import * as fs from 'node:fs';
import * as path from 'node:path';
import * as readline from 'node:readline/promises';
import { fileURLToPath } from 'node:url';
import { createElement } from 'react';
import { renderToFile } from '@react-pdf/renderer';
import { calculatePositions, calculateTotals } from '../src/logic/pricing/calculator.js';
import { CombinedQuotePDF } from '../src/components/CombinedQuotePDF.js';
import { initialState, PRICING } from '../src/logic/pricing/constants.js';
import { getTechDetails, getPrinciples } from '../src/logic/content-provider.js';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

async function main() {
    const args = process.argv.slice(2);
    const isInteractive = args.includes('--interactive') || args.includes('-I');
    const isEstimationOnly = args.includes('--estimation') || args.includes('-E');
    const inputPath = args.find((_, i) => args[i - 1] === '--input' || args[i - 1] === '-i');

    let state = { ...initialState };

    if (inputPath) {
        const rawData = fs.readFileSync(path.resolve(process.cwd(), inputPath), 'utf8');
        const diskState = JSON.parse(rawData);
        state = { ...state, ...diskState };
    }

    if (isInteractive) {
        state = await runWizard(state);
    }

    // Final confirmation of data needed for PDF
    if (!state.name || !state.email) {
        console.warn('⚠️ Missing recipient name or email. Document might look incomplete.');
    }

    const totals = calculateTotals(state, PRICING);
    const { totalPrice, monthlyPrice, totalPagesCount } = totals;

    const finalOutputPath = generateDefaultPath(state);
    const outputDir = path.dirname(finalOutputPath);
    if (!fs.existsSync(outputDir)) {
        fs.mkdirSync(outputDir, { recursive: true });
    }

    // Resolve assets for the PDF
    const assetsDir = path.resolve(process.cwd(), 'src/assets');
    const headerIcon = path.join(assetsDir, 'logo/Icon White Transparent.png');
    const footerLogo = path.join(assetsDir, 'logo/Logo Black Transparent.png');

    console.log(`🚀 Generating PDF: ${finalOutputPath}`);

    const estimationProps = {
        state,
        totalPrice,
        monthlyPrice,
        totalPagesCount,
        pricing: PRICING,
        headerIcon,
        footerLogo
    };

    await renderToFile(
        createElement(CombinedQuotePDF as any, {
            estimationProps,
            techDetails: getTechDetails(),
            principles: getPrinciples(),
            mode: isEstimationOnly ? 'estimation' : 'full',
            showAgbs: !isEstimationOnly // AGBS only for full quotes
        }) as any,
        finalOutputPath
    );

    console.log('✅ Done!');
}

async function runWizard(state: any) {
    const rl = readline.createInterface({
        input: process.stdin,
        output: process.stdout
    });

    console.log('\n--- Mintel Quote Generator Wizard ---\n');

    const ask = async (q: string, def?: string) => {
        const answer = await rl.question(`${q}${def ? ` [${def}]` : ''}: `);
        return answer || def || '';
    };

    const selectOne = async (q: string, options: { id: string, label: string }[]) => {
        console.log(`\n${q}:`);
        options.forEach((opt, i) => console.log(`${i + 1}) ${opt.label}`));
        const answer = await rl.question('Selection (number): ');
        const idx = parseInt(answer) - 1;
        return options[idx]?.id || options[0].id;
    };

    state.name = await ask('Recipient Name', state.name);
    state.email = await ask('Recipient Email', state.email);
    state.companyName = await ask('Company Name', state.companyName);

    state.projectType = await selectOne('Project Type', [
        { id: 'website', label: 'Website' },
        { id: 'web-app', label: 'Web App' }
    ]);

    if (state.projectType === 'website') {
        state.websiteTopic = await ask('Website Topic', state.websiteTopic);
        // Simplified for now, in a real tool we'd loop through all options
    }

    rl.close();
    return state;
}


function generateDefaultPath(state: any) {
    const now = new Date();
    const month = now.toISOString().slice(0, 7);
    const day = now.toISOString().slice(0, 10);
    // Add seconds and minutes for 100% unique names without collision
    const time = now.toLocaleTimeString('de-DE', { hour: '2-digit', minute: '2-digit', second: '2-digit' }).replace(/:/g, '-');
    const company = (state.companyName || state.name || 'Unknown').replace(/[^a-z0-9]/gi, '_');
    return path.join(process.cwd(), 'out', 'estimations', month, `${day}_${time}_${company}_${state.projectType}.pdf`);
}

main().catch(err => {
    console.error('❌ Error:', err);
    process.exit(1);
});