#!/bin/bash
# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.

### Client script to submit a claim to the SCITT ledger and verify the receipt 

set -euo pipefail

# Variables
: "${COSE_CLAIMS_PATH:?"variable not set. Please define the path to the COSE claim to register into the ledger"}"
: "${OUTPUT_FOLDER:?"variable not set. Please define the output folder to use to store script artifacts"}"

SCITT_URL=${SCITT_URL:-"https://127.0.0.1:8000"}

# Create output folder
mkdir -p "$OUTPUT_FOLDER"

echo -e "\nSetting up environment"
if [ ! -f "venv/bin/activate" ]; then
    python3.12 -m venv "venv"
fi

# Activate environment and install pyscitt local library
source venv/bin/activate
pip install --disable-pip-version-check -q -e ./pyscitt

# Get service parameters
echo -e "\nGetting service keys"
SERVICE_PARAMS_FOLDER="$OUTPUT_FOLDER"/service_params
mkdir -p "$SERVICE_PARAMS_FOLDER"

# Get service keys from /.well-known/scitt-keys endpoint (COSE_Key_Set in CBOR format)
curl -k -f "$SCITT_URL"/.well-known/scitt-keys -o "$SERVICE_PARAMS_FOLDER"/scitt-keys.cbor

echo -e "\nSubmitting claim to the ledger and getting receipt for the committed transaction"
RECEIPT_FOLDER="$OUTPUT_FOLDER"/receipts
mkdir -p "$RECEIPT_FOLDER"
RECEIPT_PATH="$RECEIPT_FOLDER"/embedded.receipt.cose

# Submit signed claim
scitt submit "$COSE_CLAIMS_PATH" \
    --transparent-statement "$RECEIPT_PATH" \
    --url "$SCITT_URL" \
    --development

# Preview receipt
echo -e "\nViewing embedded receipt content"
scitt pretty-receipt "$RECEIPT_PATH"

# Verify receipt
echo -e "\nVerifying receipt"
scitt validate "$RECEIPT_PATH" \
    --service-trust-store "$SERVICE_PARAMS_FOLDER"

echo -e "\nScript completed successfully"