import type { FileChange } from './types'

/**
 * Build a formatted commit message based on the upload context.
 *
 * Symbols:
 * - ✅ = new file
 * - 🔄 = modified file
 * - ❌ = deleted file
 * - Unchanged files are omitted entirely
 */
export function buildCommitMessage(
  folderName: string,
  modelFilename: string,
  textureNames: string[],
  compressed: boolean,
  isReplace: boolean,
  fileChanges: Map<string, FileChange>,
  deletedFileNames: string[],
): string {
  const title = isReplace
    ? `update: upload-gltf update -> ${folderName}`
    : `update: upload-gltf add a new model -> ${folderName}`

  const lines: string[] = [title, '']

  // Model section — show status for new, changed, or unchanged
  const modelChange = fileChanges.get(modelFilename.toLowerCase())
  if (modelChange === 'new') {
    lines.push('📦 Model')
    lines.push(`  ✅ ${modelFilename}${compressed ? ' (compressed)' : ''}`)
  } else if (modelChange === 'changed') {
    lines.push('📦 Model')
    lines.push(`  🔄 ${modelFilename}${compressed ? ' (compressed)' : ''}`)
  } else if (modelChange === 'unchanged') {
    lines.push('📦 Model')
    lines.push(`  ↔️ ${modelFilename} (inchange)`)
  }

  const textureLines: string[] = []

  for (const textureName of textureNames) {
    const change = fileChanges.get(textureName.toLowerCase())
    if (change === 'new') {
      textureLines.push(`  ✅ ${textureName}`)
    } else if (change === 'changed') {
      textureLines.push(`  🔄 ${textureName}`)
    }
  }

  for (const name of deletedFileNames) {
    textureLines.push(`  ❌ ${name} (supprime)`)
  }

  if (textureLines.length > 0) {
    lines.push('🎨 Textures')
    lines.push(...textureLines)
  }

  return lines.join('\n')
}