import test from 'node:test';
import assert from 'node:assert/strict';
import Fastify from 'fastify';
import cookie from '@fastify/cookie';
import rateLimit from '@fastify/rate-limit';
import api from '../src/api.js';

/* "de voortgangen werken niet" (gebruikersklacht) - dit pad had nog GEEN enkele
   test (mocked-pool of anders), ondanks dat het de kern van de voortgangs-
   feature is: een leerling logt een afgerond moment, en het datamodel bepaalt
   zelf teacher_id/board_id uit de toewijzing (nooit van de client). Dekt de
   drie manieren waarop een toewijzing gevonden kan worden (leerling-eigen,
   klasbreed, thuiskind-via-ouder) plus de foutpaden. */
function makeApp(user, { assignmentRows = {}, parentRows = [] } = {}) {
  const calls = [];
  const query = async (sql, params = []) => {
    calls.push({ sql, params });
    if (sql.includes('FROM sessions s JOIN users u')) return { rows: [user] };
    if (sql.includes('FROM user_roles')) return { rows: [] };
    if (sql === 'SELECT * FROM assignments WHERE pupil_id = $1') return { rows: assignmentRows.byPupil ? [assignmentRows.byPupil] : [] };
    if (sql === 'SELECT * FROM assignments WHERE class_id = $1') return { rows: assignmentRows.byClass ? [assignmentRows.byClass] : [] };
    if (sql.startsWith('SELECT parent_id FROM parent_children')) return { rows: parentRows };
    if (sql.startsWith('INSERT INTO progress_events')) return { rows: [] };
    return { rows: [] };
  };
  const pool = { query, async connect() { return { query, release() {} }; } };
  return (async () => {
    const app = Fastify({ trustProxy: 2 });
    await app.register(cookie);
    await app.register(rateLimit, { global: false });
    app.decorate('pg', pool);
    await app.register(api, { prefix: '/api' });
    await app.ready();
    return { app, calls };
  })();
}

const cookies = { teach_session: 'x'.repeat(64) };
const validBody = { widgetId: 'letters:0', widgetType: 'letters', attempts: 1, correct: 1, stars: 1 };
function insertCall(calls) {
  return calls.find(c => c.sql.startsWith('INSERT INTO progress_events'));
}

test('voortgang: leerling-eigen toewijzing wint en levert de juiste teacher_id/board_id op', async () => {
  const pupil = { id: 9, username: 'lena', role: 'pupil', school_id: 2, class_id: 50, data: {}, data_rev: 0 };
  const { app, calls } = await makeApp(pupil, {
    assignmentRows: {
      byPupil: { teacher_id: 3, board_id: 'bord-a' },
      byClass: { teacher_id: 4, board_id: 'bord-b' }, // zou genegeerd moeten worden
    },
  });
  const res = await app.inject({ method: 'POST', url: '/api/my/progress', cookies, payload: validBody });
  assert.equal(res.statusCode, 200, res.body);
  const ins = insertCall(calls);
  assert.ok(ins, 'INSERT verwacht');
  assert.equal(ins.params[1], 3);
  assert.equal(ins.params[2], 'bord-a');
});

test('voortgang: valt terug op de klasbrede toewijzing als er geen eigen toewijzing is', async () => {
  const pupil = { id: 9, username: 'lena', role: 'pupil', school_id: 2, class_id: 50, data: {}, data_rev: 0 };
  const { app, calls } = await makeApp(pupil, {
    assignmentRows: { byClass: { teacher_id: 4, board_id: 'bord-b' } },
  });
  const res = await app.inject({ method: 'POST', url: '/api/my/progress', cookies, payload: validBody });
  assert.equal(res.statusCode, 200, res.body);
  const ins = insertCall(calls);
  assert.equal(ins.params[1], 4);
  assert.equal(ins.params[2], 'bord-b');
});

test('voortgang: thuiskind zonder school valt terug op de gekoppelde ouder als "leerkracht"', async () => {
  const homeChild = { id: 11, username: 'timo', role: 'pupil', school_id: null, class_id: null, data: {}, data_rev: 0 };
  const { app, calls } = await makeApp(homeChild, { parentRows: [{ parent_id: 7 }] });
  const res = await app.inject({ method: 'POST', url: '/api/my/progress', cookies, payload: validBody });
  assert.equal(res.statusCode, 200, res.body);
  const ins = insertCall(calls);
  assert.equal(ins.params[1], 7);
  assert.equal(ins.params[2], 'thuis');
});

