#!/usr/bin/env bash
# Cocache CLI installer - downloads pre-built binaries from get.cocache.dev.
# Usage:
#   curl -fsSL https://get.cocache.dev/install.sh | bash
#   COCACHE_VERSION=v0.1.0 curl -fsSL https://get.cocache.dev/install.sh | bash
set -euo pipefail

BASE_URL="https://get.cocache.dev"
VERSION="${COCACHE_VERSION:-latest}"
INSTALL_DIR="${INSTALL_DIR:-$HOME/.local/bin}"

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

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

# ── resolve version ───────────────────────────────────────────────────────────
if [ "$VERSION" = "latest" ]; then
  VERSION=$(curl -fsSL "${BASE_URL}/releases/latest.txt")
fi

if [ -z "$VERSION" ]; then
  echo "error: could not resolve latest version from ${BASE_URL}/releases/latest.txt" >&2
  exit 1
fi

# ── download & install ────────────────────────────────────────────────────────
TARBALL="cocache_${OS}_${ARCH}.tar.gz"
URL="${BASE_URL}/releases/${VERSION}/${TARBALL}"

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

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

curl -fsSL "$URL" -o "$TMP/$TARBALL"
tar -xzf "$TMP/$TARBALL" -C "$TMP"

mkdir -p "$INSTALL_DIR"
mv "$TMP/cocache"  "$INSTALL_DIR/cocache"
mv "$TMP/cocached" "$INSTALL_DIR/cocached"
chmod +x "$INSTALL_DIR/cocache" "$INSTALL_DIR/cocached"

echo ""
echo "Installed cocache + cocached to $INSTALL_DIR"

# ── PATH hint ─────────────────────────────────────────────────────────────────
if ! echo "$PATH" | grep -q "$INSTALL_DIR"; then
  echo ""
  echo "  Add this to your shell profile (~/.zshrc or ~/.bashrc):"
  echo "    export PATH=\"\$HOME/.local/bin:\$PATH\""
fi

echo ""
echo "Next steps:"
echo "  1. Sign in at https://cocache.dev and create a project - note the slug."
echo "  2. cocache login --server https://api.cocache.dev --project <slug> --token <token>"
echo "  3. cocache init  --server https://api.cocache.dev --project <slug> --client <claude|cursor|codex|windsurf>"
echo ""
echo "  The Setup tab in your dashboard shows these commands pre-filled."