import assert from 'node:assert/strict';
import { createSeedDatabase } from '../src/data/seed.mjs';

const state = createSeedDatabase({ nowIso: () => '2026-07-21T00:00:00.000Z', hashPassword: password => `test-${password}` });
const mainExam = state.exams.find(exam => exam.id === 'exam_autumn_2026');
const mainRegistrations = state.registrations.filter(registration => registration.examId === mainExam.id);
const mainRegistrationIds = new Set(mainRegistrations.map(registration => registration.id));
const mainResults = state.results.filter(result => mainRegistrationIds.has(result.registrationId));
const mainPreferences = state.admissionRecords.filter(record => record.kind === 'preference' && record.examId === mainExam.id && Number(record.payload?.round || 1) === 1);
const specialtyProfiles = state.candidateProfiles.filter(profile => profile.specialtyCategory && profile.specialtyType);
const specialtyUserIds = new Set(specialtyProfiles.map(profile => profile.userId));

assert.ok(state.exams.length >= 2, '演示数据至少包含两场考试');
assert.equal(state.schools.filter(school => school.isSourceSchool).length, 5, '演示数据应包含 5 所生源校');
assert.equal(state.schools.filter(school => school.isAdmissionSchool).length, 3, '演示数据应包含 3 所招生校');
assert.deepEqual(Object.fromEntries(mainExam.subjects.map(subject => [subject.name, subject.fullScore])), {
  语文: 120, 数学: 120, 外语: 120, 历史: 75, 政治: 75, 物理: 80, 化学: 70, 实验: 20, 信息技术: 10
});
assert.equal(mainRegistrations.length, 1200, '主考试应有 1200 名考生');
assert.ok(mainRegistrations.every(registration => registration.status === 'approved' && registration.subjectIds.length === 9), '主考试报名应全部审核通过并包含 9 科');
assert.equal(mainResults.length, 1200 * 9, '每名主考试考生都应有完整的 9 科成绩');
assert.ok(mainResults.every(result => result.published), '主考试成绩应全部发布');
assert.equal(mainPreferences.length, 1200, '主考试每名考生都应完成第一轮志愿');
assert.ok(mainPreferences.every(record => record.status === 'submitted' && record.payload.submissionCount === 1 && record.payload.choices.length === 3), '第一轮志愿应提交并填满 3 个招生校');
assert.equal(specialtyProfiles.length, 150, '应有 150 名特长生');
assert.ok(mainRegistrations.filter(registration => specialtyUserIds.has(registration.userId)).every(registration => registration.featureScore >= 80 && registration.featureScore <= 100), '特长生特征分应分布在 80-100 分');
assert.deepEqual(new Set(state.users.map(user => user.passwordHash)), new Set(['test-12345678']), '所有预置账号密码应统一为 12345678');

for (const subject of mainExam.subjects) {
  const scores = mainResults.filter(result => result.subjectId === subject.id).map(result => result.score);
  const mean = scores.reduce((sum, score) => sum + score, 0) / scores.length;
  const standardDeviation = Math.sqrt(scores.reduce((sum, score) => sum + (score - mean) ** 2, 0) / scores.length);
  assert.ok(mean > subject.fullScore * 0.66 && mean < subject.fullScore * 0.78, `${subject.name}平均分应符合正态样本预期`);
  assert.ok(standardDeviation > subject.fullScore * 0.09 && standardDeviation < subject.fullScore * 0.18, `${subject.name}标准差应符合正态样本预期`);
  assert.ok(scores.every(score => score >= 0 && score <= subject.fullScore), `${subject.name}成绩不得超出满分`);
}

console.log('演示数据规模、学校角色、科目、志愿、特长生、成绩分布与密码校验通过');