gitoops.sh

#!/bin/bash

# Git Oops Toolkit - Fix common git mistakes
# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Check if in a git repo
check_git_repo() {
    if ! git rev-parse --git-dir > /dev/null 2>&1; then
        echo -e "${RED}Error: Not in a git repository!${NC}"
        exit 1
    fi
}

# Function 1: Undo last commit (keep changes)
git_oops() {
    echo -e "${YELLOW}=== Undo Last Commit ===${NC}"
    echo "This will undo your last commit but keep all changes staged."
    echo ""
    echo -e "${BLUE}Current commit:${NC}"
    git log -1 --oneline
    echo ""

    read -p "Undo this commit? (y/n): " -n 1 -r
    echo
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        git reset --soft HEAD~1
        echo -e "${GREEN}✓ Commit undone! Your changes are still staged.${NC}"
    else
        echo "Cancelled."
    fi
}

# Function 2: Unstage a specific file
git_oops_file() {
    echo -e "${YELLOW}=== Unstage File ===${NC}"
    echo ""
    echo -e "${BLUE}Currently staged files:${NC}"
    git diff --cached --name-only
    echo ""

    read -p "Enter filename to unstage: " filename
    if [ -z "$filename" ]; then
        echo "No filename provided. Cancelled."
        return
    fi

    git reset HEAD "$filename" 2>/dev/null
    if [ $? -eq 0 ]; then
        echo -e "${GREEN}✓ Unstaged: $filename${NC}"
    else
        echo -e "${RED}Error: Could not unstage $filename${NC}"
    fi
}

# Function 3: Hard reset (nuclear option)
git_nuke() {
    echo -e "${RED}=== NUCLEAR OPTION: Hard Reset ===${NC}"
    echo -e "${RED}⚠️  WARNING: This will DELETE all uncommitted changes!${NC}"
    echo ""
    echo -e "${BLUE}Current status:${NC}"
    git status --short
    echo ""

    read -p "Type 'NUKE' to confirm (or anything else to cancel): " confirm
    if [ "$confirm" = "NUKE" ]; then
        git reset --hard HEAD
        git clean -fd
        echo -e "${GREEN}✓ Repository reset to last commit. All changes deleted.${NC}"
    else
        echo "Cancelled. (Phew!)"
    fi
}

# Function 4: Undo multiple commits
git_whoops() {
    echo -e "${YELLOW}=== Undo Multiple Commits ===${NC}"
    echo ""
    echo -e "${BLUE}Recent commits:${NC}"
    git log --oneline -10
    echo ""

    read -p "How many commits to undo? " num
    if ! [[ "$num" =~ ^[0-9]+$ ]]; then
        echo "Invalid number. Cancelled."
        return
    fi

    if [ "$num" -lt 1 ]; then
        echo "Must be at least 1. Cancelled."
        return
    fi

    echo ""
    echo -e "${YELLOW}This will undo the last $num commit(s) but keep changes.${NC}"
    read -p "Continue? (y/n): " -n 1 -r
    echo
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        git reset --soft HEAD~$num
        echo -e "${GREEN}✓ Undone $num commit(s)! Changes are still staged.${NC}"
    else
        echo "Cancelled."
    fi
}

# Function 5: Remove large file from last commit
git_remove_file() {
    echo -e "${YELLOW}=== Remove File from Last Commit ===${NC}"
    echo ""
    echo -e "${BLUE}Files in last commit:${NC}"
    git diff-tree --no-commit-id --name-only -r HEAD
    echo ""

    read -p "Enter filename to remove: " filename
    if [ -z "$filename" ]; then
        echo "No filename provided. Cancelled."
        return
    fi

    git rm --cached "$filename" 2>/dev/null
    if [ $? -eq 0 ]; then
        git commit --amend --no-edit
        echo -e "${GREEN}✓ Removed $filename from last commit${NC}"
        echo -e "${BLUE}Don't forget to add it to .gitignore if needed!${NC}"
    else
        echo -e "${RED}Error: Could not remove $filename${NC}"
    fi
}

# Main menu
show_menu() {
    clear
    echo -e "${BLUE}╔════════════════════════════════════╗${NC}"
    echo -e "${BLUE}║     Git Oops Toolkit 🛠️            ║${NC}"
    echo -e "${BLUE}╚════════════════════════════════════╝${NC}"
    echo ""
    echo "1) Undo last commit (keep changes)"
    echo "2) Unstage a file"
    echo "3) Remove file from last commit"
    echo "4) Undo multiple commits"
    echo "5) 💣 NUKE - Hard reset (delete all changes)"
    echo "6) Exit"
    echo ""
}

# Main loop
main() {
    check_git_repo

    while true; do
        show_menu
        read -p "Choose an option (1-6): " choice
        echo ""

        case $choice in
            1) git_oops ;;
            2) git_oops_file ;;
            3) git_remove_file ;;
            4) git_whoops ;;
            5) git_nuke ;;
            6) echo "Goodbye!"; exit 0 ;;
            *) echo -e "${RED}Invalid option${NC}" ;;
        esac

        echo ""
        read -p "Press Enter to continue..."
    done
}

# Run the app
main