#!/bin/bash
# test_migration_email.sh - Stellt eine Test-EMail in S3 + SQS ein
#
# Simuliert den kompletten SES-Eingang: Mail landet in S3, Metadaten in SQS.
# Der Worker holt sie dann ab und verarbeitet sie (Delivery oder Forward).
#
# Verwendung:
#   ./test_migration_email.sh cielectrical.com carlosr@cielectrical.com
#   ./test_migration_email.sh buddelectric.net service@buddelectric.net
#
# Optionale Absenderadresse:
#   ./test_migration_email.sh cielectrical.com carlosr@cielectrical.com test@example.com

set -e

# --- Parameter ---
DOMAIN="$1"
RECIPIENT="$2"
FROM_ADDR="${3:-migration-test@andreasknuth.de}"
AWS_REGION=${AWS_REGION:-"us-east-2"}

if [ -z "$DOMAIN" ] || [ -z "$RECIPIENT" ]; then
    echo "Verwendung: $0 <domain> <recipient> [from-address]"
    echo "Beispiel:   $0 cielectrical.com carlosr@cielectrical.com"
    exit 1
fi

# --- Abgeleitete Variablen ---
BUCKET_NAME=$(echo "$DOMAIN" | tr '.' '-')"-emails"
QUEUE_NAME=$(echo "$DOMAIN" | tr '.' '-')"-queue"
MESSAGE_ID="test-migration-$(date +%s)-$$"
TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
DATE_RFC2822=$(date -R)

echo "============================================================"
echo "  📧 Test-Mail für Migration"
echo "============================================================"
echo "  Domain:    $DOMAIN"
echo "  Empfänger: $RECIPIENT"
echo "  Absender:  $FROM_ADDR"
echo "  Bucket:    $BUCKET_NAME"
echo "  Queue:     $QUEUE_NAME"
echo "  Key:       $MESSAGE_ID"
echo ""

# --- Schritt 1: E-Mail als RFC822 erstellen ---
echo "[1/3] Erstelle Test-Email..."

MAIL_CONTENT="From: Migration Test <${FROM_ADDR}>
To: ${RECIPIENT}
Subject: Migration Test $(date '+%Y-%m-%d %H:%M:%S')
Date: ${DATE_RFC2822}
Message-ID: <${MESSAGE_ID}@test.email-srvr.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8

Hallo!

Dies ist eine Test-EMail zur Validierung der E-Mail-Migration.

Gesendet:  $(date)
Domain:    ${DOMAIN}
Empfaenger: ${RECIPIENT}
Message-ID: ${MESSAGE_ID}

Wenn du diese Mail in deiner Inbox siehst, funktioniert der
komplette Pfad: S3 -> SQS -> Worker -> Forward/Delivery.

-- 
Bay Area Affiliates Migration Test"

TMP_FILE=$(mktemp /tmp/test-mail-XXXXXX.eml)
echo "$MAIL_CONTENT" > "$TMP_FILE"

echo "  ✓ Mail erstellt ($(wc -c < "$TMP_FILE") Bytes)"

# --- Schritt 2: In S3 Bucket ablegen ---
echo "[2/3] Lade Mail in S3 hoch: s3://${BUCKET_NAME}/${MESSAGE_ID} ..."

aws s3 cp "$TMP_FILE" "s3://${BUCKET_NAME}/${MESSAGE_ID}" \
    --region "$AWS_REGION" \
    --quiet

echo "  ✓ S3 Upload erfolgreich"

# --- Schritt 3: SQS Message im Fake-SNS-Format einstellen ---
echo "[3/3] Stelle Message in SQS Queue..."

QUEUE_URL=$(aws sqs get-queue-url \
    --queue-name "$QUEUE_NAME" \
    --region "$AWS_REGION" \
    --output text \
    --query 'QueueUrl')

if [ -z "$QUEUE_URL" ]; then
    echo "  ❌ Queue $QUEUE_NAME nicht gefunden!"
    rm -f "$TMP_FILE"
    exit 1
fi

# SES Event Payload (das was die Lambda normalerweise erzeugt)
SES_DATA=$(jq -n \
    --arg msgId "$MESSAGE_ID" \
    --arg source "$FROM_ADDR" \
    --arg recipient "$RECIPIENT" \
    --arg ts "$TIMESTAMP" \
    '{
        mail: {
            messageId: $msgId,
            source: $source,
            timestamp: $ts,
            destination: [$recipient]
        },
        receipt: {
            recipients: [$recipient],
            timestamp: $ts,
            action: {
                type: "S3",
                bucketName: "test",
                objectKey: $msgId
            }
        }
    }')

# Fake SNS Wrapper (so wie deine Lambda es erzeugt)
SQS_BODY=$(jq -n \
    --arg sesData "$SES_DATA" \
    --arg ts "$TIMESTAMP" \
    '{
        Type: "Notification",
        MessageId: "test-\(now | tostring)",
        TopicArn: "arn:aws:sns:ses-shim:global-topic",
        Subject: "Amazon SES Email Receipt Notification",
        Message: $sesData,
        Timestamp: $ts
    }')

aws sqs send-message \
    --queue-url "$QUEUE_URL" \
    --region "$AWS_REGION" \
    --message-body "$SQS_BODY" \
    --output text \
    --query 'MessageId'

echo "  ✓ SQS Message eingestellt"

# --- Aufräumen ---
rm -f "$TMP_FILE"

echo ""
echo "============================================================"
echo "  ✅ Test-Mail eingestellt!"
echo "============================================================"
echo ""
echo "  Jetzt Worker-Logs beobachten:"
echo "    docker logs -f email-worker --tail 50"
echo ""
echo "  Der Worker sollte folgendes zeigen:"
echo "    📧 Processing: ${MESSAGE_ID:0:20}... -> ${RECIPIENT}"
echo "    ✓ Forwarded via legacy SMTP ... (falls Forward-Rule existiert)"
echo "    ODER"
echo "    ✓ Delivered to ${RECIPIENT} (falls DMS-Mailbox existiert)"
echo ""
echo "  S3 Objekt prüfen:"
echo "    aws s3 ls s3://${BUCKET_NAME}/${MESSAGE_ID} --region ${AWS_REGION}"
echo ""
echo "  Falls etwas schief geht - SQS Message manuell prüfen:"
echo "    aws sqs receive-message --queue-url ${QUEUE_URL} --region ${AWS_REGION}"
echo "============================================================"