import assert from 'node:assert/strict'
import fs from 'node:fs'
import os from 'node:os'
import path from 'node:path'
import test from 'node:test'

import { generateSprite, isSpriteMode } from '../dist/index.js'

const CHECK_SVG = '<svg viewBox="0 0 24 24"><path fill="currentColor" d="M9 16 4 11l2-2 3 3 8-8 2 2z"/></svg>'
const UNSAFE_SVG = '<svg viewBox="0 0 16 16"><path d="M1 1h14v14H1z"/></svg>'

function fixture() {
  const rootDir = fs.mkdtempSync(path.join(os.tmpdir(), 'svg-sprites-standalone-'))
  const iconsDir = path.join(rootDir, 'icons')
  fs.mkdirSync(iconsDir)
  fs.writeFileSync(path.join(iconsDir, 'check.svg'), CHECK_SVG)
  fs.writeFileSync(path.join(iconsDir, 'folder open.svg'), UNSAFE_SVG)
  return rootDir
}

function generatedFiles(rootDir) {
  return fs.readdirSync(path.join(rootDir, '.svg-sprite')).sort()
}

test('recognizes all standalone exact modes', () => {
  assert.equal(isSpriteMode('standalone'), true)
  assert.equal(isSpriteMode('standalone@vite'), true)
  assert.equal(isSpriteMode('standalone@webpack'), true)
  assert.equal(isSpriteMode('standalone@rollup'), false)
})

test('standalone generates an asset and deployment-neutral JSON manifest', async () => {
  const rootDir = fixture()
  const result = await generateSprite(rootDir, {
    mode: 'standalone',
    name: 'app-icons',
    generatedNotice: false,
  })

  assert.equal(result.mode, 'standalone')
  assert.equal(result.target, 'static')
  assert.equal(result.iconCount, 2)
  assert.equal(result.spritePath, path.join(rootDir, '.svg-sprite', 'sprite.svg'))
  assert.equal(result.manifestPath, path.join(rootDir, '.svg-sprite', 'svg-sprite.manifest.json'))
  assert.deepEqual(generatedFiles(rootDir), [
    'sprite.svg',
    'state.json',
    'svg-sprite.manifest.json',
  ])

  const source = fs.readFileSync(result.spritePath, 'utf8')
  assert.match(source, /@generated by @gromlab\/svg-sprites/)
  assert.match(source, /id="check"/)

  const manifest = JSON.parse(fs.readFileSync(result.manifestPath, 'utf8'))
  assert.equal(manifest.name, 'app-icons')
  assert.equal(manifest.mode, 'standalone')
  assert.equal(manifest.target, 'static')
  assert.match(manifest.generated, /@generated by @gromlab\/svg-sprites/)
  assert.equal('spriteUrl' in manifest, false)
  assert.equal('componentName' in manifest, false)
  assert.equal(manifest.icons.find(({ name }) => name === 'check').id, 'check')
  assert.match(
    manifest.icons.find(({ name }) => name === 'folder open').id,
    /^icon-[a-f0-9]{16}$/,
  )

  const state = JSON.parse(fs.readFileSync(path.join(rootDir, '.svg-sprite', 'state.json'), 'utf8'))
  assert.deepEqual(state.owner, { mode: 'standalone', contractVersion: 2 })
})

test('standalone Vite generates a typed facade and resolved manifest', async () => {
  const rootDir = fixture()
  const result = await generateSprite(rootDir, {
    mode: 'standalone@vite',
    name: 'icons',
    generatedNotice: false,
  })

  assert.equal(result.target, 'vite')
  assert.deepEqual(generatedFiles(rootDir), [
    'icon-data.d.ts',
    'icon-data.js',
    'index.d.ts',
    'index.js',
    'sprite.svg',
    'state.json',
    'svg-sprite.manifest.d.ts',
    'svg-sprite.manifest.js',
  ])

  const entry = fs.readFileSync(path.join(rootDir, '.svg-sprite', 'index.js'), 'utf8')
  const declarations = fs.readFileSync(path.join(rootDir, '.svg-sprite', 'index.d.ts'), 'utf8')
  const manifest = fs.readFileSync(result.manifestPath, 'utf8')
  assert.match(entry, /sprite\.svg\?no-inline/)
  assert.match(entry, /export const iconsSpriteUrl = spriteUrl/)
  assert.match(entry, /export function getIconsIconHref\(icon\)/)
  assert.match(declarations, /getIconsIconHref\(icon: IconsIconName\): string/)
  assert.match(manifest, /"mode": "standalone@vite"/)
  assert.match(manifest, /export const spriteManifest = createSpriteManifest\(spriteUrl\)/)
  assert.doesNotMatch(entry, /react|jsx|\.css/)
})

test('standalone Webpack generates a typed facade and resolved manifest', async () => {
  const rootDir = fixture()
  const result = await generateSprite(rootDir, {
    mode: 'standalone@webpack',
    name: 'icons',
    generatedNotice: false,
  })

  assert.equal(result.target, 'webpack')
  const entry = fs.readFileSync(path.join(rootDir, '.svg-sprite', 'index.js'), 'utf8')
  const manifest = fs.readFileSync(result.manifestPath, 'utf8')
  assert.match(entry, /new URL\('\.\/sprite\.svg', import\.meta\.url\)\.href/)
  assert.match(entry, /export function getIconsIconHref\(icon\)/)
  assert.match(manifest, /"mode": "standalone@webpack"/)
  assert.match(manifest, /new URL\('\.\/sprite\.svg', import\.meta\.url\)\.href/)
  assert.doesNotMatch(entry, /react|jsx|\.css/)
})

test('switching standalone modes removes obsolete managed files', async () => {
  const rootDir = fixture()
  const options = { name: 'icons', generatedNotice: false }

  await generateSprite(rootDir, { ...options, mode: 'standalone@vite' })
  fs.writeFileSync(path.join(rootDir, '.svg-sprite', 'user.txt'), 'keep')
  await generateSprite(rootDir, { ...options, mode: 'standalone' })

  assert.deepEqual(generatedFiles(rootDir), [
    'sprite.svg',
    'state.json',
    'svg-sprite.manifest.json',
    'user.txt',
  ])
  assert.equal(fs.readFileSync(path.join(rootDir, '.svg-sprite', 'user.txt'), 'utf8'), 'keep')

  await generateSprite(rootDir, { ...options, mode: 'standalone@webpack' })
  assert.equal(fs.existsSync(path.join(rootDir, '.svg-sprite', 'svg-sprite.manifest.json')), false)
  assert.equal(fs.existsSync(path.join(rootDir, '.svg-sprite', 'index.js')), true)
  assert.equal(fs.existsSync(path.join(rootDir, '.svg-sprite', 'user.txt')), true)
})