feat: read private key from env file (#672)

Co-authored-by: Santos Rosati <rosatisantos@gmail.com>
Co-authored-by: Tatu <65305492+srosati@users.noreply.github.com>

Author: NicolasRampoldi

batcher/aligned/generate_proof_and_send.sh

@@ -1,5 +1,13 @@
 #!/bin/bash
 
+# Get the directory of the script
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+# Load environment variables from .env file
+if [ -f "$SCRIPT_DIR/.env" ]; then
+    source "$SCRIPT_DIR/.env"
+fi
+
 if [ $# -lt 1 ]; then
     echo "Usage: $0 <x> <repetitions?>"
     exit 1
@@ -16,10 +24,27 @@ fi
 echo "Generating proof $x != 0"
 go run scripts/test_files/gnark_groth16_bn254_infinite_script/cmd/main.go $x
 
-./batcher/target/release/aligned submit \
-  --proving_system Groth16Bn254 \
-  --repetitions $repetitions \
-  --proof scripts/test_files/gnark_groth16_bn254_infinite_script/infinite_proofs/ineq_${x}_groth16.proof \
-  --public_input scripts/test_files/gnark_groth16_bn254_infinite_script/infinite_proofs/ineq_${x}_groth16.pub \
-  --vk scripts/test_files/gnark_groth16_bn254_infinite_script/infinite_proofs/ineq_${x}_groth16.vk \
-  --proof_generator_addr 0x66f9664f97F2b50F62D13eA064982f936dE76657
+# Set default values for RPC and BATCHER if they are not set
+RPC=${RPC:-http://localhost:8545}
+BATCHER=${BATCHER:-ws://localhost:8080}
+
+cmd=(
+    ./batcher/target/release/aligned
+    submit
+    --proving_system Groth16Bn254
+    --repetitions "$repetitions"
+    --proof "scripts/test_files/gnark_groth16_bn254_infinite_script/infinite_proofs/ineq_${x}_groth16.proof"
+    --public_input "scripts/test_files/gnark_groth16_bn254_infinite_script/infinite_proofs/ineq_${x}_groth16.pub"
+    --vk "scripts/test_files/gnark_groth16_bn254_infinite_script/infinite_proofs/ineq_${x}_groth16.vk"
+    --proof_generator_addr 0x66f9664f97F2b50F62D13eA064982f936dE76657
+    --rpc "$RPC"
+    --conn "$BATCHER"
+)
+
+# If PRIVATE_KEY is set then add private key argument
+if [ -n "$PRIVATE_KEY" ]; then
+    cmd+=(--private_key "$PRIVATE_KEY")
+fi
+
+# Execute the command
+"${cmd[@]}"