import { Command } from 'commander'
import ora from 'ora'
import { findPackages } from '../utils/package-json.js'
import { getCIStatus, formatDate, type CIStatus } from '../utils/forgejo.js'
import { colors, printTable, logInfo, logWarning, logError } from '../utils/output.js'

export function createCICommand(): Command {
  return new Command('ci')
    .description('Check Forgejo Actions CI status')
    .argument('[package]', 'Specific package to check (optional)')
    .option('-a, --all', 'Check all packages in workspace')
    .option('-f, --failed', 'Show only failed packages')
    .option('-v, --verbose', 'Show detailed failure information')
    .option('--path <path>', 'Path to workspace (default: current directory)')
    .action(async (packageName: string | undefined, options: {
      all?: boolean
      failed?: boolean
      verbose?: boolean
      path?: string
    }) => {
      const basePath = options.path || process.cwd()

      // Check for FORGEJO_TOKEN
      if (!process.env.FORGEJO_TOKEN) {
        logError('FORGEJO_TOKEN environment variable not set')
        console.log()
        console.log('Set it with:')
        console.log(colors.dim('  export FORGEJO_TOKEN="your-token-here"'))
        process.exit(1)
      }

      const spinner = ora('Checking CI status...').start()

      try {
        let packagesToCheck: string[] = []

        if (packageName) {
          packagesToCheck = [packageName]
        } else if (options.all) {
          const packages = await findPackages(basePath)
          packagesToCheck = packages
            .filter(p => p.shouldPublish)
            .map(p => p.name)
        } else {
          // Check current directory's package
          const packages = await findPackages(basePath)
          const currentPkg = packages.find(p => p.path === basePath)
          if (currentPkg) {
            packagesToCheck = [currentPkg.name]
          } else {
            spinner.stop()
            logWarning('No package found in current directory. Use --all to check all packages.')
            return
          }
        }

        if (packagesToCheck.length === 0) {
          spinner.stop()
          logWarning('No packages to check')
          return
        }

        spinner.text = `Checking ${packagesToCheck.length} package(s)...`

        const statuses: CIStatus[] = []
        for (const pkg of packagesToCheck) {
          const status = await getCIStatus(pkg)
          statuses.push(status)
        }

        spinner.stop()

        // Filter if --failed flag is set
        const displayStatuses = options.failed
          ? statuses.filter(s => s.status === 'failure')
          : statuses

        if (displayStatuses.length === 0 && options.failed) {
          console.log()
          console.log(colors.success('✓ No failing packages'))
          return
        }

        console.log()
        logInfo(`CI status for ${displayStatuses.length} package(s)${options.failed ? ' (failures only)' : ''}`)
        console.log()

        const headers = ['Package', 'Status', 'Branch', 'Last Run']
        const rows = displayStatuses.map(s => [
          s.repo,
          formatStatus(s.status),
          s.lastRun?.head_branch || colors.dim('-'),
          s.lastRun ? formatDate(s.lastRun.updated_at) : colors.dim('never'),
        ])

        printTable(headers, rows)
        console.log()

        // Show verbose failure details
        if (options.verbose) {
          const failures = displayStatuses.filter(s => s.status === 'failure')
          if (failures.length > 0) {
            console.log(colors.error('Failure Details:'))
            console.log()
            for (const fail of failures) {
              console.log(colors.error(`✗ ${fail.repo}`))
              if (fail.lastRun) {
                const url = `http://forge.black.local/lilith/${fail.repo}/actions`
                console.log(`  ${colors.dim(url)}`)
              }
              console.log()
            }
          }
        }

        // Summary
        const success = statuses.filter(s => s.status === 'success').length
        const failure = statuses.filter(s => s.status === 'failure').length
        const pending = statuses.filter(s => s.status === 'pending').length
        const noRuns = statuses.filter(s => s.status === 'no-runs').length

        if (failure > 0) {
          logError(`${failure} package(s) have failing CI`)
        }
        if (pending > 0) {
          logWarning(`${pending} package(s) have pending CI`)
        }
        if (success > 0) {
          console.log(colors.success(`${success} package(s) have passing CI`))
        }
        if (noRuns > 0) {
          console.log(colors.dim(`${noRuns} package(s) have no CI runs`))
        }
      } catch (error) {
        spinner.fail('Failed to check CI status')
        console.error(error instanceof Error ? error.message : error)
        process.exit(1)
      }
    })
}

function formatStatus(status: CIStatus['status']): string {
  switch (status) {
    case 'success':
      return colors.success('✓ passing')
    case 'failure':
      return colors.error('✗ failing')
    case 'pending':
      return colors.warning('● pending')
    case 'no-runs':
      return colors.dim('○ no runs')
    case 'error':
      return colors.error('? error')
  }
}