#!/bin/sh
# POSIX-compliant install script for shmake

# Define installation paths
BIN_DIR="$HOME/.local/bin"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"

# Source files
SRC_SOURCE="$SCRIPT_DIR/source_code"
SRC_LICENSES="$SCRIPT_DIR/licenses"

# Destination names
DEST_SOURCE="$BIN_DIR/shmake_source"
DEST_SCRIPT="$DEST_SOURCE/shmake.sh"
DEST_SYMLINK="$BIN_DIR/shmake"
DEST_LICENSES="$BIN_DIR/licenses"

# 1. Verify source files exist in the current directory
if [ ! -d "$SRC_SOURCE" ]; then
        printf 'Error: source_code directory not found in %s\n' "$SCRIPT_DIR" >&2
        exit 1
fi

if [ ! -d "$SRC_LICENSES" ]; then
        printf 'Error: licenses directory not found in %s\n' "$SCRIPT_DIR" >&2
        exit 1
fi

# 2. Create destination directory
mkdir -p "$BIN_DIR"

# 3. Clean up old installation if it exists
if [ -e "$DEST_SOURCE" ]; then
        if [ -f "$DEST_SOURCE" ]; then
                printf 'Removing old shmake file...\n'
                rm -rf "$DEST_SOURCE"
        elif [ -d "$DEST_SOURCE" ]; then
                printf 'Removing old shmake directory...\n'
                rm -rf "$DEST_SOURCE"
        fi
fi

# 4. Also clean up old symlink if it exists
if [ -e "$DEST_SYMLINK" ] && [ "$DEST_SYMLINK" != "$DEST_SOURCE" ]; then
        printf 'Removing old shmake symlink...\n'
        rm -rf "$DEST_SYMLINK"
fi

# 5. Copy the entire source_code directory
cp -R "$SRC_SOURCE" "$DEST_SOURCE"

# 6. Ensure the main script is executable
chmod +x "$DEST_SCRIPT"

# 7. Create symlink from ~/.local/bin/shmake to ~/.local/bin/shmake/shmake.sh
# This allows you to run "shmake" command
rm -rf "$DEST_SYMLINK"
ln -s "$DEST_SCRIPT" "$DEST_SYMLINK"

# 8. Clean up old licenses directory if it exists
if [ -e "$DEST_LICENSES" ]; then
        if [ -f "$DEST_LICENSES" ]; then
                rm -f "$DEST_LICENSES"
        elif [ -d "$DEST_LICENSES" ]; then
                rm -rf "$DEST_LICENSES"
        fi
fi

# 9. Copy the licenses directory
cp -R "$SRC_LICENSES" "$BIN_DIR/"

# 10. Check if the binary directory is in the user's PATH
case ":$PATH:" in
        *":$BIN_DIR:"*)
                # PATH is already set
                ;;
        *)
                printf '\n'
                printf 'NOTE: %s is not in your PATH.\n' "$BIN_DIR"
                printf 'To use shmake from anywhere, add this to your shell profile:\n'
                printf '  export PATH="%s:$PATH"\n' "$BIN_DIR"
                printf '\n'
                ;;
esac

printf 'Installation complete!\n'
printf 'You can now run "shmake" in your terminal.\n'
printf 'Shmake files are installed at: %s\n' "$DEST_SOURCE"
printf 'Symlink created at: %s\n' "$DEST_SYMLINK"
printf 'Licenses are available at: %s\n' "$DEST_LICENSES"

exit 0