import type { TailwindcssPatchCommand, TailwindcssPatchCommandOptionDefinition } from './types'

import process from 'node:process'
import { DEFAULT_TOKEN_REPORT } from './token-output'

export interface TailwindcssPatchCommandDefinition {
  description: string
  optionDefs: TailwindcssPatchCommandOptionDefinition[]
}

export type TailwindcssPatchCommandDefinitions = Record<TailwindcssPatchCommand, TailwindcssPatchCommandDefinition>

function createCwdOptionDefinition(description: string = 'Working directory'): TailwindcssPatchCommandOptionDefinition {
  return {
    flags: '--cwd <dir>',
    description,
    config: { default: process.cwd() },
  }
}

export function buildDefaultCommandDefinitions(): TailwindcssPatchCommandDefinitions {
  return {
    install: {
      description: 'Apply Tailwind CSS runtime patches',
      optionDefs: [createCwdOptionDefinition()],
    },
    extract: {
      description: 'Collect generated class names into a cache file',
      optionDefs: [
        createCwdOptionDefinition(),
        { flags: '--output <file>', description: 'Override output file path' },
        { flags: '--format <format>', description: 'Output format (json|lines)' },
        { flags: '--css <file>', description: 'Tailwind CSS entry CSS when using v4' },
        { flags: '--no-write', description: 'Skip writing to disk' },
      ],
    },
    tokens: {
      description: 'Extract Tailwind tokens with file/position metadata',
      optionDefs: [
        createCwdOptionDefinition(),
        { flags: '--output <file>', description: 'Override output file path', config: { default: DEFAULT_TOKEN_REPORT } },
        {
          flags: '--format <format>',
          description: 'Output format (json|lines|grouped-json)',
          config: { default: 'json' },
        },
        {
          flags: '--group-key <key>',
          description: 'Grouping key for grouped-json output (relative|absolute)',
          config: { default: 'relative' },
        },
        { flags: '--no-write', description: 'Skip writing to disk' },
      ],
    },
    init: {
      description: 'Generate a tailwindcss-patch config file',
      optionDefs: [createCwdOptionDefinition()],
    },
    migrate: {
      description: 'Migrate deprecated config fields to modern options',
      optionDefs: [
        createCwdOptionDefinition(),
        { flags: '--config <file>', description: 'Migrate a specific config file path' },
        { flags: '--workspace', description: 'Scan workspace recursively for config files' },
        { flags: '--max-depth <n>', description: 'Maximum recursion depth for --workspace', config: { default: 6 } },
        { flags: '--include <glob>', description: 'Only migrate files that match this glob (repeatable)' },
        { flags: '--exclude <glob>', description: 'Skip files that match this glob (repeatable)' },
        { flags: '--report-file <file>', description: 'Write migration report JSON to a file' },
        { flags: '--backup-dir <dir>', description: 'Write pre-migration backups into this directory' },
        { flags: '--check', description: 'Exit with an error when migration changes are required' },
        { flags: '--json', description: 'Print the migration report as JSON' },
        { flags: '--dry-run', description: 'Preview changes without writing files' },
      ],
    },
    restore: {
      description: 'Restore config files from a previous migration report backup snapshot',
      optionDefs: [
        createCwdOptionDefinition(),
        { flags: '--report-file <file>', description: 'Migration report file generated by migrate' },
        { flags: '--dry-run', description: 'Preview restore targets without writing files' },
        { flags: '--strict', description: 'Fail when any backup file is missing' },
        { flags: '--json', description: 'Print the restore result as JSON' },
      ],
    },
    validate: {
      description: 'Validate migration report compatibility without modifying files',
      optionDefs: [
        createCwdOptionDefinition(),
        { flags: '--report-file <file>', description: 'Migration report file to validate' },
        { flags: '--strict', description: 'Fail when any backup file is missing' },
        { flags: '--json', description: 'Print validation result as JSON' },
      ],
    },
    status: {
      description: 'Check which Tailwind patches are applied',
      optionDefs: [
        createCwdOptionDefinition(),
        { flags: '--json', description: 'Print a JSON report of patch status' },
      ],
    },
  }
}