#!/bin/sh
set -eu

APP_NAME="kaino"
DOWNLOAD_BASE_URL="${KAINO_DOWNLOAD_BASE_URL:-https://github.com/Kainotomic/kaino-code-releases/releases/latest/download}"
TARGET_NAME="$APP_NAME"

OS=$(uname -s)
ARCH=$(uname -m)

case "$OS:$ARCH" in
  Darwin:arm64)
    ASSET_NAME="kaino-darwin-arm64"
    ;;
  Darwin:x86_64)
    ASSET_NAME="kaino-darwin-x64"
    ;;
  Linux:x86_64)
    ASSET_NAME="kaino-linux-x64"
    ;;
  Linux:aarch64|Linux:arm64)
    ASSET_NAME="kaino-linux-arm64"
    ;;
  MINGW*:x86_64|MSYS*:x86_64|CYGWIN*:x86_64)
    ASSET_NAME="kaino-windows-x64.exe"
    TARGET_NAME="kaino.exe"
    ;;
  *)
    echo "Unsupported platform: $OS $ARCH" >&2
    echo "On native Windows PowerShell, run: irm https://kcode.kaino.dev/install.ps1 | iex" >&2
    exit 1
    ;;
 esac

if [ -n "${KAINO_INSTALL_DIR:-}" ]; then
  INSTALL_DIR="$KAINO_INSTALL_DIR"
elif [ -d "$HOME/.local/bin" ] || echo ":$PATH:" | grep -q ":$HOME/.local/bin:"; then
  INSTALL_DIR="$HOME/.local/bin"
else
  INSTALL_DIR="$HOME/bin"
fi

mkdir -p "$INSTALL_DIR"
TMP_FILE=$(mktemp)
trap 'rm -f "$TMP_FILE"' EXIT

DOWNLOAD_URL="$DOWNLOAD_BASE_URL/$ASSET_NAME"
echo "Downloading $APP_NAME for $OS $ARCH..."
if ! curl -fsSL "$DOWNLOAD_URL" -o "$TMP_FILE"; then
  echo "Failed to download $DOWNLOAD_URL" >&2
  echo "A release binary for this platform may not be published yet." >&2
  exit 1
fi

chmod +x "$TMP_FILE"
mv "$TMP_FILE" "$INSTALL_DIR/$TARGET_NAME"

echo "Installed $APP_NAME to $INSTALL_DIR/$TARGET_NAME"

case ":$PATH:" in
  *":$INSTALL_DIR:"*)
    ;;
  *)
    echo "Add this to your shell profile to make '$APP_NAME' available globally:" >&2
    printf '  export PATH="%s:$PATH"\n' "$INSTALL_DIR" >&2
    ;;
esac

echo "Run '$APP_NAME' to launch Kaino Code."