go-get-pseudo-version.sh

#!/bin/bash

# Function to print usage
print_usage() {
    echo "Usage: $0 <github-repo> [branch]"
    echo "Example: $0 go-gorm/gorm main"
    echo "If branch is not specified, 'master' will be used as default."
}

# Check if at least a repository is provided
if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
    print_usage
    exit 1
fi

REPO=$1
BRANCH=${2:-master}  # Use the second argument if provided, otherwise default to 'master'

# Fetch the latest commit information
RESPONSE=$(curl -s -w "%{http_code}" "https://api.github.com/repos/$REPO/commits/$BRANCH")
HTTP_STATUS="${RESPONSE: -3}"
BODY="${RESPONSE:0:${#RESPONSE}-3}"

# Check if the request was successful
if [[ ! "$HTTP_STATUS" =~ ^2 ]]; then
    echo "Error: HTTP status $HTTP_STATUS"
    echo "$BODY"
    exit 1
fi

# Extract the commit hash and date
COMMIT_HASH=$(echo "$BODY" | jq -r .sha | cut -c1-12)
COMMIT_DATE=$(echo "$BODY" | jq -r '.commit.committer.date')

# Convert the date to the required format
FORMATTED_DATE=$(date -u -d "$COMMIT_DATE" +"%Y%m%d%H%M%S")

# Construct the pseudo-version
PSEUDO_VERSION="v0.0.0-${FORMATTED_DATE}-${COMMIT_HASH}"

echo $PSEUDO_VERSION