/* ═══════════════════════════════════════════════════════════════
   PEOPLE ROUTES  —  read-only, mounted under /api

     GET /teams/:id/people        current public members of a team
     GET /people?ids=a,b,c        named people, any order
     GET /people/:id              one person's page

   The team route reads v_org_leadership, which already decides who
   counts as current and public — affiliation still open, marked
   public, person published. Restating those conditions here is how
   they drift apart.

   That view is affiliation-driven, so it can't serve the lookup
   route: a person with no affiliations would vanish, and one with
   several would appear more than once. The lookup reads people
   directly and returns no title, because a bare slug names no seat.

   Photos are filenames, as everywhere else in this API. The
   component decides where they live.
   ═══════════════════════════════════════════════════════════════ */

import { Hono } from "hono";

import { asBool, loadBlocks, loadLinks, paragraphs, splitLinks } from "../shape.js";

const people = new Hono();

const CACHE = "public, max-age=60, stale-while-revalidate=300";

const json = (c, body) => c.json(body, 200, { "Cache-Control": CACHE });

const marks = (n) => Array(n).fill("?").join(",");

/* How many slugs one request may name. Keeps the URL sane. */
const MAX_IDS = 50;

function shapePerson(row) {
  return {
    id: row.id ?? row.person_id,
    name: row.display_name,
    // Only the team route knows a seat; the lookup route doesn't.
    title: row.title ?? null,
    tagline: row.tagline,
    pronouns: row.pronouns,
    photo: row.photo,
    location_label: row.location_label,
    public_email: row.public_email,
    org: row.primary_org_id
      ? { id: row.primary_org_id, name: row.primary_org_name }
      : null,
    bio: splitParagraphs(row.bio),
    role: row.role ?? null,
    is_owner: row.is_owner === undefined ? false : asBool(row.is_owner),
  };
}

/* people.bio is one run of prose with blank lines between
   paragraphs — unrelated to shape.js's paragraphs(), which turns
   content_block rows into text. */
function splitParagraphs(text) {
  if (!text) return null;
  const parts = text
    .split(/\n\s*\n/)
    .map((part) => part.trim())
    .filter(Boolean);
  return parts.length ? parts : null;
}

/* ── One team's people ─────────────────────────────────────── */

people.get("/teams/:id/people", (c) => {
  const db = c.get("db");
  const id = c.req.param("id");

  const team = db
    .prepare(
      `SELECT id, org_id, name, tagline, color, logo
         FROM teams
        WHERE id = ? AND is_published = 1`,
    )
    .get(id);

  if (!team) return c.json({ error: "No such team" }, 404);

  // The view orders by org first, which isn't what a single team
  // wants, so the order is restated here.
  const rows = db
    .prepare(
      `SELECT * FROM v_org_leadership
        WHERE team_id = ?
        ORDER BY is_owner DESC,
                 sort_order,
                 COALESCE(sort_name, display_name),
                 display_name`,
    )
    .all(id);

  return json(c, { team, people: rows.map(shapePerson) });
});

/* ── People by id ──────────────────────────────────────────────
     For hand-picked lists in a section. Order is the caller's, so
     there's no ORDER BY here.
   ───────────────────────────────────────────────────────────── */

people.get("/people", (c) => {
  const db = c.get("db");

  const ids = [
    ...new Set(
      (c.req.query("ids") ?? "")
        .split(",")
        .map((part) => part.trim())
        .filter(Boolean),
    ),
  ].slice(0, MAX_IDS);

  if (ids.length === 0) return json(c, { people: [] });

  const rows = db
    .prepare(
      `SELECT p.id,
              p.display_name,
              p.pronouns,
              p.photo,
              p.tagline,
              p.location_label,
              p.public_email,
              p.bio,
              o.id   AS primary_org_id,
              o.name AS primary_org_name
         FROM people p
         LEFT JOIN organizations o ON o.id = p.primary_org_id
        WHERE p.id IN (${marks(ids.length)})
          AND p.is_published = 1`,
    )
    .all(...ids);

  return json(c, { people: rows.map(shapePerson) });
});

/* ── One person's page ─────────────────────────────────────────
     Everything public that points at this person, each list with
     the same visibility rules its own page applies: a role needs a
     public affiliation and a published organization, an event must
     be published, an award must be published and the citation
     public. A hidden team drops its name rather than the role —
     the seat is still real, it just has no page to link to.

     Roles are current and past. v_org_leadership only knows
     current, which is what a roster wants and not what a person's
     record does, so this reads affiliations directly.

