import { expect, test } from "@playwright/test";
import path from "node:path";
import { readFile } from "node:fs/promises";

async function projectJson(page: import("@playwright/test").Page) {
  const [download] = await Promise.all([
    page.waitForEvent("download"),
    page.getByRole("button", { name: "プロジェクトを保存" }).click(),
  ]);
  const file = path.join(test.info().outputDir, download.suggestedFilename());
  await download.saveAs(file);
  return JSON.parse(await readFile(file, "utf8"));
}
async function loadProject(page: import("@playwright/test").Page, project: unknown) {
  const chooser = page.waitForEvent("filechooser");
  await page.getByRole("button", { name: "プロジェクトを開く" }).click();
  await (
    await chooser
  ).setFiles({
    name: "case.bkle.json",
    mimeType: "application/json",
    buffer: Buffer.from(JSON.stringify(project)),
  });
}

test("provider, key terminals and diode edit wiring and show collisions", async ({ page }) => {
  await page.goto("/");
  await page.getByRole("button", { name: "ELC" }).click();
  await page.getByTestId("provider-id").fill("MCU");
  await page.getByRole("button", { name: "MCUを追加・更新" }).click();
  await expect(page.getByText(/MCU · mcu · RP2040/)).toBeVisible();
  const view = page.locator(".wiring-box [data-testid=keyboard-view]");
  const first = view.locator(".kv-key").nth(0);
  await first.click();
  await page.locator(".edit-form select").nth(0).selectOption("MCU.GP0");
  await page.locator(".edit-form select").nth(1).selectOption("MCU.GP1");
  await page.locator(".edit-form select").nth(2).selectOption("a-to-b");
  await page.getByRole("button", { name: "配線を保存" }).click();
  await expect(page.getByTestId("unwired-count")).toHaveText("15");
  await expect(first).toHaveClass(/ok/);
  await expect(first).toContainText("GP0/GP1");

  await view.locator(".kv-key").nth(1).click();
  await page.locator(".edit-form select").nth(0).selectOption("MCU.GP0");
  await page.locator(".edit-form select").nth(1).selectOption("MCU.GP1");
  await page.locator(".edit-form select").nth(2).selectOption("a-to-b");
  await page.getByRole("button", { name: "配線を保存" }).click();
  await expect(page.getByText("wiring-collision", { exact: false }).first()).toBeVisible();
  await expect(view.locator(".kv-key.error")).toHaveCount(2);
});

test("batch wiring applies selected keys in row-major PHY order", async ({ page }) => {
  await page.goto("/");
  await page.getByRole("button", { name: "ELC" }).click();
  await page.getByTestId("provider-id").fill("MCU");
  await page.getByRole("button", { name: "MCUを追加・更新" }).click();
  const views = page.locator(".wiring-box [data-testid=keyboard-view]");
  const batchView = views.nth(1);
  await batchView.locator(".kv-key").nth(0).click();
  await batchView.locator(".kv-key").nth(1).click();
  await page.getByTestId("batch-row-select").selectOption("MCU.GP0");
  await page.getByRole("button", { name: "rowへ追加" }).click();
  await page.getByTestId("batch-col-select").selectOption("MCU.GP1");
  await page.getByRole("button", { name: "colへ追加" }).click();
  await page.getByTestId("batch-col-select").selectOption("MCU.GP2");
  await page.getByRole("button", { name: "colへ追加" }).click();
  await page.getByTestId("batch-wire").click();
  await expect(page.getByTestId("batch-preview")).toBeVisible();
  await expect(page.getByTestId("batch-preview").locator("tbody tr").nth(0)).toContainText("MCU.GP0");
  await page.getByTestId("batch-confirm").click();
  await expect(page.getByTestId("unwired-count")).toHaveText("14");
  await expect(views.first().locator(".kv-key").nth(0)).toContainText("GP0/GP1");
  await expect(views.first().locator(".kv-key").nth(1)).toContainText("GP0/GP2");
});

