import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import React from "react";
import { renderToStaticMarkup } from "react-dom/server";
import test from "node:test";

import { ChartVedicTab } from "../src/components/chart-page/chart-vedic-tab.tsx";
import { VedicChartSvg } from "../src/components/personal-report/vedic-chart-svg.tsx";
import { assembleChartView } from "../src/lib/chart-view-load.ts";
import { chartViewOkSchema, type ChartViewOk } from "../src/lib/chart-view-contract.ts";
import { chartViewEngineCacheKey, chartViewEngineCachePath } from "../src/lib/chart-view-engine.ts";
import { CHART_VIEW_COPY, SIGN_ORDER } from "../src/lib/chart-view-labels.ts";

Object.assign(globalThis, { React });

// Real engine output only: the chart-page golden and the ephemeris page's
// `/api/chart` packet for 2026-09-15 noon (same engine route, same Raman mean).
const golden = JSON.parse(readFileSync(new URL("./fixtures/chart-view-golden.json", import.meta.url), "utf8"));
const transitPacket = JSON.parse(readFileSync(new URL("./fixtures/ephemeris-chart-transit-2026-09-15.golden.json", import.meta.url), "utf8"));
const serviceSource = readFileSync(new URL("../src/lib/chart-view-service.ts", import.meta.url), "utf8");

const profile = {
  name: "示例",
  date: "1990-06-15",
  time: "12:00",
  placeLabel: "北京",
  latitude: 39.9042,
  longitude: 116.4074,
  timezoneOffset: 8,
  timezoneId: "Asia/Shanghai",
  ayanamsa: "raman",
  birthTimeStatus: "confirmed",
};

type Call = { path: string; body: Record<string, unknown>; cacheScope?: string };

async function assemble(layers: ("transit" | "varga")[]): Promise<{ view: ChartViewOk; calls: Call[] }> {
  const calls: Call[] = [];
  const result = await assembleChartView({
    userId: "user-1",
    profile,
    asOf: "2026-09-15",
    layers,
    postEngine: async (path, body, cacheScope) => {
      calls.push({ path, body, cacheScope });
      if (path === "/api/chart" && cacheScope?.startsWith("transit:")) return { status: "ok", payload: transitPacket };
      if (path === "/api/chart") return { status: "ok", payload: golden.chart };
      if (path === "/api/varga_full") return { status: "ok", payload: golden.varga_full };
      return { status: "http_error", path, elapsedMs: 1, httpStatus: 500 };
    },
  });
  assert.equal(result.body.status, "ok");
  return { view: chartViewOkSchema.parse(result.body), calls };
}

function signIndex(sign: string): number {
  return (SIGN_ORDER as readonly string[]).indexOf(sign);
}

/** House whose clip group holds the lagna mark. */
function ascendantMarkHouses(svg: string): number[] {
  return svg.split('clip-path="url(#').slice(1).flatMap((chunk) => {
    const house = Number(chunk.match(/-house-(\d+)\)/)?.[1]);
    const body = chunk.split("</g></g>")[0] ?? "";
    return body.includes("personal-report-chart-asc") ? [house] : [];
  });
}

test("the Moon chart is the D1 counted from the Moon's sign, projected without a request", async () => {
  const { view, calls } = await assemble([]);
  assert.deepEqual(calls.map((call) => call.path), ["/api/chart"], "no extra engine call");
  const moon = view.vedic.moon;
  assert.ok(moon);
  const natalMoonSign = golden.chart.planets.Moon.sign as string;
  const natalAsc = golden.chart.ascendant.sign as string;
  assert.equal(moon.moonSign, natalMoonSign);
  assert.equal(moon.chart.houses[0]!.sign, natalMoonSign, "house 1 is the Moon's sign");
  assert.equal(moon.ascendantHouse, ((signIndex(natalAsc) - signIndex(natalMoonSign) + 12) % 12) + 1);
  for (const row of moon.planets) {
    const natal = view.vedic.planets.find((item) => item.name === row.name)!;
    assert.equal(row.sign, natal.sign, "signs are the D1's");
    assert.equal(row.degreeInSign, natal.degreeInSign);
    assert.equal(row.house, ((signIndex(row.sign) - signIndex(natalMoonSign) + 12) % 12) + 1);
  }
  assert.equal(moon.planets.find((row) => row.name === "Moon")?.house, 1);

  const markup = renderToStaticMarkup(React.createElement(ChartVedicTab, { view, vargaId: "MOON", onSelectVarga: () => {} }));
  assert.match(markup, /<caption>月亮盘 · 以月亮所在星座（[^）]+）为第 1 宫<\/caption>/);
  assert.deepEqual(ascendantMarkHouses(markup), [moon.ascendantHouse], "the lagna mark sits in the natal ascendant's house");
});

