.filesCreated.length} files:`);
        for (const file of result.filesCreated) {
            log('info', `  ${file}`);
        }
        // Show skill descriptions and usage guide
        process.stdout.write('\n');
        process.stdout.write('━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n');
        process.stdout.write('\n');
        process.stdout.write('  📦 Available skills:\n');
        process.stdout.write('\n');
        process.stdout.write('  understand-chat       Ask questions about the codebase using the knowledge graph\n');
        process.stdout.write('  understand-diff       Analyze code changes to identify affected components and risks\n');
        process.stdout.write('  understand-domain     Extract business domain knowledge, flows, and process steps\n');
        process.stdout.write('  understand-explain    Deep-dive explanation of a specific file, function, or module\n');
        process.stdout.write('  understand-knowledge  Analyze a wiki/knowledge base and generate a knowledge graph\n');
        process.stdout.write('  understand-onboard    Generate an onboarding guide for new team members\n');
        process.stdout.write('\n');
        process.stdout.write('━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n');
        process.stdout.write('\n');
        process.stdout.write('  🚀 Getting started:\n');
        process.stdout.write('\n');
        process.stdout.write('  1. Generate a knowledge graph for your project:\n');
        process.stdout.write('     Run the /understand skill in your AI coding tool\n');
        process.stdout.write('     This creates .understand-anything/knowledge-graph.json\n');
        process.stdout.write('\n');
        process.stdout.write('  2. Use skills in your AI tool:\n');
        process.stdout.write('     /understand-chat "How does authentication work?"\n');
        process.stdout.write('     /understand-explain src/auth/login.ts\n');
        process.stdout.write('     /understand-diff\n');
        process.stdout.write('     /understand-onboard\n');
        process.stdout.write('\n');
        process.stdout.write('  3. Preview the knowledge graph in browser:\n');
        process.stdout.write('     project-understand --preview .understand-anything\n');
        process.stdout.write('\n');
        process.stdout.write('━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n');
        process.stdout.write('\n');
        process.stdout.write('  📝 Notes:\n');
        process.stdout.write('  • Steering/config files teach the AI agent about the knowledge graph structure\n');
        process.stdout.write('  • Skills define specific actions the agent can perform\n');
        process.stdout.write('  • Hooks (where supported) auto-trigger updates after code changes\n');
        process.stdout.write('  • The knowledge graph must exist before skills can be used\n');
        process.stdout.write('\n');
        process.stdout.write('━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n');
        process.stdout.write('\n');
        process.stdout.write('  💡 Usage examples by platform:\n');
        process.stdout.write('\n');
        process.stdout.write('  Kiro:\n');
        process.stdout.write('    • Skills appear in chat via # context key (e.g., #understand-chat)\n');
        process.stdout.write('    • Steering files auto-load into every conversation\n');
        process.stdout.write('    • Hooks trigger automatically (e.g., post-commit graph update)\n');
        process.stdout.write('\n');
        process.stdout.write('  Claude Code:\n');
        process.stdout.write('    • Use /understand-chat "query" to invoke skills\n');
        process.stdout.write('    • PostToolUse hooks run after git commits to check graph staleness\n');
        process.stdout.write('    • Plugin metadata in plugin.json registers all skills\n');
        process.stdout.write('\n');
        process.stdout.write('  Codex / OpenCode:\n');
        process.stdout.write('    • AGENTS.md is read automatically at session start\n');
        process.stdout.write('    • Skills in .codex/skills/ or .opencode/skills/ are discovered by the agent\n');
        process.stdout.write('    • Invoke: /understand-chat, /understand-explain <file>\n');
        process.stdout.write('\n');
        process.stdout.write('  OpenClaw:\n');
        process.stdout.write('    • AGENT.md provides steering context\n');
        process.stdout.write('    • Skills in .agent/skills/ are auto-discovered\n');
        process.stdout.write('    • Hooks in .agent/hooks/ trigger on events (e.g., post-commit)\n');
        process.stdout.write('\n');
        process.stdout.write('  Cursor:\n');
        process.stdout.write('    • Rules in .cursor/rules/ are loaded based on globs and alwaysApply\n');
        process.stdout.write('    • No skills/hooks — use rules to guide the agent behavior\n');
        process.stdout.write('    • The agent reads the knowledge graph when rules reference it\n');
        process.stdout.write('\n');
        process.stdout.write('  OpenSpec (GitHub Copilot):\n');
        process.stdout.write('    • openspec/AGENTS.md provides agent-level steering\n');
        process.stdout.write('    • .github/instructions/ files are loaded as project context\n');
        process.stdout.write('    • .github/prompts/ files are available as reusable prompts\n');
        process.stdout.write('\n');
    }
}
async function promptForType() {
    const { createInterface } = await import('node:readline');
    const rl = createInterface({ input: process.stdin, output: process.stdout });
    const descriptions = {
        'kiro': '.kiro/ (steering, skills, hooks)',
        'codex': 'AGENTS.md + .codex/skills/ (OpenAI Codex)',
        'opencode': 'AGENTS.md + .opencode/skills/ (OpenCode)',
        'claude-code': '.claude-plugin/ (plugin.json + skills/)',
        'openclaw': '.agent/AGENT.md + .agent/skills/ (OpenClaw)',
        'cursor': '.cursor/rules/ (Cursor)',
        'openspec': 'openspec/AGENTS.md + .github/ (GitHub Copilot)',
    };
    process.stdout.write('\nSelect a template type:\n\n');
    SUPPORTED_TYPES.forEach((t, i) => {
        process.stdout.write(`  ${i + 1}) ${t.padEnd(14)} → ${descriptions[t]}\n`);
    });
    process.stdout.write('\n');
    return new Promise((resolve) => {
        rl.question('Enter number or type name: ', (answer) => {
            rl.close();
            const trimmed = answer.trim().toLowerCase();
            // Try as number
            const num = parseInt(trimmed, 10);
            if (num >= 1 && num <= SUPPORTED_TYPES.length) {
                resolve(SUPPORTED_TYPES[num - 1]);
                return;
            }
            // Try as type name
            if (SUPPORTED_TYPES.includes(trimmed)) {
                resolve(trimmed);
                return;
            }
            log('error', `Invalid selection: "${answer.trim()}". Supported types: ${SUPPORTED_TYPES.join(', ')}`);
            process.exit(1);
        });
    });
}
main();