AI git commit filler

gitai.sh

#!/bin/env bash

set -e

model="gpt-4o";
temperature=0.8;

prompt="Below is the output of \`git diff HEAD\`."`
    `"\nPlease provide a perfect git commit message."`
    `"\nAlways use an emoji as the first character. Use emojis in the message text when appropriate."`
    `"\nUse past tense in the message title."`
    `"\nIt would be nice to list the modified files in the commit message."

# checking whether the argument was passed to the script
if ! [[ $# -eq 0 ]]; then
    prompt="${prompt}\n\nUse the following hint to generate the commit message: \`$1\`."`
    `"\nThe commit message language is strictly English."
fi

prompt="${prompt}\n\n(# If there is an error in the code, please report it in the comments to the commit)."

git add . --all
message=$(git diff HEAD)

if [ -z "$message" ]; then
    echo "Nothing to commit, working tree clean" >&2
    exit 1
fi

json_payload=$(jq -n \
    --arg model "$model" \
    --arg temperature "$temperature" \
    --arg prompt "$prompt" \
    --arg message "$message" \
    '{
        model: $model,
        temperature: ($temperature | tonumber),
        messages: [
          {
            role: "system",
            content: $prompt
          },
          {
            role: "user",
            content: $message
          }
        ]
    }')

response=$(curl -s https://api.openai.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -d "$json_payload")

# Checking if the "error" key is in the response
if echo "$response" | jq -e '.error' > /dev/null; then
    echo "Error: $(echo "$response" | jq -r '.error.message')" >&2
    exit 2
else
    # If there is no error, trying to extract the desired message
    content=$(echo "$response" | jq -e -r '.choices[0].message.content')
    
    # Checking if the message was extracted
    if ! [[ $? -eq 0 ]]; then
        # If the message could not be extracted, 
        # output the original text of the response to stderr
        echo "Failed to extract the message. Response was:" >&2
        echo "$response" >&2
        exit 3
    fi
fi

description_file=$(mktemp)
echo "$content" > "$description_file"
nano "$description_file"
cat "$description_file"
cat "$description_file" | sed '/^#/d' > "${description_file}.tmp"
mv "${description_file}.tmp" "$description_file"
git commit -a --file "$description_file"
rm "$description_file"