compare_dependencies.sh

#!/bin/bash

# Path to your Hercules.properties file
PROPERTIES_FILE="Hercules.properties"

# Temporary files
SBT_OUTPUT="sbt_update_output.txt"
PROPERTIES_DEPS="properties_deps.txt"
SBT_DEPS="sbt_deps.txt"

# Function to extract and clean DEPENDENCIES from Hercules.properties
extract_properties_deps() {
    if [ ! -f "$PROPERTIES_FILE" ]; then
        echo "Error: $PROPERTIES_FILE not found!"
        exit 1
    fi

    # Extract DEPENDENCIES block, remove quotes, and clean URLs
    sed -n '/^DEPENDENCIES="/,/"/p' "$PROPERTIES_FILE" | \
    grep '^http' | \
    tr -d '\\' | \
    tr ',' '\n' | \
    grep -v '^$' | \
    sort > "$PROPERTIES_DEPS"
}

# Function to run sbt and extract dependency URLs
extract_sbt_deps() {
    echo "Running 'sbt show update' to fetch resolved dependencies..."
    sbt "show update" > "$SBT_OUTPUT" 2>/dev/null

    if [ ! -f "$SBT_OUTPUT" ]; then
        echo "Error: Failed to generate sbt output!"
        exit 1
    fi

    # Extract full URLs from sbt update output
    grep -oE 'Some\(https://[^)]+\.jar\)' "$SBT_OUTPUT" | \
    sed 's/Some(//;s/)$//' | \
    sort | \
    uniq > "$SBT_DEPS"
}

# Function to compare dependencies
compare_deps() {
    echo "Comparing dependencies from $PROPERTIES_FILE with sbt update..."

    # Missing in sbt (present in properties but not in sbt)
    echo -e "\nDependencies missing in sbt update (present in $PROPERTIES_FILE):"
    comm -23 "$PROPERTIES_DEPS" "$SBT_DEPS" | \
    while read -r line; do
        [ -n "$line" ] && echo "$line" || echo "None"
    done

    # Missing in properties (present in sbt but not in properties)
    echo -e "\nDependencies missing in $PROPERTIES_FILE (present in sbt update):"
    comm -13 "$PROPERTIES_DEPS" "$SBT_DEPS" | \
    while read -r line; do
        [ -n "$line" ] && echo "$line" || echo "None"
    done
}

# Function to clean up temporary files
cleanup() {
    rm -f "$PROPERTIES_DEPS" "$SBT_DEPS" "$SBT_OUTPUT"
}

# Main execution
main() {
    if ! command -v sbt >/dev/null 2>&1; then
        echo "Error: sbt is not installed or not in PATH!"
        exit 1
    fi

    extract_properties_deps
    extract_sbt_deps
    compare_deps
    cleanup
}

main