Cinarra Cloud Toolkit — S3 File Sharer

This script prepares the JSON payload, calls the presign API using your id_token, and then uploads the file to S3 with the returned presigned URL.

prep_upload() {
    if [[ -z "$1" || -z "$2" ]]; then
        echo "Usage: prep_upload <file> <id_token> [--send]"
        return 1
    fi

    FILE="$1"
    IDTOKEN="$2"

    if [[ ! -f "$FILE" ]]; then
        echo "Error: file '$FILE' not found"
        return 1
    fi

    # Filename
    FILENAME=$(basename "$FILE")

    # Filesize (Linux vs macOS/BSD)
    if stat --version >/dev/null 2>&1; then
        # GNU stat (Linux)
        FILESIZE=$(stat -c%s "$FILE")
    else
        # BSD stat (macOS, *BSD)
        FILESIZE=$(stat -f%z "$FILE")
    fi

    # MIME type
    FILETYPE=$(file --mime-type -b "$FILE")

    # MD5 → base64 (Linux: md5sum, macOS: md5)
    if command -v md5sum >/dev/null 2>&1; then
        MD5_BASE64=$(md5sum "$FILE" | awk '{print $1}' | xxd -r -p | base64)
    else
        MD5_HEX=$(md5 -q "$FILE")
        MD5_BASE64=$(printf '%s' "$MD5_HEX" | xxd -r -p | base64)
    fi

    if [[ -z "$FILESIZE" ]]; then
        echo "Error: could not determine file size"
        return 1
    fi

    # JSON payload sent to your presign API
    PAYLOAD=$(jq -n \
        --arg fn "$FILENAME" \
        --arg fs "$FILESIZE" \
        --arg ft "$FILETYPE" \
        --arg md "$MD5_BASE64" \
        '{
            filename: $fn,
            filesize: ($fs | tonumber),
            filetype: $ft,
            filemd5: $md,
            clientnetwork: "ethernet"
        }'
    )

    echo "------- Generated Payload -------"
    echo "$PAYLOAD"
    echo "--------------------------------"

    # Only call API + upload if third arg is --send
    if [[ "$3" == "--send" ]]; then
        echo "Requesting presigned URL..."
        RESPONSE=$(curl -s -X PUT "https://wvxbu19skj.execute-api.ap-northeast-1.amazonaws.com/default/cnr-presigned-url-s3" \
            -H "Content-Type: application/json" \
            -H "id_token: $IDTOKEN" \
            --data-raw "$PAYLOAD")

        echo "------- Presign Response -------"
        echo "$RESPONSE"
        echo "--------------------------------"

        # Adjust .url below if your field name is different
        UPLOAD_URL=$(echo "$RESPONSE" | jq -r '.url // .uploadUrl // .upload_url // .presignedUrl // .presigned_url // empty')

        if [[ -z "$UPLOAD_URL" || "$UPLOAD_URL" == "null" ]]; then
            echo "Error: could not find presigned URL in response. Adjust jq selector."
            return 1
        fi

        echo "Uploading file to S3..."
        echo "PUT $UPLOAD_URL"

        curl -X PUT "$UPLOAD_URL" \
            -H "Content-MD5: $MD5_BASE64" \
            -H "Content-Type: $FILETYPE" \
            --upload-file "$FILE"
    fi
}