import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import test from "node:test";

import { dailyStarlanguageCardSchema, type DailyStarlanguageEvidence } from "../src/lib/daily-starlanguage.ts";
import {
  HOUSE_ACTIONS,
  HOUSE_CAUTIONS,
  HOUSE_LINES,
  PHASE_TAILS,
  SIGN_MOODS,
  composeDailyCard,
  lunarPhase,
  moonAgeDays,
  type LunarPhase,
} from "../src/lib/daily-starlanguage-library.ts";

// BUG-1109: the home 「今日星语」 comes from a fixed library, not a model.

function evidence(overrides: Partial<DailyStarlanguageEvidence> = {}): DailyStarlanguageEvidence {
  return {
    today: "2026-09-30",
    birthTimeVerified: true,
    ascendantSign: "Aries",
    moonSign: "Cancer",
    transitMoonSign: "Capricorn",
    transitMoonHouse: 10,
    vimshottari: { mahadasha: "Saturn", antardasha: null, remainingDays: null, nakshatra: null },
    narayanaSign: null,
    divisional: [],
    transit: null,
    functionalBenefics: [],
    functionalMalefics: [],
    missingLayers: [],
    ...overrides,
  };
}

/** One date per phase and per variant: walk forward until every (phase, variant) pair is covered. */
function datesCovering(): Map<string, string> {
  const found = new Map<string, string>();
  const start = Date.UTC(2026, 0, 1);
  for (let offset = 0; offset < 400 && found.size < 12; offset += 1) {
    const date = new Date(start + offset * 86_400_000).toISOString().slice(0, 10);
    const day = Math.floor((start + offset * 86_400_000) / 86_400_000);
    const key = `${lunarPhase(date)}:${day % 3}`;
    if (!found.has(key)) found.set(key, date);
  }
  return found;
}

test("the library is complete: 12 houses × 3 lines, 4 phases × 2 tails, 2 actions and 2 cautions per house, 12 sign moods", () => {
  for (let house = 1; house <= 12; house += 1) {
    assert.equal(HOUSE_LINES[house]?.length, 3, `house ${house}`);
    assert.equal(HOUSE_ACTIONS[house]?.length, 2);
    assert.equal(HOUSE_CAUTIONS[house]?.length, 2);
  }
  for (const phase of ["new", "waxing", "full", "waning"] as LunarPhase[]) assert.equal(PHASE_TAILS[phase].length, 2);
  assert.equal(Object.keys(SIGN_MOODS).length, 12);
});

test("every house × phase × variant composes a valid card within the schema limits", () => {
  const dates = datesCovering();
  assert.equal(dates.size, 12, "all four phases × three variants are reachable");
  let cards = 0;
  for (let house = 1; house <= 12; house += 1) {
    for (const date of dates.values()) {
      const card = composeDailyCard(evidence({ transitMoonHouse: house, today: date }), date);
      const parsed = dailyStarlanguageCardSchema.safeParse(card);
      assert.ok(parsed.success, `${house} ${date}: ${JSON.stringify(card)}`);
      assert.ok(card.trend.length <= 90 && card.action.length <= 90 && card.caution.length <= 90);
      assert.doesNotMatch(card.trend, /宫主|相位|大运|第\d+宫/, "no jargon in the trend line");
      cards += 1;
    }
  }
  assert.equal(cards, 144);
});

test("same date, same card; consecutive days in the same house read differently", () => {
  const today = composeDailyCard(evidence(), "2026-09-30");
  assert.deepEqual(composeDailyCard(evidence(), "2026-09-30"), today);
  const tomorrow = composeDailyCard(evidence(), "2026-10-01");
  assert.notEqual(tomorrow.trend, today.trend);
});

test("the lunar phase follows the synodic month from a known new moon", () => {
  // 2000-01-06 was a new moon; about 14.8 days later a full moon.
  assert.equal(lunarPhase("2000-01-06"), "new");
  assert.equal(lunarPhase("2000-01-21"), "full");
  assert.equal(lunarPhase("2000-01-13"), "waxing");
  assert.equal(lunarPhase("2000-01-28"), "waning");
  // Known new moon 2026-09-11 (±1 day) and full moon 2026-09-26.
  assert.equal(lunarPhase("2026-09-11"), "new");
  assert.equal(lunarPhase("2026-09-26"), "full");
  const age = moonAgeDays("2026-09-11");
  assert.ok(age < 1.5 || age > 28, `new moon within about a day, age ${age}`);
});

test("without a confirmed birth time the house is not used; the line falls back to the Moon's sign", () => {
  const card = composeDailyCard(evidence({ birthTimeVerified: false }), "2026-09-30");
  assert.match(card.trend, /^今天月亮在摩羯座，/);
  assert.match(card.caution, /出生时间尚未确认/);
  assert.ok(dailyStarlanguageCardSchema.safeParse(card).success);
  const noHouse = composeDailyCard(evidence({ transitMoonHouse: null }), "2026-09-30");
  assert.match(noHouse.trend, /^今天月亮在摩羯座，/);
  // Neither house nor sign: the older evidence composer still gives a valid card.
  const bare = composeDailyCard(evidence({ transitMoonHouse: null, transitMoonSign: null }), "2026-09-30");
  assert.ok(dailyStarlanguageCardSchema.safeParse(bare).success);
});

test("the route calls no model for the daily line", () => {
  const route = readFileSync(new URL("../src/app/api/daily-starlanguage/route.ts", import.meta.url), "utf8");
  assert.match(route, /composeDailyCard\(evidence, today\)/);
  assert.match(route, /source: "library"/);
  assert.doesNotMatch(route, /@\/mastra|getDailyStarlanguageAgent|loadLanguageModelCatalog|generate\(/);
});