#!/usr/bin/env bash
# Shark-no-Shitaku bootstrap — curl target
# curl -fsSL https://install.snowy-burbot.com | bash

set -euo pipefail

INSTALL_URL="https://install.snowy-burbot.com"
TEMP_DIR="$(mktemp -d)"
trap 'rm -rf "$TEMP_DIR"' EXIT

# ─────────────────────────────────────────────
# Colors
# ─────────────────────────────────────────────
CYAN='\033[0;36m'
BOLD='\033[1m'
DIM='\033[2m'
RESET='\033[0m'

cat << 'EOF'

  ___  _              _
 / __|| |_   __ _ _ _| |__
 \__ \| ' \ / _` | '_| / /
 |___/|_||_|\__,_|_| |_\_\
   _ _  ___         ___ _    _ _        _
  | ' \/ _ \ ___   / __| |_ (_) |_ __ _| |__  _  _
  |_||_\___/|___| | \__ \ ' \| |  _/ _` | / /| || |
                   |___/_||_|_|\__\__,_|_\_\ \_,_|

EOF

echo -e "${BOLD}${CYAN}Shark-no-Shitaku — Personal environment bootstrap${RESET}"
echo -e "${DIM}install.snowy-burbot.com${RESET}"
echo ""

# ─────────────────────────────────────────────
# Dependency check
# ─────────────────────────────────────────────
for dep in curl sha256sum; do
  if ! command -v "$dep" &>/dev/null; then
    echo "Error: required dependency '$dep' not found." >&2
    exit 1
  fi
done

# ─────────────────────────────────────────────
# Download installer
# ─────────────────────────────────────────────
echo -e "${DIM}Downloading installer...${RESET}"
curl -fsSL "$INSTALL_URL/installer.sh" -o "$TEMP_DIR/installer.sh"
curl -fsSL "$INSTALL_URL/checksums"    -o "$TEMP_DIR/SHA256SUMS"

chmod +x "$TEMP_DIR/installer.sh"

# ─────────────────────────────────────────────
# Checksum verification
# ─────────────────────────────────────────────
echo -e "${DIM}Verifying checksum...${RESET}"

expected="$(grep "installer.sh" "$TEMP_DIR/SHA256SUMS" | awk '{print $1}')"
if [[ -z "$expected" ]]; then
  echo "Error: no checksum found for installer.sh in checksums file." >&2
  exit 1
fi

actual="$(sha256sum "$TEMP_DIR/installer.sh" | awk '{print $1}')"
if [[ "$expected" != "$actual" ]]; then
  echo "Error: checksum mismatch for installer.sh!" >&2
  echo "  Expected: $expected" >&2
  echo "  Actual:   $actual"   >&2
  exit 1
fi

echo -e "${CYAN}Checksum verified.${RESET}"
echo ""

# ─────────────────────────────────────────────
# Hand off to installer
# ─────────────────────────────────────────────
exec "$TEMP_DIR/installer.sh" "$@"