/**
 * Synchronize the YAML corpus under ../docs into the local D1 database.
 *
 * Usage: bun scripts/sync.ts [--remote]
 *
 * Applies migrations, regenerates seed.generated.sql from the YAML files,
 * and executes it against D1 (local by default).
 */
import { execSync } from "node:child_process";
import { readFileSync, readdirSync, writeFileSync } from "node:fs";
import { basename, join } from "node:path";
import yaml from "js-yaml";

const APP = join(import.meta.dirname, "..");
const DOCS = join(APP, "..", "docs");
const TARGET = process.argv.includes("--remote") ? "--remote" : "--local";

// ---------- helpers ----------

const sql = (v: string | number | null | undefined): string =>
  v == null ? "NULL" : typeof v === "number" ? String(v) : `'${v.replace(/'/g, "''")}'`;

/** js-yaml parses ISO dates into Date objects; normalize everything to strings. */
function iso(v: unknown): string | null {
  if (v == null) return null;
  if (v instanceof Date) return v.toISOString().slice(0, 10);
  return String(v);
}

/** Split a `description` block scalar into its "- " bullets (with wrapped-line continuation). */
function bulletsOf(desc: unknown): string[] {
  if (typeof desc !== "string") return [];
  const out: string[] = [];
  for (const line of desc.split("\n")) {
    const t = line.trim();
    if (t.startsWith("- ")) out.push(t.slice(2).trim());
    else if (t && out.length > 0) out[out.length - 1] += ` ${t}`;
  }
  return out;
}

function loadYaml(path: string): Record<string, unknown> {
  return yaml.load(readFileSync(path, "utf8")) as Record<string, unknown>;
}

// ---------- build statements ----------

const stmts: string[] = [
  "DELETE FROM profile;",
  "DELETE FROM summaries;",
  "DELETE FROM experience;",
  "DELETE FROM projects;",
  "DELETE FROM bullets;",
  "DELETE FROM item_skills;",
  "DELETE FROM skills;",
  "DELETE FROM education;",
  "DELETE FROM honors;",
  "DELETE FROM organizations;",
];

// about/profile.yml
{
  const p = loadYaml(join(DOCS, "about/profile.yml"));
  stmts.push(
    `INSERT INTO profile (id, full_name, email, phone, website, linkedin, github, twitter) VALUES (1, ${sql(
      String(p["full-name"]),
    )}, ${sql(iso(p.email))}, ${sql(iso(p.phone))}, ${sql(iso(p.website))}, ${sql(
      iso(p.linkedin),
    )}, ${sql(iso(p.github))}, ${sql(iso(p.twitter))});`,
  );
  for (const s of (p.summary as { role: string; summary: string }[] | undefined) ?? []) {
    stmts.push(
      `INSERT INTO summaries (role, summary) VALUES (${sql(s.role)}, ${sql(s.summary.trim())});`,
    );
  }
}

// about/education.yml
{
  const e = loadYaml(join(DOCS, "about/education.yml"));
  stmts.push(
    `INSERT INTO education (id, school, degree, field, start_date, end_date, activities) VALUES (1, ${sql(
      iso(e.school),
    )}, ${sql(iso(e.degree))}, ${sql(iso(e.field))}, ${sql(iso(e.start))}, ${sql(
      iso(e.end),
    )}, ${sql(typeof e.activities === "string" ? e.activities.trim() : null)});`,
  );
  for (const skill of (e.skills as string[] | undefined) ?? []) {
    stmts.push(
      `INSERT INTO item_skills (parent_type, parent_slug, skill) VALUES ('education', 'education', ${sql(skill)});`,
    );
  }
}

// about/honors.yml + organizations.yml (top-level lists)
for (const h of yaml.load(readFileSync(join(DOCS, "about/honors.yml"), "utf8")) as Record<
  string,
  unknown
>[]) {
  stmts.push(
    `INSERT INTO honors (title, date, institution) VALUES (${sql(iso(h.title))}, ${sql(
      iso(h.date),
    )}, ${sql(iso(h.institution))});`,
  );
}
for (const o of yaml.load(readFileSync(join(DOCS, "about/organizations.yml"), "utf8")) as Record<
  string,
  unknown
>[]) {
  stmts.push(
    `INSERT INTO organizations (name, url, title) VALUES (${sql(iso(o.name))}, ${sql(
      iso(o.url),
    )}, ${sql(iso(o.title))});`,
  );
}

