#!/bin/bash
# install.sh - Set up PicUpper webcam capture on Raspberry Pi
# Creates cron job for 1 picture per minute

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
CAPTURE_SCRIPT="${SCRIPT_DIR}/capture-upload.sh"
CONFIG_FILE="${SCRIPT_DIR}/picupper.conf"
LOG_FILE="${SCRIPT_DIR}/picupper.log"

echo "=== PicUpper Installer ==="
echo ""

# Check dependencies
echo "Checking dependencies..."

if ! command -v fswebcam &>/dev/null; then
    echo "❌ fswebcam not installed"
    echo "   Run: sudo apt update && sudo apt install -y fswebcam"
    exit 1
fi
echo "✓ fswebcam"

if ! command -v curl &>/dev/null; then
    echo "❌ curl not installed"
    echo "   Run: sudo apt update && sudo apt install -y curl"
    exit 1
fi
echo "✓ curl"

# Check config
if [[ ! -f "$CONFIG_FILE" ]]; then
    echo ""
    echo "❌ Configuration file not found!"
    echo "   Please create it first:"
    echo "   cp picupper.conf.example picupper.conf"
    echo "   nano picupper.conf"
    exit 1
fi
echo "✓ Config file exists"

# Check API key is configured
# shellcheck source=/dev/null
source "$CONFIG_FILE"
if [[ -z "${API_KEY:-}" || "$API_KEY" == "your-api-key-here" ]]; then
    echo ""
    echo "❌ API key not configured in picupper.conf"
    echo "   Edit the file and set your API key"
    exit 1
fi
echo "✓ API key configured"

# Make scripts executable
chmod +x "$CAPTURE_SCRIPT"
chmod +x "${SCRIPT_DIR}/uninstall.sh" 2>/dev/null || true
echo "✓ Scripts are executable"

# Touch log file to ensure it exists
touch "$LOG_FILE" 2>/dev/null || true
echo "✓ Log file: $LOG_FILE"

# Set up cron job
CRON_JOB="* * * * * $CAPTURE_SCRIPT >> $LOG_FILE 2>&1"

echo ""
echo "Setting up cron job for 1 picture per minute..."

# Check if cron job already exists
if crontab -l 2>/dev/null | grep -q "$CAPTURE_SCRIPT"; then
    echo "⚠ Cron job already exists, skipping"
else
    # Add to crontab
    (crontab -l 2>/dev/null || true; echo "$CRON_JOB") | crontab -
    echo "✓ Cron job added"
fi

echo ""
echo "=== Installation Complete ==="
echo ""
echo "Your Raspberry Pi will now capture a picture every minute."
echo ""
echo "Useful commands:"
echo "  View logs:     tail -f $LOG_FILE"
echo "  Test capture:  $CAPTURE_SCRIPT --test"
echo "  Run manually:  $CAPTURE_SCRIPT"
echo "  Uninstall:     ${SCRIPT_DIR}/uninstall.sh"
echo ""
echo "To change frequency, edit crontab: crontab -e"