     Events merge two tables: event_people (who was billed, and as
     what) and event_hosts (who ran it). One person can be both at
     one event, so they collapse to one row carrying every role.
   ───────────────────────────────────────────────────────────── */

people.get("/people/:id", (c) => {
  const db = c.get("db");
  const id = c.req.param("id");

  const row = db
    .prepare(
      `SELECT p.id,
              p.display_name,
              p.pronouns,
              p.photo,
              p.tagline,
              p.location_label,
              p.public_email,
              p.bio,
              o.id   AS primary_org_id,
              o.name AS primary_org_name,
              o.kind AS primary_org_kind
         FROM people p
         LEFT JOIN organizations o ON o.id = p.primary_org_id AND o.is_published = 1
        WHERE p.id = ? AND p.is_published = 1`,
    )
    .get(id);

  if (!row) return c.json({ error: "No such person" }, 404);

  const links = loadLinks(db, "person", [id]).get(id) ?? [];
  const cards = loadBlocks(db, "person", [id], "card").get(id) ?? [];
  const body = loadBlocks(db, "person", [id], "body").get(id) ?? [];
  const { actions, socials, website, instagram } = splitLinks(links);

  // Current first, then most recently ended. Within each, the same
  // order a roster uses: owner, then the affiliation's sort_order.
  const roles = db
    .prepare(
      `SELECT a.title, a.role, a.is_owner, a.started_on, a.ended_on,
              o.id AS org_id, o.name AS org_name, o.kind AS org_kind,
              t.id AS team_id, t.name AS team_name
         FROM affiliations a
         JOIN organizations o ON o.id = a.org_id AND o.is_published = 1
         LEFT JOIN teams t    ON t.id = a.team_id AND t.is_published = 1
        WHERE a.person_id = ? AND a.is_public = 1
        ORDER BY a.ended_on IS NOT NULL, a.ended_on DESC,
                 a.is_owner DESC, a.sort_order, o.sort_order`,
    )
    .all(id)
    .map((r) => ({
      title: r.title,
      role: r.role,
      is_owner: asBool(r.is_owner),
      started_on: r.started_on,
      ended_on: r.ended_on,
      org: { id: r.org_id, name: r.org_name, kind: r.org_kind },
      team: r.team_id ? { id: r.team_id, name: r.team_name } : null,
    }));

  const eventRows = db
    .prepare(
      `SELECT e.id, e.title, e.event_type, e.date_label, e.starts_on,
              e.effective_status AS status, x.role, x.title AS billing
         FROM (
                SELECT event_id, role, title, sort_order
                  FROM event_people
                 WHERE person_id = ? AND is_public = 1
                UNION ALL
                SELECT event_id, 'host', NULL, -1
                  FROM event_hosts
                 WHERE person_id = ?
              ) x
         JOIN v_events e ON e.id = x.event_id AND e.is_published = 1
        ORDER BY e.starts_on IS NULL, e.starts_on DESC, e.title, x.sort_order`,
    )
    .all(id, id);

  const byEvent = new Map();
  for (const r of eventRows) {
    let event = byEvent.get(r.id);
    if (!event) {
      event = {
        id: r.id,
        title: r.title,
        event_type: r.event_type,
        date_label: r.date_label,
        starts_on: r.starts_on,
        status: r.status,
        roles: [],
      };
      byEvent.set(r.id, event);
    }
    // Hosting shows up from both tables when a host is also billed
    // as one. Once is enough.
    if (!event.roles.some((role) => role.role === r.role && role.title === r.billing)) {
      event.roles.push({ role: r.role, title: r.billing });
    }
  }

  const awards = db
    .prepare(
      `SELECT pa.awarded_on, pa.citation,
              a.id AS award_id, a.name AS award_name, a.logo AS award_logo,
              e.id AS event_id, e.title AS event_title
         FROM person_awards pa
         JOIN awards a      ON a.id = pa.award_id AND a.is_published = 1
         LEFT JOIN events e ON e.id = pa.event_id AND e.is_published = 1
        WHERE pa.person_id = ? AND pa.is_public = 1
        ORDER BY pa.awarded_on DESC, a.sort_order, a.name`,
    )
    .all(id)
    .map((r) => ({
      award: { id: r.award_id, name: r.award_name, logo: r.award_logo },
      awarded_on: r.awarded_on,
      citation: r.citation,
      event: r.event_id ? { id: r.event_id, title: r.event_title } : null,
    }));

  const person = shapePerson(row);

  return json(c, {
    person: {
      id: person.id,
      name: person.name,
      pronouns: person.pronouns,
      tagline: person.tagline,
      photo: person.photo,
      location_label: person.location_label,
      public_email: person.public_email,
      org: person.org && { ...person.org, kind: row.primary_org_kind },
      bio: person.bio ?? [],
      description: paragraphs(cards),
      blocks: body,
      links: actions,
      socials,
      website,
      instagram,
      roles,
      events: [...byEvent.values()],
      awards,
    },
  });
});

export default people;