import { expect, type Page, test } from "@playwright/test"
import { api, apiPage, deleteAll } from "./utils/api"

/**
 * The dashboard editor's quiet failures.
 *
 * Two are about a placement that nothing complains about: the grid library
 * corrects a stored layout against the columns alone, so shrinking the canvas
 * hides whatever now falls past its bottom edge; and the header that drags a
 * widget used to also select it, so every drop opened the settings panel.
 *
 * The third is what a widget drawn without its title is dragged by, since the
 * header it used to be dragged by is the thing that is gone.
 */

const dashboardName = `test_editor_${Date.now().toString(36)}`

/** The layout the editor is opened on. `below` cannot compact above `top`. */
const WIDGETS = [
  {
    id: "top",
    type: "clock",
    title: "Top",
    layout: { lg: { x: 0, y: 0, w: 8, h: 4 } },
    config: {},
  },
  {
    id: "below",
    type: "clock",
    title: "Below",
    layout: { lg: { x: 0, y: 8, w: 4, h: 2 } },
    config: {},
  },
]

test.use({ storageState: "playwright/.auth/user.json" })

test.describe.configure({ mode: "serial" })

test.beforeAll(async ({ browser }) => {
  const page = await apiPage(browser)
  await api(page, `/dashboards/${dashboardName}`, { method: "POST" })
  // The working copy, which is what a new dashboard may be: the editor reads
  // the draft, so the setup writes one rather than publishing.
  const dashboard = await (
    await api(page, `/dashboards/${dashboardName}?draft=true`)
  ).json()
  dashboard.columns = 12
  dashboard.canvas_width = 1920
  dashboard.canvas_height = 1080
  dashboard.widgets = WIDGETS
  await api(page, `/dashboards/${dashboardName}`, {
    method: "PUT",
    data: dashboard,
  })
  await page.close()
})

test.afterAll(async ({ browser }) => {
  await deleteAll(browser, [`/dashboards/${dashboardName}`])
})

/** Where each widget is stored right now, as the editor last saved it. */
async function placements(page: Page) {
  const doc = await (
    await api(page, `/dashboards/${dashboardName}?draft=true`)
  ).json()
  const widgets = doc.widgets as {
    id: string
    layout: { lg: { x: number; y: number } }
  }[]
  return Object.fromEntries(
    widgets.map((widget) => [widget.id, widget.layout.lg]),
  )
}

async function openEditor(page: Page) {
  await page.goto(`/dashboards/${dashboardName}?edit=true`)
  await page
    .getByTestId("widget-frame")
    .first()
    .waitFor({ state: "visible", timeout: 15000 })
}

test("shrinking the canvas warns about what falls off it, and re-packs", async ({
  page,
}) => {
  await openEditor(page)

  const notice = page.getByTestId("canvas-clipped")
  await expect(notice).toBeHidden()

  // Where `below` sits before the reflow — anywhere but the top shelf.
  const before = (await placements(page)).below.y
  expect(
    before,
    "the setup layout was already packed across the columns",
  ).toBeGreaterThan(0)

  await page.getByTestId("edit-dashboard").click()
  // 400px is four grid rows, which the four-row `top` fills on its own.
  await page.getByTestId("canvas-height").fill("400")

  await expect(notice).toBeVisible()
  await expect(notice).toContainText("1 widget")

  await page.getByTestId("reflow-canvas").click()
  await expect(notice).toBeHidden()

  // A hidden notice on its own could just be a re-render. The stored draft is
  // what a panel will read, so that is what has to have moved.
  await expect
    .poll(async () => (await placements(page)).below.y, {
      message: "the reflow was never saved",
      timeout: 10000,
    })
    .toBeLessThan(before)
})

test("the drag handle moves a widget without selecting it", async ({
  page,
}) => {
  await openEditor(page)

  const frame = page.getByTestId("widget-frame").filter({ hasText: "Top" })
  const settings = page.getByTestId("widget-settings")

  // A press on the grip is the start of a move; the click ending a drag must
  // not open the panel behind it.
  await frame.locator(".widget-grip").click()
  await expect(settings).toBeHidden()

  // The other half: selection still works, it just lives on the body now.
  await frame.click()
  await expect(settings).toBeVisible()
})

test("clicking off the widgets puts the settings panel away", async ({
  page,
}) => {
  await openEditor(page)

  const settings = page.getByTestId("widget-settings")
  await page.getByTestId("widget-frame").filter({ hasText: "Top" }).click()
  await expect(settings).toBeVisible()

  // The margin around the canvas is not a widget, the way the flow pane is not
  // a node.
  await page.getByTestId("dashboard-canvas").click({ position: { x: 8, y: 8 } })
  await expect(settings).toBeHidden()
})

test("a widget without its title can still be dragged and picked", async ({
  page,
}) => {
  await openEditor(page)

  const frame = page.getByTestId("widget-frame").filter({ hasText: "Below" })
  const settings = page.getByTestId("widget-settings")
  await frame.click()
  await expect(settings).toBeVisible()

  await page.getByTestId("widget-show-title").click()

  // The title is gone from the tile — and so is the header that used to be the
  // handle, so the editor grows one of its own rather than losing the widget.
  const untitled = page
    .getByTestId("widget-frame")
    .filter({ hasNotText: "Top" })
  await expect(untitled).not.toContainText("Below")
  await expect(untitled.locator(".widget-grip")).toBeVisible()

  await untitled.locator(".widget-grip").click()
  // A press on the grip is a move, not a pick — as it is with a header.
  await expect(page.getByTestId("widget-settings")).toBeVisible()
})

test("a palette is pasted as a link and read as roles", async ({ page }) => {
  await openEditor(page)
  await page.getByTestId("edit-dashboard").click()

  await page
    .getByTestId("dashboard-palette-input")
    .fill("https://coolors.co/palette/264653-2a9d8f-e9c46a-f4a261-e76f51")

  const swatches = page.getByTestId("dashboard-palette").getByRole("img")
  await expect(swatches).toHaveCount(5)
  await expect(swatches.first()).toHaveAttribute("aria-label", /Background/)

  // The roles are positional, so turning the list is how a palette that
  // arrived in the wrong order is put right.
  await page.getByTestId("dashboard-palette-rotate").click()
  await expect(swatches.first()).toHaveAttribute(
    "aria-label",
    /Background #2a9d8f/,
  )

  // And the canvas beside the panel wears it.
  await expect(page.getByTestId("canvas-surface")).toHaveAttribute(
    "data-palette",
    "",
  )
})