test('voortgang: leerling op school zonder enige toewijzing krijgt 400, geen stille silent-fail insert', async () => {
  const pupil = { id: 9, username: 'lena', role: 'pupil', school_id: 2, class_id: 50, data: {}, data_rev: 0 };
  const { app, calls } = await makeApp(pupil, {});
  const res = await app.inject({ method: 'POST', url: '/api/my/progress', cookies, payload: validBody });
  assert.equal(res.statusCode, 400, res.body);
  assert.ok(!insertCall(calls), 'er mag geen INSERT gebeurd zijn');
});

test('voortgang: niet-leerling (bv. leerkracht) krijgt 403', async () => {
  const teacher = { id: 3, username: 'juf', role: 'teacher', school_id: 2, class_id: null, data: {}, data_rev: 0 };
  const { app } = await makeApp(teacher, {});
  const res = await app.inject({ method: 'POST', url: '/api/my/progress', cookies, payload: validBody });
  assert.equal(res.statusCode, 403, res.body);
});

test('voortgang: ontbrekende widgetId/widgetType levert 400 op, niet een kapotte insert', async () => {
  const pupil = { id: 9, username: 'lena', role: 'pupil', school_id: 2, class_id: 50, data: {}, data_rev: 0 };
  const { app, calls } = await makeApp(pupil, { assignmentRows: { byPupil: { teacher_id: 3, board_id: 'bord-a' } } });
  const res = await app.inject({ method: 'POST', url: '/api/my/progress', cookies, payload: { attempts: 1, correct: 1 } });
  assert.equal(res.statusCode, 400, res.body);
  assert.ok(!insertCall(calls));
});

/* "1 opdracht i.p.v. een groep" - de fix zelf zit in math.js (per som loggen
   i.p.v. per blok van 10), maar het datamodel/de server moeten het optionele
   detail (welke som/welk antwoord) wel kunnen bewaren zonder de rest van de
   voortgang-logging te breken bij rommelige/te grote input. */
test('voortgang: detail (welke opdracht) wordt meegegeven aan de insert', async () => {
  const pupil = { id: 9, username: 'lena', role: 'pupil', school_id: 2, class_id: 50, data: {}, data_rev: 0 };
  const { app, calls } = await makeApp(pupil, { assignmentRows: { byPupil: { teacher_id: 3, board_id: 'bord-a' } } });
  const detail = { question: '7 + 8 =', answer: 14, expected: 15, correct: false };
  const res = await app.inject({ method: 'POST', url: '/api/my/progress', cookies, payload: { ...validBody, detail } });
  assert.equal(res.statusCode, 200, res.body);
  assert.deepEqual(insertCall(calls).params[8], detail);
});

test('voortgang: een te grote detail wordt genegeerd zonder de hele log-poging te laten falen', async () => {
  const pupil = { id: 9, username: 'lena', role: 'pupil', school_id: 2, class_id: 50, data: {}, data_rev: 0 };
  const { app, calls } = await makeApp(pupil, { assignmentRows: { byPupil: { teacher_id: 3, board_id: 'bord-a' } } });
  const detail = { question: 'x'.repeat(2000) };
  const res = await app.inject({ method: 'POST', url: '/api/my/progress', cookies, payload: { ...validBody, detail } });
  assert.equal(res.statusCode, 200, res.body);
  assert.equal(insertCall(calls).params[8], null);
});

test('voortgang: een detail dat geen plain object is (array/string) wordt genegeerd', async () => {
  const pupil = { id: 9, username: 'lena', role: 'pupil', school_id: 2, class_id: 50, data: {}, data_rev: 0 };
  const { app, calls } = await makeApp(pupil, { assignmentRows: { byPupil: { teacher_id: 3, board_id: 'bord-a' } } });
  const res = await app.inject({ method: 'POST', url: '/api/my/progress', cookies, payload: { ...validBody, detail: ['niet', 'plain'] } });
  assert.equal(res.statusCode, 200, res.body);
  assert.equal(insertCall(calls).params[8], null);
});

test('voortgang: zonder detail-veld blijft alles zoals voorheen (null, geen fout)', async () => {
  const pupil = { id: 9, username: 'lena', role: 'pupil', school_id: 2, class_id: 50, data: {}, data_rev: 0 };
  const { app, calls } = await makeApp(pupil, { assignmentRows: { byPupil: { teacher_id: 3, board_id: 'bord-a' } } });
  const res = await app.inject({ method: 'POST', url: '/api/my/progress', cookies, payload: validBody });
  assert.equal(res.statusCode, 200, res.body);
  assert.equal(insertCall(calls).params[8], null);
});