#!/bin/bash
set -euo pipefail

# ==============================================================================
# Croc Installation Script
# ==============================================================================
# Installs croc - Secure, fast file transfer tool
# 
# Threat Model:
#   - Insecure file transfer methods (email, Dropbox, USB drives)
#   - Cloud storage snooping and data breaches
#   - Man-in-the-middle attacks during file transfer
#   - Metadata exposure in file sharing
#
# How Croc Protects:
#   - End-to-end encryption using PAKE (Password Authenticated Key Exchange)
#   - No account or login required
#   - Direct peer-to-peer transfer (optional relay for NAT traversal)
#   - Automatic compression
#   - Resume capability for interrupted transfers
#
# Source: https://github.com/schollz/croc
# ==============================================================================

# Colors
readonly GREEN='\033[0;32m'
readonly YELLOW='\033[1;33m'
readonly NC='\033[0m'

log() { echo -e "${GREEN}[INFO]${NC} $*"; }
warn() { echo -e "${YELLOW}[WARN]${NC} $*"; }

echo "=== Croc Installation ==="
echo ""

log "Downloading and installing croc..."
curl https://getcroc.schollz.com | bash

echo ""
log "Verifying installation..."
if command -v croc >/dev/null 2>&1; then
    log "✅ Croc installed successfully!"
    croc --version
else
    warn "Croc not found in PATH - may need to add ~/.local/bin to PATH"
    exit 1
fi

echo ""
echo "=== Installation Complete ==="
echo ""
echo "Usage Examples:"
echo ""
echo "  Send a file:"
echo "    croc send myfile.pdf"
echo "    # Share the code phrase with recipient"
echo ""
echo "  Receive a file:"
echo "    croc 1234-code-word-phrase"
echo ""
echo "  Send entire directory:"
echo "    croc send /path/to/folder"
echo ""
echo "  Custom code phrase:"
echo "    croc send --code my-secret-phrase file.txt"
echo ""
echo "📖 Documentation: https://github.com/schollz/croc"