#!/bin/bash
set -e

# CONTRACT: GOMAXPROCS=1 (Frugality Manifesto)
COVERAGE_THRESHOLD=60

REPO_ROOT=$(git rev-parse --show-toplevel)
BACKEND_DIR="$REPO_ROOT/veza-backend-api"

echo "Backend Unit Tests (Low Power Mode)"

cd "$BACKEND_DIR"

export GOMAXPROCS=1
echo "Constraint: GOMAXPROCS=1"

echo "Running Unit Tests with coverage..."
go test ./internal/handlers/... ./internal/services/... -short -coverprofile=coverage.out -covermode=atomic

COVERAGE=$(go tool cover -func=coverage.out | tail -1 | awk '{print $3}' | tr -d '%')
echo "Coverage: ${COVERAGE}%"

if awk -v c="$COVERAGE" -v t="$COVERAGE_THRESHOLD" 'BEGIN {exit !(c+0>=t)}'; then
    echo "Coverage gate passed (>= ${COVERAGE_THRESHOLD}%)"
else
    echo "FATAL: Coverage ${COVERAGE}% is below threshold ${COVERAGE_THRESHOLD}%"
    exit 1
fi

echo "Unit tests passed."