LLM Fish shell automation

work.fish

function work -d "Unified worktree and terminal session manager"
    if test (count $argv) -eq 0
        echo "Usage: work <command> [args]"
        echo "Commands:"
        echo "  start <branch>  - Create worktree, copy .env files, and start tmux session"
        echo "  term            - Start tmux dev session named after current git branch"
        echo "  finish <branch> - Complete worktree: cleanup .env files, remove worktree, and delete branch"
        return 1
    end

    switch $argv[1]
        case "start"
            if test (count $argv) -ne 2
                echo "Usage: work start <branch_name>"
                return 1
            end

            if not git rev-parse --is-inside-work-tree >/dev/null 2>&1
                echo "Not in a git repository"
                return 1
            end

            set branch_name $argv[2]
            set worktree_path "worktrees/$branch_name"

            # Check if worktree already exists
            if test -d "$worktree_path"
                echo "Worktree $worktree_path already exists"
                return 1
            end

            # Create worktree (this will create the branch automatically if it doesn't exist)
            echo "Creating worktree: $worktree_path"
            if git show-ref --verify --quiet "refs/heads/$branch_name"
                echo "Branch $branch_name already exists, using existing branch"
                git worktree add "$worktree_path" "$branch_name"
            else
                echo "Creating new branch: $branch_name"
                git worktree add -b "$branch_name" "$worktree_path"
            end

            # Copy .env files from root to worktree
            if test -f ".env"
                echo "Copying .env file to worktree..."
                cp ".env" "$worktree_path/.env"
            end

            if test -f "fastlane/.env"
                echo "Copying fastlane/.env file to worktree..."
                mkdir -p "$worktree_path/fastlane"
                cp "fastlane/.env" "$worktree_path/fastlane/.env"
            end

            # Change to worktree directory and start tmux
            echo "Changing to worktree directory and starting development session..."
            cd "$worktree_path"
            work term

        case "term"
            set current_branch (git branch --show-current 2>/dev/null)
            if test -z "$current_branch"
                echo "Not in a git repository"
                return 1
            end

            # Slugify pwd: replace / with -, remove leading -, remove dots, lowercase
            set pwd_slug (string replace -a '/' '-' (pwd) | string replace -a '.' '' | string trim -c '-' | string lower)

            # Slugify branch name: replace / with -, lowercase
            set branch_slug (string replace -a '/' '-' $current_branch | string lower)

            # Create session name: pwd-slug_branch-slug
            set session_name "$pwd_slug"_"$branch_slug"

            # Create or attach to tmux session
            if tmux has-session -t "$session_name" 2>/dev/null
                tmux attach-session -t "$session_name"
            else
                tmuxinator start dev -n "$session_name"
            end

        case "finish"
            if test (count $argv) -ne 2
                echo "Usage: work finish <branch_name>"
                return 1
            end

            if not git rev-parse --is-inside-work-tree >/dev/null 2>&1
                echo "Not in a git repository"
                return 1

        case "*"
            echo "Unknown command: $argv[1]"
            echo "Available commands: start, term, finish"
            return 1
    end
end