#!/bin/bash
# Full routing and DRC workflow
# Usage: ./scripts/route.sh
#
# Prerequisites:
#   1. Run place_8hp.py in KiCad scripting console
#   2. Export DSN: File → Export → Specctra DSN
#   3. Save PCB

set -e
cd "$(dirname "$0")/.."

PCB_FILE="SN-L00.kicad_pcb"
DSN_FILE="SN-L00.dsn"
SES_FILE="SN-L00.ses"
DRC_FILE="DRC.rpt"
FREEROUTING_JAR="/tmp/freerouting.jar"
FREEROUTING_URL="https://github.com/freerouting/freerouting/releases/download/v2.0.1/freerouting-2.0.1.jar"

echo "============================================"
echo "SN-L00 Routing Pipeline"
echo "============================================"

# Check DSN exists
if [ ! -f "$DSN_FILE" ]; then
    echo ""
    echo "ERROR: $DSN_FILE not found!"
    echo ""
    echo "In KiCad:"
    echo "  1. Run: exec(open('scripts/place_8hp.py').read())"
    echo "  2. Save: Ctrl+S"
    echo "  3. Export: File → Export → Specctra DSN"
    echo ""
    exit 1
fi

# Download Freerouting if needed
if [ ! -f "$FREEROUTING_JAR" ]; then
    echo "[1/3] Downloading Freerouting..."
    curl -L -o "$FREEROUTING_JAR" "$FREEROUTING_URL"
else
    echo "[1/3] Freerouting ready"
fi

# Run Freerouting
echo "[2/3] Running Freerouting..."
java -jar "$FREEROUTING_JAR" \
    -de "$DSN_FILE" \
    -do "$SES_FILE" \
    -mp 200 \
    -mt 1 \
    -oit 2>&1 | grep -E "(completed|INFO.*Auto|ERROR)" || true

if [ ! -f "$SES_FILE" ]; then
    echo "ERROR: Routing failed - no SES file created"
    exit 1
fi

echo "[3/3] Running DRC..."
echo ""
echo "============================================"
echo "In KiCad: File → Import → Specctra Session"
echo "Select: $SES_FILE"
echo "Then save (Ctrl+S)"
echo "============================================"
echo ""
echo "Waiting for you to import SES and save..."
read -p "Press Enter when done: "

# Run DRC from CLI
kicad-cli pcb drc \
    --severity-all \
    --units mm \
    --schematic-parity \
    -o "$DRC_FILE" \
    "$PCB_FILE" 2>&1

echo ""
echo "============================================"
echo "DRC Results:"
echo "============================================"
grep -E "^(Found|\*\*)" "$DRC_FILE" || cat "$DRC_FILE"
echo ""

# Count errors vs warnings
ERRORS=$(grep -c "error$" "$DRC_FILE" 2>/dev/null || echo "0")
WARNINGS=$(grep -c "warning$" "$DRC_FILE" 2>/dev/null || echo "0")

echo "Summary: $ERRORS errors, $WARNINGS warnings"

if [ "$ERRORS" -eq 0 ]; then
    echo ""
    echo "✓ No DRC errors - ready for manufacturing!"
else
    echo ""
    echo "Fix errors and re-run: ./scripts/route.sh"
fi