// skills/languages.yml (tiered map)
{
  const tiers = loadYaml(join(DOCS, "skills/languages.yml")) as Record<string, string[]>;
  let pos = 0;
  for (const tier of ["expert", "strong", "familiar"]) {
    for (const name of tiers[tier] ?? []) {
      stmts.push(
        `INSERT INTO skills (name, category, tier, position) VALUES (${sql(name)}, 'language', ${sql(tier)}, ${pos++});`,
      );
    }
  }
}

// skills/frameworks.yml (flat list; group headers live in YAML comments)
{
  let grp: string | null = null;
  let pos = 0;
  for (const line of readFileSync(join(DOCS, "skills/frameworks.yml"), "utf8").split("\n")) {
    const t = line.trim();
    if (t.startsWith("#")) grp = t.replace(/^#\s*/, "");
    else if (t.startsWith("- "))
      stmts.push(
        `INSERT INTO skills (name, category, grp, position) VALUES (${sql(t.slice(2).trim())}, 'framework', ${sql(grp)}, ${pos++});`,
      );
  }
}

// skills/methodology.yml (flat list)
{
  const items = yaml.load(readFileSync(join(DOCS, "skills/methodology.yml"), "utf8")) as string[];
  items.forEach((name, pos) =>
    stmts.push(
      `INSERT INTO skills (name, category, position) VALUES (${sql(name)}, 'methodology', ${pos});`,
    ),
  );
}

// experience/*.yml
for (const file of readdirSync(join(DOCS, "experience")).filter((f) => /\.ya?ml$/.test(f)).sort()) {
  const slug = file.replace(/\.ya?ml$/, "");
  const e = loadYaml(join(DOCS, "experience", file));
  stmts.push(
    `INSERT INTO experience (slug, title, company, start_date, end_date, location, profile_heading) VALUES (${sql(
      slug,
    )}, ${sql(iso(e.title))}, ${sql(iso(e.company))}, ${sql(iso(e.start))}, ${sql(
      iso(e.end),
    )}, ${sql(iso(e.location))}, ${sql(iso(e["profile-heading"]))});`,
  );
  bulletsOf(e.description).forEach((text, position) =>
    stmts.push(
      `INSERT INTO bullets (parent_type, parent_slug, position, text) VALUES ('experience', ${sql(slug)}, ${position}, ${sql(text)});`,
    ),
  );
  for (const skill of (e.skills as string[] | undefined) ?? []) {
    stmts.push(
      `INSERT INTO item_skills (parent_type, parent_slug, skill) VALUES ('experience', ${sql(slug)}, ${sql(skill)});`,
    );
  }
}

// projects/*.yml
for (const file of readdirSync(join(DOCS, "projects")).filter((f) => /\.ya?ml$/.test(f)).sort()) {
  const slug = file.replace(/\.ya?ml$/, "");
  const p = loadYaml(join(DOCS, "projects", file));
  stmts.push(
    `INSERT INTO projects (slug, title, start_date, end_date, url, associated_with) VALUES (${sql(
      slug,
    )}, ${sql(iso(p.title))}, ${sql(iso(p.start))}, ${sql(iso(p.end))}, ${sql(
      iso(p["project-url"]),
    )}, ${sql(typeof p["associated-with"] === "string" ? basename(p["associated-with"]).replace(/\.ya?ml$/, "") : null)});`,
  );
  bulletsOf(p.description).forEach((text, position) =>
    stmts.push(
      `INSERT INTO bullets (parent_type, parent_slug, position, text) VALUES ('project', ${sql(slug)}, ${position}, ${sql(text)});`,
    ),
  );
  for (const skill of (p.skills as string[] | undefined) ?? []) {
    stmts.push(
      `INSERT INTO item_skills (parent_type, parent_slug, skill) VALUES ('project', ${sql(slug)}, ${sql(skill)});`,
    );
  }
}

// ---------- execute ----------

const seedPath = join(APP, "seed.generated.sql");
writeFileSync(seedPath, `${stmts.join("\n")}\n`);
console.log(`Wrote ${stmts.length} statements to seed.generated.sql`);

execSync(`bunx wrangler d1 migrations apply cv-tailor ${TARGET}`, { cwd: APP, stdio: "inherit" });
execSync(`bunx wrangler d1 execute cv-tailor ${TARGET} --file seed.generated.sql`, {
  cwd: APP,
  stdio: "inherit",
});
console.log("Sync complete.");