'use strict'

const assert = require('node:assert/strict')
const fs = require('node:fs')
const os = require('node:os')
const path = require('node:path')
const test = require('node:test')

const {
  resolveUserRoot,
  planUserPaths,
  prepareUserPaths,
  withConfigArg
} = require('./userpaths')

// 用绝对路径字符串拼测试目录，避免依赖运行平台的盘符写法
const INSTALL = path.resolve('/scoreboard-install')
const LOCAL = path.resolve('/localappdata')
const USER_ROOT = path.join(LOCAL, 'ScoreboardConsole')

function makeRoot(t) {
  const root = fs.mkdtempSync(path.join(os.tmpdir(), 'scoreboard-userpaths-'))
  t.after(() => fs.rmSync(root, { recursive: true, force: true }))
  return root
}

function writeFile(file, text) {
  fs.mkdirSync(path.dirname(file), { recursive: true })
  fs.writeFileSync(file, text)
}

function readFile(file) {
  return fs.readFileSync(file, 'utf8')
}

// 打包态 + 有 %LOCALAPPDATA% 是「接管」的唯一组合
function planFor({ installDir = INSTALL, env = { LOCALAPPDATA: LOCAL }, isPackaged = true } = {}) {
  return planUserPaths({ installDir, userRoot: resolveUserRoot(env), isPackaged })
}

test('打包态三项都落到用户根下，与数据目录同一基座', () => {
  const plan = planFor()
  assert.equal(plan.mode, 'user')
  assert.equal(plan.root, USER_ROOT)
  assert.equal(plan.items.consoleConfig.target, path.join(USER_ROOT, 'console', 'config.json'))
  assert.equal(plan.items.serverConfig.target, path.join(USER_ROOT, 'config.yaml'))
  assert.equal(plan.items.rulesDir.target, path.join(USER_ROOT, 'rules'))
})

test('开发态不接管，三项都指向安装目录里随包的那份', () => {
  const plan = planFor({ isPackaged: false })
  assert.equal(plan.mode, 'install')
  assert.equal(plan.reason, 'dev')
  assert.equal(plan.items.consoleConfig.target, path.join(INSTALL, 'config.json'))
  assert.equal(plan.items.serverConfig.target, path.join(INSTALL, 'config.yaml'))
  assert.equal(plan.items.rulesDir.target, path.join(INSTALL, 'rules'))
})

test('拿不到 %LOCALAPPDATA% 时回落安装目录并记日志', () => {
  const plan = planFor({ env: {} })
  assert.equal(plan.mode, 'install')
  assert.equal(plan.reason, 'no-localappdata')

  const lines = []
  const paths = prepareUserPaths({ plan, log: (line) => lines.push(line) })
  assert.equal(paths.consoleConfig, path.join(INSTALL, 'config.json'))
  assert.equal(paths.rulesDir, path.join(INSTALL, 'rules'))
  assert.equal(paths.serverConfig, null)
  assert.match(lines.join('\n'), /拿不到 %LOCALAPPDATA%/)
})

test('首次运行把随包的三项复制过去，安装目录那份留作模板', (t) => {
  const root = makeRoot(t)
  const installDir = path.join(root, 'install')
  const userRoot = path.join(root, 'localappdata', 'ScoreboardConsole')
  writeFile(path.join(installDir, 'config.json'), '{"server":{"port":19541}}')
  writeFile(path.join(installDir, 'config.yaml'), 'server:\n  port: 19541\n')
  writeFile(path.join(installDir, 'rules', 'cup.yaml'), 'format: scoreboard-rules\n')
  writeFile(path.join(installDir, 'rules', 'README.md'), '说明\n')

  const lines = []
  const paths = prepareUserPaths({
    plan: planUserPaths({ installDir, userRoot, isPackaged: true }),
    log: (line) => lines.push(line)
  })

  assert.equal(paths.consoleConfig, path.join(userRoot, 'console', 'config.json'))
  assert.equal(paths.serverConfig, path.join(userRoot, 'config.yaml'))
  assert.equal(paths.rulesDir, path.join(userRoot, 'rules'))
  assert.equal(readFile(paths.consoleConfig), '{"server":{"port":19541}}')
  assert.equal(readFile(paths.serverConfig), 'server:\n  port: 19541\n')
  assert.equal(readFile(path.join(userRoot, 'rules', 'cup.yaml')), 'format: scoreboard-rules\n')
  assert.equal(readFile(path.join(userRoot, 'rules', 'README.md')), '说明\n')
  // 复制不是移动：安装目录那三份必须原样留着当模板
  assert.equal(readFile(path.join(installDir, 'config.json')), '{"server":{"port":19541}}')
  assert.equal(readFile(path.join(installDir, 'config.yaml')), 'server:\n  port: 19541\n')
  assert.equal(fs.existsSync(path.join(installDir, 'rules', 'cup.yaml')), true)
  assert.equal(lines.filter((line) => line.startsWith('已把 ')).length, 3)
})

test('用户目录已有那份就一律用它，不覆盖也不重拷', (t) => {
  const root = makeRoot(t)
  const installDir = path.join(root, 'install')
  const userRoot = path.join(root, 'localappdata', 'ScoreboardConsole')
  writeFile(path.join(installDir, 'config.json'), '{"server":{"port":1111}}')
  writeFile(path.join(installDir, 'config.yaml'), 'server:\n  port: 1111\n')
  writeFile(path.join(installDir, 'rules', 'cup.yaml'), 'template\n')
  writeFile(path.join(userRoot, 'console', 'config.json'), '{"server":{"port":2222}}')
  writeFile(path.join(userRoot, 'config.yaml'), 'server:\n  port: 2222\n')
  writeFile(path.join(userRoot, 'rules', 'mine.yaml'), 'mine\n')