test("batch wiring previews overwritten assignments and blocks insufficient capacity", async ({ page }) => {
  await page.goto("/");
  await page.getByRole("button", { name: "ELC" }).click();
  await page.getByTestId("provider-id").fill("MCU");
  await page.getByRole("button", { name: "MCUを追加・更新" }).click();
  const view = page.locator(".wiring-box [data-testid=keyboard-view]");
  await view.locator(".kv-key").first().click();
  await page.locator(".edit-form select").nth(0).selectOption("MCU.GP5");
  await page.locator(".edit-form select").nth(1).selectOption("MCU.GP6");
  await page.getByRole("button", { name: "配線を保存" }).click();
  const batchView = page.locator(".wiring-box [data-testid=keyboard-view]").nth(1);
  for (let i = 0; i < 3; i++) await batchView.locator(".kv-key").nth(i).click();
  await page.getByTestId("batch-row-select").selectOption("MCU.GP0");
  await page.getByRole("button", { name: "rowへ追加" }).click();
  await page.getByTestId("batch-col-select").selectOption("MCU.GP1");
  await page.getByRole("button", { name: "colへ追加" }).click();
  await page.getByTestId("batch-wire").click();
  await expect(page.getByTestId("batch-capacity-error")).toBeVisible();
  await expect(page.getByTestId("batch-confirm")).toBeDisabled();
  await page.getByTestId("batch-col-select").selectOption("MCU.GP2");
  await page.getByRole("button", { name: "colへ追加" }).click();
  await page.getByTestId("batch-wire").click();
  const rows = page.getByTestId("batch-preview").locator("tbody tr");
  await expect(rows).toHaveCount(3);
  await expect(rows.first()).toContainText("上書き");
});

test("diode direction is part of collision identity and unknown MCU parts accept free pin names", async ({
  page,
}) => {
  await page.goto("/");
  let source = await projectJson(page);
  const [k1, k2] = source.idx.order;
  source.elc.providers = [{ id: "MCU", kind: "mcu", part: "RP2040" }];
  source.elc.keys = [
    { key: k1, detect: "contact", terminals: { a: "MCU.GP0", b: "MCU.GP1" }, diode: "a-to-b" },
    { key: k2, detect: "contact", terminals: { a: "MCU.GP0", b: "MCU.GP1" }, diode: "b-to-a" },
  ];
  await loadProject(page, source);
  await page.getByRole("button", { name: "ELC" }).click();
  await expect(page.getByText("wiring-collision", { exact: false })).toHaveCount(0);
  source.elc.keys[1].diode = "a-to-b";
  await loadProject(page, source);
  await page.getByRole("button", { name: "ELC" }).click();
  await expect(page.getByText("wiring-collision", { exact: false }).first()).toBeVisible();

  await page.getByTestId("provider-id").fill("ALT");
  await page.locator("input[list=mcu-parts]").fill("Unknown-MCU");
  await page.getByRole("button", { name: "MCUを追加・更新" }).click();
  await expect(page.getByText("未知の品番はピン名を自由入力します。")).toBeVisible();
  const key = page.locator(".wiring-box .kv-key").nth(2);
  await key.click();
  await page.getByLabel("a端子自由入力").fill("ALT.PIN_X");
  await page.getByLabel("b端子自由入力").fill("ALT.PIN_Y");
  await page.getByRole("button", { name: "配線を保存" }).click();
  await expect(page.getByTestId("unwired-count")).toHaveText("13");
});

test("LED chain candidates include only per-key LED keys and @led parts across all variants", async ({
  page,
}) => {
  await page.goto("/");
  const source = await projectJson(page);
  const keys = [] as any[];
  const walk = (nodes: any[]) =>
    nodes.forEach((n) => {
      if (n.type === "key") keys.push(n);
      else if (n.type === "cluster") walk(n.children);
      else if (n.type === "variantGroup") n.children.forEach((v: any) => walk(v.children));
    });
  walk(source.phy.root);
  keys[0].perKeyLED = true;
  keys[1].perKeyLED = false;
  source.phy.root.push({
    type: "component",
    id: "cmp-test-led",
    transform: { x: 0, y: 0, rotation: 0 },
    partGroup: "@led",
  });
  source.phy.root.push({
    type: "component",
    id: "cmp-test-other",
    transform: { x: 0, y: 0, rotation: 0 },
    partGroup: "@screw",
  });
  await loadProject(page, source);
  await page.getByRole("button", { name: "ELC" }).click();
  await page.getByLabel("チェーンID").fill("LED1");
  await page.getByLabel("データピン").fill("MCU.DATA");
  await page.getByRole("button", { name: "作成" }).click();
  await expect(page.getByTestId("led-candidate").locator(`option[value="${keys[0].id}"]`)).toHaveCount(1);
  await expect(page.getByTestId("led-candidate").locator('option[value="cmp-test-led"]')).toHaveCount(1);
  await expect(page.getByTestId("led-candidate").locator(`option[value="${keys[1].id}"]`)).toHaveCount(0);
  await expect(page.getByTestId("led-candidate").locator('option[value="cmp-test-other"]')).toHaveCount(0);
});