#!/usr/bin/env bash
# Sprint 16: генерация бейджей покрытия / статуса в badges/*.svg.
#
# Запускается вручную или из CI после `dotnet test --collect:"XPlat Code Coverage"`.
# Вход: путь к cobertura.xml (или авто-поиск в TestResults/).
# Выход: badges/coverage.svg + ссылка для добавления в README.
#
# Без зависимостей кроме curl, python3, sed.

set -euo pipefail

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
BADGES_DIR="$ROOT/badges"
mkdir -p "$BADGES_DIR"

# 1. Coverage badge
CXML="${1:-}"
if [[ -z "$CXML" ]]; then
  CXML="$(find "$ROOT" -name 'coverage.cobertura.xml' -path '*/TestResults/*' 2>/dev/null | head -1)"
fi
if [[ -z "$CXML" || ! -f "$CXML" ]]; then
  echo "Usage: $0 [path/to/coverage.cobertura.xml]" >&2
  echo "Run 'dotnet test --collect:XPlat Code Coverage' first." >&2
  exit 1
fi

PCT=$(python3 -c "
import xml.etree.ElementTree as ET
r = ET.parse('$CXML').getroot()
# Считаем суммарное покрытие по Application + Domain (главные пакеты).
covered, valid = 0, 0
for pkg in r.iter('package'):
    if pkg.get('name') in ('foodmarket.Application', 'foodmarket.Domain'):
        for line in pkg.iter('line'):
            valid += 1
            if int(line.get('hits', '0')) > 0:
                covered += 1
print(f'{100*covered/valid:.0f}' if valid else '0')
")

# Цвет по порогам — shields.io стандарт.
COLOR="brightgreen"
if (( PCT < 50 )); then COLOR="red"
elif (( PCT < 70 )); then COLOR="yellow"
elif (( PCT < 85 )); then COLOR="green"
fi

# Скачиваем static SVG от shields.io (legacy endpoint без рантайма).
URL="https://img.shields.io/badge/coverage-${PCT}%25-${COLOR}?style=flat-square&label=coverage%20(app%2Bdomain)"
echo "[badges] coverage = ${PCT}% → ${COLOR}"
echo "[badges] fetching $URL"
if curl -fsS "$URL" -o "$BADGES_DIR/coverage.svg"; then
  echo "[badges] wrote $BADGES_DIR/coverage.svg ($(wc -c < "$BADGES_DIR/coverage.svg") bytes)"
else
  # Offline-fallback: SVG inline.
  cat > "$BADGES_DIR/coverage.svg" <<SVG
<svg xmlns="http://www.w3.org/2000/svg" width="170" height="20" role="img" aria-label="coverage: ${PCT}%">
  <linearGradient id="s" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/><stop offset="1" stop-opacity=".1"/></linearGradient>
  <rect rx="3" width="170" height="20" fill="#555"/>
  <rect rx="3" x="130" width="40" height="20" fill="#4c1"/>
  <text x="65" y="14" fill="#fff" font-family="Verdana,sans-serif" font-size="11" text-anchor="middle">coverage (app+domain)</text>
  <text x="150" y="14" fill="#fff" font-family="Verdana,sans-serif" font-size="11" text-anchor="middle">${PCT}%</text>
</svg>
SVG
  echo "[badges] offline fallback SVG written"
fi

# 2. Build/CI status — static shields. Реальный badge берёт SVG c
# Forgejo `actions/workflows/ci.yml/badge.svg` (auto-обновляется).
# Тут просто проверяем, что mirror.svg есть в repo для случая offline-read.
cat > "$BADGES_DIR/ci-status-link.md" <<MD
# CI status badges

Forgejo (primary, обновляется автоматически на каждый workflow run):

\`\`\`markdown
![CI](http://127.0.0.1:3000/nns/food-market/actions/workflows/ci.yml/badge.svg)
![Docker API](http://127.0.0.1:3000/nns/food-market/actions/workflows/docker-api.yml/badge.svg)
![Regression](http://127.0.0.1:3000/nns/food-market/actions/workflows/regression.yml/badge.svg)
\`\`\`

GitHub mirror (для external reader'ов):

\`\`\`markdown
![CI](https://github.com/nurdotnet/food-market/actions/workflows/ci.yml/badge.svg)
\`\`\`

Coverage (regenerated by \`scripts/generate-badges.sh\`):

\`\`\`markdown
![coverage](./badges/coverage.svg)
\`\`\`
MD

echo "[badges] done"