const fs = require('node:fs')
const path = require('node:path')
const ts = require('typescript')

const sourceRoot = path.resolve(__dirname, '..', 'src')
let checked = 0
let errors = 0

function visit(directory) {
  for (const entry of fs.readdirSync(directory, { withFileTypes: true })) {
    const filename = path.join(directory, entry.name)
    if (entry.isDirectory()) {
      visit(filename)
      continue
    }
    if ((!filename.endsWith('.ts') && !filename.endsWith('.vue')) || filename.endsWith('.d.ts')) {
      continue
    }

    let source = fs.readFileSync(filename, 'utf8')
    if (filename.endsWith('.vue')) {
      const match = source.match(/<script setup lang="ts">([\s\S]*?)<\/script>/)
      if (!match) continue
      source = match[1]
    }
    const result = ts.transpileModule(source, {
      compilerOptions: {
        module: ts.ModuleKind.ESNext,
        target: ts.ScriptTarget.ES2022,
      },
      fileName: filename,
      reportDiagnostics: true,
    })
    const diagnostics = (result.diagnostics || []).filter(
      (item) => item.category === ts.DiagnosticCategory.Error,
    )
    checked += 1
    if (!diagnostics.length) continue
    errors += diagnostics.length
    process.stderr.write(`${filename}\n`)
    for (const diagnostic of diagnostics) {
      process.stderr.write(`  ${ts.flattenDiagnosticMessageText(diagnostic.messageText, ' ')}\n`)
    }
  }
}

visit(sourceRoot)
process.stdout.write(`checked=${checked} syntax_errors=${errors}\n`)
process.exitCode = errors ? 1 : 0