#!/usr/bin/env node
/**
 * generate-content.mjs
 * Reads prototype/uploads/final_cocktails.csv and creates Hugo content bundles
 * under content/recipes/{slug}/index.md
 *
 * Usage: node scripts/generate-content.mjs
 */

import { readFileSync, writeFileSync, mkdirSync, existsSync } from "fs";
import { join, dirname } from "path";
import { fileURLToPath } from "url";
import { parse } from "csv-parse/sync";

const __dirname = dirname(fileURLToPath(import.meta.url));
const ROOT = join(__dirname, "..");
const CSV_PATH = join(ROOT, "final_cocktails.csv");
const CONTENT_DIR = join(ROOT, "content/recipes");

// ── Helpers ──────────────────────────────────────────────────────────────────

function slugify(name) {
  return name
    .toLowerCase()
    .replace(/&/g, "and")
    .replace(/[^a-z0-9]+/g, "-")
    .replace(/^-+|-+$/g, "");
}

/** Parse a Python-style list string: "['Gin', 'Grand Marnier', None]" → ["Gin", "Grand Marnier"] */
function parsePythonList(str) {
  if (!str || str.trim() === "" || str === "None") return [];
  try {
    const normalized = str
      .replace(/None/g, "null")
      .replace(/'/g, '"');
    const arr = JSON.parse(normalized);
    return arr.filter((v) => v !== null && v !== undefined && String(v).trim() !== "");
  } catch {
    // Fallback: extract quoted strings manually
    const matches = str.match(/'([^']+)'/g);
    if (matches) return matches.map((m) => m.replace(/'/g, "").trim()).filter(Boolean);
    return [];
  }
}

/** Escape a YAML string value, wrapping in double quotes and escaping internals */
function yamlString(val) {
  if (!val) return '""';
  const escaped = String(val).replace(/\\/g, "\\\\").replace(/"/g, '\\"');
  return `"${escaped}"`;
}

/** Build a YAML sequence from a JS array of strings */
function yamlList(arr) {
  if (!arr || arr.length === 0) return "[]";
  return `[${arr.map((v) => yamlString(v)).join(", ")}]`;
}

/** Generate a SEO description from cocktail fields */
function buildDescription(name, category, glass, ingredients) {
  const ingredientSummary =
    ingredients.length > 0
      ? `Made with ${ingredients.slice(0, 4).join(", ")}${ingredients.length > 4 ? " and more" : ""}.`
      : "";
  return `${name}: a ${category} served in a ${glass}. ${ingredientSummary}`.trim();
}

// ── Main ──────────────────────────────────────────────────────────────────────

const csv = readFileSync(CSV_PATH, "utf-8");
const records = parse(csv, {
  columns: true,
  skip_empty_lines: true,
  relax_column_count: true,
  trim: true,
});

console.log(`Parsed ${records.length} cocktails from CSV`);

let created = 0;
let skipped = 0;
const slugMap = new Map(); // track duplicates

for (const row of records) {
  const name = (row.name || "").trim();
  if (!name) continue;

  let slug = slugify(name);
  // Handle duplicate slugs by appending the id
  if (slugMap.has(slug)) {
    slug = `${slug}-${row.id || slugMap.size}`;
  }
  slugMap.set(slug, true);

  const dir = join(CONTENT_DIR, slug);
  const file = join(dir, "index.md");

  if (existsSync(file)) {
    skipped++;
    continue;
  }

  const ingredients = parsePythonList(row.ingredients);
  const measures = parsePythonList(row.ingredientMeasures);
  const category = (row.category || "Cocktail").trim();
  const glass = (row.glassType || "Cocktail glass").trim();
  const alcoholic = (row.alcoholic || "").trim();
  const thumbnail = (row.drinkThumbnail || "").trim();
  const instructions = (row.instructions || "").trim();
  const description = buildDescription(name, category, glass, ingredients);

  mkdirSync(dir, { recursive: true });

  const frontmatter = [
    "---",
    `title: ${yamlString(name)}`,
    `date: "2026-01-01"`,
    `draft: false`,
    `description: ${yamlString(description)}`,
    `alcoholic: ${yamlString(alcoholic)}`,
    `categories: ${yamlList([category])}`,
    `glasses: ${yamlList([glass])}`,
    `ingredients: ${yamlList(ingredients)}`,
    `ingredientMeasures: ${yamlList(measures)}`,
    `drinkThumbnail: ${yamlString(thumbnail)}`,
    "---",
    "",
    instructions,
    "",
  ].join("\n");

  writeFileSync(file, frontmatter, "utf-8");
  created++;

  if (created % 50 === 0) {
    process.stdout.write(`  [${created}/${records.length}] created…\r`);
  }
}

console.log(`\nDone. Created: ${created}, Skipped (already exist): ${skipped}`);