git-comsu

#!/bin/bash

# Define ANSI color codes
RED='\033[0;31m'
GRAY='\033[0;37m'
GREEN='\033[0;32m'
ICYAN='\033[0;96m'
YELLOW='\033[1;33m'
IYELLOW='\033[0;93m'
NC='\033[0m' # No Color

# Check if the API key environment variable is set
if [[ -z "$GOOGLE_AI_STUDIO_API_KEY" ]]; then
    echo -e "${YELLOW}Error: The GOOGLE_AI_STUDIO_API_KEY environment variable is not set.${NC}"
    exit 1
fi

# URL of the Google Generative AI API endpoint
API_URL="https://generativelanguage.googleapis.com/v1/models/gemini-2.5-flash:generateContent?key=$GOOGLE_AI_STUDIO_API_KEY"

# Function to get the staged changes from Git
get_staged_changes() {
    # Get the staged changes using git diff --cached
    changes=$(git diff --cached)

    # Clean up changes: remove newlines and escape double quotes
    clean_changes=$(echo "$changes" | sed ':a;N;$!ba;s/\n/ /g' | sed 's/"/\\"/g' | sed "s/'/\\'/g")

    echo "$clean_changes"
}

# Function to generate commit messages using Google Generative AI
generate_commit_messages() {
    local changes="$1"
    PROMPT_FILE="/usr/local/share/git-comsu/prompt"

    # Check if the prompt file exists
    if [[ ! -f "$PROMPT_FILE" ]]; then
        echo "Error: $PROMPT_FILE file not found!"
        exit 1
    fi

    # Load prompt from the file
    prompt_template=$(< "$PROMPT_FILE")

    # Combine the prompt with changes
    prompt="${prompt_template} Changes: $changes"

    # Prepare the JSON payload using the cleaned-up prompt
    json_payload=$(jq -n --arg text "$prompt" '{"contents":[{"parts":[{"text":$text}]}]}')

    # Make a request to the Google Generative AI API using curl
    response=$(curl -s \
      -H "Content-Type: application/json" \
      -d "$json_payload" \
      -X POST "$API_URL")

    # Extract and print the response text using jq
    suggested_messages=$(echo "$response" | jq -r '.candidates[0].content.parts[0].text' | sed "s/\"/'/g" | sed 's/`//g' | sed 's/- //g' )
    echo "$suggested_messages"
}

# Function to prompt the user for their choice and commit the changes
commit_message() {
    local messages=("$@")
    
    # Display the messages with numbered options
    for i in "${!messages[@]}"; do
        echo -e "${IYELLOW}$((i+1)). ${messages[i]}${NC}"
    done

    # Prompt the user for their choice
    echo
    read -p "Write the message number you want to use (write 'x' to exit): " choice
    echo

    # Check the user's choice
    if [[ "$choice" == "x" ]]; then
        echo -e "${RED}Exiting without committing.${NC}"
        exit 0
    elif [[ "$choice" -gt 0 && "$choice" -le "${#messages[@]}" ]]; then
        selected_message="${messages[$((choice-1))]}"
        # Capture the output of the git commit command
        commit_output=$(git commit -m "$selected_message" 2>&1)

        # Print the git output in the desired color
        echo -e "${GRAY}${commit_output}${NC}"
        echo
        echo -e "${GREEN}Committed successfully.${NC}"
    else
        echo -e "${RED}Invalid choice. Exiting without committing.${NC}"
        exit 0
    fi
}

# Main execution
main() {
    # Get the staged changes
    changes=$(get_staged_changes)

    # If there are no changes, exit the script
    if [ -z "$changes" ]; then
        echo -e "${YELLOW}No staged changes found.${NC}"
        echo -e "${YELLOW}You should first add at least one file to stage.${NC}"
        exit 1
    fi

    echo -e "${ICYAN}Generating the commit messages based on your changes ...${NC}"
    echo

    # Generate commit message suggestions
    messages=$(generate_commit_messages "$changes")

    # Convert multiline string of messages into an array
    IFS=$'\n' read -r -d '' -a messages_array <<< "$messages"

    # Ask the user to choose a message and commit it
    commit_message "${messages_array[@]}"
}

# Run the main function
main