test("a chart counted from the ascendant still draws the lagna mark in house 1 only", async () => {
  const { view } = await assemble([]);
  const svg = renderToStaticMarkup(React.createElement(VedicChartSvg, { chart: view.vedic.vargas[0]!.chart, ariaLabel: "D1" }));
  assert.deepEqual(ascendantMarkHouses(svg), [1]);
});

test("the transit layer posts today's noon with the natal ayanamsa and node mode, under its own cache scope", async () => {
  const { view, calls } = await assemble(["transit"]);
  const natal = calls.find((call) => call.path === "/api/chart" && !call.cacheScope)!;
  const transit = calls.find((call) => call.cacheScope?.startsWith("transit:"))!;
  assert.ok(transit, "transit call made");
  assert.equal(transit.path, "/api/chart");
  assert.equal(transit.cacheScope, "transit:2026-09-15");
  assert.deepEqual([transit.body.year, transit.body.month, transit.body.day, transit.body.hour, transit.body.minute], [2026, 9, 15, 12, 0]);
  assert.equal(transit.body.ayanamsa, natal.body.ayanamsa);
  assert.equal(transit.body.node_mode, natal.body.node_mode);
  assert.equal(transit.body.tz, natal.body.tz);
  assert.equal(transit.body.skip_vedastro_main_entry_overview, true);

  assert.equal(view.transit.status, "ok");
  if (view.transit.status !== "ok") throw new Error("expected transit ok");
  assert.equal(view.transit.date, "2026-09-15");
  assert.equal(view.transit.time, "12:00");
  assert.equal(view.transit.timezoneLabel, "Asia/Shanghai");
  const natalAsc = golden.chart.ascendant.sign as string;
  assert.equal(view.transit.rows.length, 9);
  for (const row of view.transit.rows) {
    const engine = transitPacket.planets[row.name];
    assert.equal(row.sign, engine.sign);
    assert.equal(row.natalHouse, ((signIndex(row.sign) - signIndex(natalAsc) + 12) % 12) + 1);
    assert.equal(row.natalPlanetHouse, golden.chart.planets[row.name].house);
  }
  assert.equal(view.transit.chart.houses[0]!.sign, natalAsc, "house 1 is the natal ascendant");

  const markup = renderToStaticMarkup(React.createElement(ChartVedicTab, { view, vargaId: "TRANSIT", onSelectVarga: () => {} }));
  assert.match(markup, /<caption>行运 · 2026-09-15 12:00（Asia\/Shanghai）<\/caption>/);
  for (const column of ["行星", "今天的位置", "速度", "落本命", "本命同星"]) assert.match(markup, new RegExp(`<th scope="col">${column}</th>`));
  assert.ok(markup.includes(CHART_VIEW_COPY.transitNote));
});

test("the transit tab waits, then fails with the layer copy, and is never requested for D1", async () => {
  const { view, calls } = await assemble([]);
  assert.equal(calls.some((call) => call.cacheScope), false);
  assert.equal(view.transit.status, "unavailable");
  const render = (props: Record<string, unknown>) => renderToStaticMarkup(React.createElement(ChartVedicTab, { view, vargaId: "TRANSIT", onSelectVarga: () => {}, ...props }));
  assert.match(render({ pending: true }), /data-skeleton="true"/);
  assert.ok(render({ pending: true }).includes(CHART_VIEW_COPY.waitingChart));
  const failed = render({ pending: false, failure: "engine_busy" });
  assert.ok(failed.includes(CHART_VIEW_COPY.busy));
  assert.doesNotMatch(failed, /data-skeleton/);
});

test("a scoped engine call can never share the natal chart's cache entry", () => {
  const base = { userId: "u", subjectId: "s", date: "1990-06-15", time: "12:00", latitude: 1, longitude: 2, timezoneOffset: 8, ayanamsa: "raman", nodeMode: "mean" };
  const natal = chartViewEngineCacheKey({ ...base, path: chartViewEngineCachePath("/api/chart") });
  const today = chartViewEngineCacheKey({ ...base, path: chartViewEngineCachePath("/api/chart", "transit:2026-09-15") });
  const tomorrow = chartViewEngineCacheKey({ ...base, path: chartViewEngineCachePath("/api/chart", "transit:2026-09-16") });
  assert.notEqual(natal, today);
  assert.notEqual(today, tomorrow);
  assert.equal(chartViewEngineCachePath("/api/chart"), "/api/chart", "unscoped keys are unchanged");
  assert.match(serviceSource, /path: chartViewEngineCachePath\(path, cacheScope\)/);
});