#!/usr/bin/env sh
set -e

REPO="nasroykh/foxmayn_frappe_cli"
BINARY="ffc"

# --- detect OS ---
OS=$(uname -s | tr '[:upper:]' '[:lower:]')
case "$OS" in
  linux)  OS="linux" ;;
  darwin) OS="darwin" ;;
  *)
    echo "Unsupported OS: $OS" >&2
    exit 1
    ;;
esac

# --- detect arch ---
ARCH=$(uname -m)
case "$ARCH" in
  x86_64 | amd64) ARCH="amd64" ;;
  arm64 | aarch64) ARCH="arm64" ;;
  *)
    echo "Unsupported architecture: $ARCH" >&2
    exit 1
    ;;
esac

# --- resolve latest tag ---
VERSION=$(curl -fsSL "https://api.github.com/repos/${REPO}/releases/latest" \
  | grep '"tag_name"' \
  | sed 's/.*"tag_name": *"\([^"]*\)".*/\1/')

if [ -z "$VERSION" ]; then
  echo "Could not determine latest release version." >&2
  exit 1
fi

echo "Installing ffc ${VERSION} (${OS}/${ARCH})..."

ARCHIVE="ffc_${VERSION#v}_${OS}_${ARCH}.tar.gz"
URL="https://github.com/${REPO}/releases/download/${VERSION}/${ARCHIVE}"
CHECKSUM_URL="https://github.com/${REPO}/releases/download/${VERSION}/checksums.txt"

TMP=$(mktemp -d)
trap 'rm -rf "$TMP"' EXIT

# --- download archive + checksums ---
curl -fsSL "$URL" -o "$TMP/$ARCHIVE"
curl -fsSL "$CHECKSUM_URL" -o "$TMP/checksums.txt"

# --- verify checksum ---
cd "$TMP"
if command -v sha256sum > /dev/null 2>&1; then
  grep "$ARCHIVE" checksums.txt | sha256sum -c -
elif command -v shasum > /dev/null 2>&1; then
  grep "$ARCHIVE" checksums.txt | shasum -a 256 -c -
else
  echo "Warning: no sha256 tool found, skipping checksum verification." >&2
fi
cd - > /dev/null

# --- extract ---
tar -xzf "$TMP/$ARCHIVE" -C "$TMP"

# --- install ---
INSTALL_DIR=""
if [ -w "/usr/local/bin" ]; then
  INSTALL_DIR="/usr/local/bin"
elif [ -d "$HOME/.local/bin" ]; then
  INSTALL_DIR="$HOME/.local/bin"
else
  mkdir -p "$HOME/.local/bin"
  INSTALL_DIR="$HOME/.local/bin"
fi

mv "$TMP/$BINARY" "$INSTALL_DIR/$BINARY"
chmod +x "$INSTALL_DIR/$BINARY"

echo "Installed to $INSTALL_DIR/$BINARY"
echo "Run 'ffc --help' to get started. Use 'ffc init' to configure your first site."

# warn if install dir is not in PATH
case ":$PATH:" in
  *":$INSTALL_DIR:"*) ;;
  *)
    echo ""
    echo "Note: $INSTALL_DIR is not in your PATH."
    echo "Add this to your shell profile:"
    echo "  export PATH=\"\$PATH:$INSTALL_DIR\""
    ;;
esac