scripts/install.sh at main · ddaaggeett/scripts · GitHub

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#!/usr/bin/env bash

set -euo pipefail

# ============================================================
# Walkum Global Scripts Installer
#
# Finds every .js, .py, and .sh file under src/
# and makes it globally executable through bin/.
#
# Example:
#
#   src/av/record_audio.js
#       ↓
#   bin/record_audio
#
# ============================================================

REPO_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
SRC_DIR="$REPO_DIR/src"
BIN_DIR="$REPO_DIR/bin"

PATH_LINE='export PATH="$HOME/github/scripts/bin:$PATH"'

echo "Walkum Global Scripts"
echo "====================="
echo
echo "Repository: $REPO_DIR"
echo "Source:     $SRC_DIR"
echo "Bin:        $BIN_DIR"
echo

# ------------------------------------------------------------
# Verify source directory
# ------------------------------------------------------------

if [[ ! -d "$SRC_DIR" ]]; then
    echo "ERROR: Source directory does not exist:"
    echo "  $SRC_DIR"
    exit 1
fi

mkdir -p "$BIN_DIR"

# ------------------------------------------------------------
# Add bin to PATH
# ------------------------------------------------------------

if ! grep -Fqx "$PATH_LINE" "$HOME/.bashrc" 2>/dev/null; then
    {
        echo
        echo "# Walkum global scripts"
        echo "$PATH_LINE"
    } >> "$HOME/.bashrc"

    echo "Added ~/github/scripts/bin to ~/.bashrc"
fi

# Make available immediately.
case ":$PATH:" in
    *":$BIN_DIR:"*)
        ;;
    *)
        export PATH="$BIN_DIR:$PATH"
        ;;
esac

# ------------------------------------------------------------
# Remove broken symlinks
# ------------------------------------------------------------

find "$BIN_DIR" \
    -maxdepth 1 \
    -type l \
    ! -exec test -e {} \; \
    -delete

installed=0

# ------------------------------------------------------------
# Find ONLY .js, .py, and .sh files
# ------------------------------------------------------------

while IFS= read -r -d '' script; do

    filename="$(basename "$script")"
    command="${filename%.*}"
    destination="$BIN_DIR/$command"

    # --------------------------------------------------------
    # Automatically make executable
    # --------------------------------------------------------

    chmod +x "$script"

    echo "EXEC  $script"

    # --------------------------------------------------------
    # Validate command name
    # --------------------------------------------------------

    if [[ ! "$command" =~ ^[a-zA-Z0-9._-]+$ ]]; then
        echo "SKIP  Invalid command name: $command"
        echo
        continue
    fi

    # --------------------------------------------------------
    # Don't overwrite a real file
    # --------------------------------------------------------

    if [[ -e "$destination" && ! -L "$destination" ]]; then
        echo
        echo "ERROR:"
        echo "  $destination already exists and is not a symlink."
        echo
        exit 1
    fi

    # --------------------------------------------------------
    # Existing symlink
    # --------------------------------------------------------

    if [[ -L "$destination" ]]; then

        existing="$(readlink -f "$destination" || true)"
        current="$(readlink -f "$script")"

        if [[ "$existing" == "$current" ]]; then
            echo "OK    $command"
            echo
            ((installed+=1))
            continue
        fi

        echo
        echo "ERROR: Command collision:"
        echo
        echo "  Command: $command"
        echo
        echo "Existing:"
        echo "  $existing"
        echo
        echo "New:"
        echo "  $current"
        echo

        exit 1
    fi

    # --------------------------------------------------------
    # Create symlink
    # --------------------------------------------------------

    ln -s "$script" "$destination"

    echo "LINK  $command"
    echo "      -> $script"
    echo

    ((installed+=1))

done < <(
    find "$SRC_DIR" \
        -type f \
        \( \
            -name '*.js' \
            -o -name '*.py' \
            -o -name '*.sh' \
        \) \
        -print0
)

# ------------------------------------------------------------
# Summary
# ------------------------------------------------------------

echo "====================="
echo "Installation complete"
echo "====================="
echo
echo "Installed: $installed"
echo
echo "Run:"
echo
echo "  source ~/.bashrc"
echo
echo "Done."