name: 'Notify Email'
description: 'Send Gitea Actions run result via SMTP (163/126 compatible)'
author: 'gitea_admin'

inputs:
  smtp_host:
    description: 'SMTP host (e.g. smtp.126.com)'
    required: true
  smtp_port:
    description: 'SMTP SSL port'
    required: false
    default: '465'
  smtp_user:
    description: 'SMTP user (full email address)'
    required: true
  smtp_pass:
    description: 'SMTP authorization code'
    required: true
  from:
    description: 'From address'
    required: false
    default: ${{ inputs.smtp_user }}
  to:
    description: 'Recipient(s), comma separated'
    required: true
  subject:
    description: 'Email subject'
    required: true
  body:
    description: 'Email body (plain text)'
    required: true

runs:
  using: 'composite'
  steps:
    - name: Send email via SMTP
      shell: bash
      env:
        SMTP_HOST: ${{ inputs.smtp_host }}
        SMTP_PORT: ${{ inputs.smtp_port }}
        SMTP_USER: ${{ inputs.smtp_user }}
        SMTP_PASS: ${{ inputs.smtp_pass }}
        FROM_ADDR: ${{ inputs.from }}
        TO_ADDR: ${{ inputs.to }}
        SUBJECT: ${{ inputs.subject }}
        BODY: ${{ inputs.body }}
      run: |
        set -u
        # 构造 --mail-rcpt 参数（每个收件人一个）
        RCPT_ARGS=""
        IFS=','
        for addr in $TO_ADDR; do
          RCPT_ARGS="$RCPT_ARGS --mail-rcpt $(printf '%s' "$addr" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
        done
        unset IFS
        # shellcheck disable=SC2086
        if ! printf '%s' "$BODY" | curl -fsS --ssl \
            --url "smtps://${SMTP_HOST}:${SMTP_PORT}" \
            --user "${SMTP_USER}:${SMTP_PASS}" \
            --mail-from "${FROM_ADDR}" \
            $RCPT_ARGS \
            -H "Subject: ${SUBJECT}" \
            -H "From: ${FROM_ADDR}" \
            -H "To: ${TO_ADDR}" \
            -H "Content-Type: text/plain; charset=UTF-8" \
            --max-time 15 --retry 2 \
            --upload-file -; then
          echo "::warning::Email send failed (non-fatal)"
        fi