  const lines = []
  const paths = prepareUserPaths({
    plan: planUserPaths({ installDir, userRoot, isPackaged: true }),
    log: (line) => lines.push(line)
  })

  assert.equal(readFile(paths.consoleConfig), '{"server":{"port":2222}}')
  assert.equal(readFile(paths.serverConfig), 'server:\n  port: 2222\n')
  assert.equal(readFile(path.join(userRoot, 'rules', 'mine.yaml')), 'mine\n')
  // 用户目录里的 rules\ 已存在（哪怕内容和模板不同）→ 不补拷模板里的 cup.yaml
  assert.equal(fs.existsSync(path.join(userRoot, 'rules', 'cup.yaml')), false)
  assert.equal(lines.filter((line) => line.startsWith('已把 ')).length, 0)
})

test('用户目录写不进去时记日志并回落到安装目录，不抛异常', (t) => {
  const root = makeRoot(t)
  const installDir = path.join(root, 'install')
  writeFile(path.join(installDir, 'config.json'), '{}')
  writeFile(path.join(installDir, 'config.yaml'), 'server: {}\n')
  writeFile(path.join(installDir, 'rules', 'cup.yaml'), 'template\n')
  // 用户根的位置被一个文件占着：mkdir/rename 必然失败（ENOTDIR）
  const userRoot = path.join(root, 'blocker')
  writeFile(userRoot, 'not a dir')

  const lines = []
  const paths = prepareUserPaths({
    plan: planUserPaths({ installDir, userRoot, isPackaged: true }),
    log: (line) => lines.push(line)
  })

  assert.equal(paths.consoleConfig, path.join(installDir, 'config.json'))
  assert.equal(paths.serverConfig, null)
  assert.equal(paths.rulesDir, path.join(installDir, 'rules'))
  assert.equal(readFile(paths.consoleConfig), '{}')
  assert.equal(readFile(path.join(installDir, 'rules', 'cup.yaml')), 'template\n')
  assert.equal(lines.filter((line) => line.includes('继续用安装目录里的')).length, 3)
})

test('两边都没有的那一份跳过复制，路径仍指向用户目录', (t) => {
  const root = makeRoot(t)
  const installDir = path.join(root, 'install')
  const userRoot = path.join(root, 'localappdata', 'ScoreboardConsole')
  fs.mkdirSync(installDir, { recursive: true })

  const lines = []
  const paths = prepareUserPaths({
    plan: planUserPaths({ installDir, userRoot, isPackaged: true }),
    log: (line) => lines.push(line)
  })

  // 不接管就没人去读用户目录，服务端会按 config.Load 的默认值跑
  assert.equal(paths.serverConfig, path.join(userRoot, 'config.yaml'))
  assert.equal(fs.existsSync(paths.serverConfig), false)
  assert.equal(lines.filter((line) => line.includes('本次跳过复制')).length, 3)
})

test('规则目录拷贝到位后不留临时目录，重复运行不重做', (t) => {
  const root = makeRoot(t)
  const installDir = path.join(root, 'install')
  const userRoot = path.join(root, 'localappdata', 'ScoreboardConsole')
  writeFile(path.join(installDir, 'config.json'), '{}\n')
  writeFile(path.join(installDir, 'config.yaml'), 'server: {}\n')
  writeFile(path.join(installDir, 'rules', 'cup.yaml'), 'template\n')
  const plan = planUserPaths({ installDir, userRoot, isPackaged: true })

  const first = prepareUserPaths({ plan, log: () => {} })
  assert.deepEqual(fs.readdirSync(userRoot).sort(), ['config.yaml', 'console', 'rules'])
  assert.deepEqual(fs.readdirSync(first.rulesDir), ['cup.yaml'])

  // 第二次启动：目标都在了，不再复制（用户改过的内容不会被模板顶掉）
  writeFile(path.join(userRoot, 'config.yaml'), 'server:\n  port: 3333\n')
  const second = prepareUserPaths({ plan, log: () => {} })
  assert.deepEqual(second, first)
  assert.equal(readFile(path.join(userRoot, 'config.yaml')), 'server:\n  port: 3333\n')
})

test('-config 的值换成解析出的绝对路径，其余参数原样保留', () => {
  assert.deepEqual(withConfigArg(['-config', 'config.yaml'], '/u/config.yaml'), ['-config', '/u/config.yaml'])
  assert.deepEqual(
    withConfigArg(['-config', 'config.yaml', '-project', 'cup'], '/u/config.yaml'),
    ['-config', '/u/config.yaml', '-project', 'cup']
  )
  // 参数里没写 -config 就补一条，否则用户目录里那份永远不会被读到
  assert.deepEqual(withConfigArg(['-project', 'cup'], '/u/config.yaml'), ['-project', 'cup', '-config', '/u/config.yaml'])
  // 不接管（开发态）原样返回
  assert.deepEqual(withConfigArg(['-config', 'config.yaml'], null), ['-config', 'config.yaml'])
  assert.deepEqual(withConfigArg(null, '/u/config.yaml'), ['-config', '/u/config.yaml'])
})