#!/bin/sh
set -e

# envv installer
# curl -fsSL https://getenvv.com/envv | sh

# Default to ~/.local/bin (no sudo required, follows XDG spec)
INSTALL_DIR="${INSTALL_DIR:-$HOME/.local/bin}"
BASE_URL="https://envv-releases.s3.us-west-1.amazonaws.com"

main() {
    OS=$(uname -s | tr '[:upper:]' '[:lower:]')
    ARCH=$(uname -m)

    case "$ARCH" in
        x86_64) ARCH="amd64" ;;
        aarch64|arm64) ARCH="arm64" ;;
        *) err "Unsupported architecture: $ARCH" ;;
    esac

    case "$OS" in
        darwin) SHELL_CONFIG="$HOME/.zshrc" ;;
        linux) SHELL_CONFIG="$HOME/.bashrc" ;;
        mingw*|msys*|cygwin*)
            echo "For Windows, use PowerShell:"
            echo "  irm https://getenvv.com/install.ps1 | iex"
            exit 1
            ;;
        *) err "Unsupported OS: $OS" ;;
    esac

    URL="$BASE_URL/envv-$OS-$ARCH.tar.gz"

    echo "Installing envv for $OS/$ARCH..."

    # Create install directory if needed
    mkdir -p "$INSTALL_DIR"

    # Download to temp
    TMP=$(mktemp -d)
    trap "rm -rf $TMP" EXIT

    curl -fsSL "$URL" -o "$TMP/envv.tar.gz" || err "Download failed"
    tar -xzf "$TMP/envv.tar.gz" -C "$TMP" || err "Extract failed"

    # Install (no sudo needed for ~/.local/bin)
    mv "$TMP/envv" "$INSTALL_DIR/"
    chmod +x "$INSTALL_DIR/envv"

    echo ""
    echo "Installed to $INSTALL_DIR/envv"

    # Check if PATH already includes install dir
    case ":$PATH:" in
        *":$INSTALL_DIR:"*) PATH_OK=1 ;;
        *) PATH_OK=0 ;;
    esac

    if [ "$PATH_OK" = "0" ]; then
        echo ""
        echo "Add envv to your PATH by running:"
        echo ""
        echo "  echo 'export PATH=\"\$HOME/.local/bin:\$PATH\"' >> $SHELL_CONFIG"
        echo "  source $SHELL_CONFIG"
    fi

    echo ""
    echo "Get started:"
    echo "  envv auth register"
}

err() {
    echo "Error: $1" >&2
    exit 1
}

main