#!/usr/bin/env bash
# Tests for NeoForge API
# Covers: NeoForge maven metadata, version resolution, download URL
# Usage: ./tests/test_neoforge.sh [mc_version]

source "$(dirname "$0")/test_utils.sh"

MC_VERSION="${1:-$(get_latest_mc_version)}"

if [[ -z "$MC_VERSION" ]]; then
  echo "Could not determine MC version"
  exit 1
fi

echo -e "\n${BOLD}NeoForge API Tests (MC ${MC_VERSION})${NC}"
echo ""

# ---------- NeoForge Maven metadata ----------------------------------------

test_neoforge_metadata_reachable() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  assert_not_empty "$body" "NeoForge maven metadata should be reachable"
}

test_neoforge_metadata_is_xml() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  assert_contains "$body" "<metadata>" "Should be valid XML"
}

test_neoforge_metadata_has_versions() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  assert_contains "$body" "<versions>" "Should have <versions> element"
}

test_neoforge_metadata_has_latest() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  local latest
  latest=$(echo "$body" | xmllint --xpath "/metadata/versioning/latest/text()" - 2>/dev/null)
  assert_not_empty "$latest" "Metadata should have a latest version"
}

test_neoforge_metadata_has_release() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  local release
  release=$(echo "$body" | xmllint --xpath "/metadata/versioning/release/text()" - 2>/dev/null)
  assert_not_empty "$release" "Metadata should have a release version"
}

# ---------- NeoForge version resolution ------------------------------------
# NeoForge versions start with MC minor version (e.g., MC 1.20.4 -> 20.4.x)

test_neoforge_version_prefix() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  local versions
  versions=$(echo "$body" | xmllint --xpath "/metadata/versioning/versions/version/text()" - 2>/dev/null)

  # Extract MC minor from version (e.g., "1.21.1" -> "21.1")
  local mc_minor="${MC_VERSION#1.}"

  # Check that there are versions matching this MC minor prefix
  local matching
  matching=$(echo "$versions" | tr ' ' '\n' | grep "^${mc_minor}\." | head -1)

  assert_not_empty "$matching" \
    "Should find at least one NeoForge version starting with ${mc_minor}"
}

test_neoforge_stable_versions_exist() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  local versions
  versions=$(echo "$body" | xmllint --xpath "/metadata/versioning/versions/version/text()" - 2>/dev/null)

  local mc_minor="${MC_VERSION#1.}"
  local stable_count
  stable_count=$(echo "$versions" | tr ' ' '\n' | grep -v -- '-beta\|-alpha' | grep -c "^${mc_minor}\." || true)

  if [[ "$stable_count" -gt 0 ]]; then
    return 0
  else
    echo "ASSERT FAILED: No stable NeoForge versions found for MC minor ${mc_minor}"
    echo "  This may be valid for a very new MC version"
    return 1
  fi
}

test_neoforge_no_beta_in_stable() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  local versions
  versions=$(echo "$body" | xmllint --xpath "/metadata/versioning/versions/version/text()" - 2>/dev/null)

  local mc_minor="${MC_VERSION#1.}"
  local stable_versions
  stable_versions=$(echo "$versions" | tr ' ' '\n' | grep -v -- '-beta\|-alpha' | grep "^${mc_minor}\." | sort -V | tail -5)

  # None of the stable versions should contain beta or alpha
  local bad_count
  bad_count=$(echo "$stable_versions" | grep -c -- '-beta\|-alpha' || true)
  assert_equals "$bad_count" "0" "Stable versions should not contain beta/alpha"
}

test_neoforge_latest_for_mc_is_stable() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  local versions
  versions=$(echo "$body" | xmllint --xpath "/metadata/versioning/versions/version/text()" - 2>/dev/null)

  local mc_minor="${MC_VERSION#1.}"
  local latest_for_mc
  latest_for_mc=$(echo "$versions" | tr ' ' '\n' | grep -v -- '-beta\|-alpha' | grep "^${mc_minor}\." | sort -V | tail -1)

  if [[ -z "$latest_for_mc" ]]; then
    echo "No stable NeoForge version found for MC ${MC_VERSION}"
    return 1
  fi

  local bad=$(echo "$latest_for_mc" | grep -c -- '-beta\|-alpha' || true)
  assert_equals "$bad" "0" "Latest stable version for MC ${MC_VERSION} (${latest_for_mc}) should not contain beta/alpha"
}

# ---------- NeoForge download URL ------------------------------------------

_neoforge_latest_for_mc() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  local versions
  versions=$(echo "$body" | xmllint --xpath "/metadata/versioning/versions/version/text()" - 2>/dev/null)
  local mc_minor="${MC_VERSION#1.}"
  echo "$versions" | tr ' ' '\n' | grep -v -- '-beta\|-alpha' | grep "^${mc_minor}\." | sort -V | tail -1
}

test_neoforge_download_url_format() {
  local latest
  latest=$(_neoforge_latest_for_mc)

  if [[ -z "$latest" ]]; then
    echo "No stable NeoForge version found for MC ${MC_VERSION}"
    return 1
  fi

  local expected_url="https://maven.neoforged.net/releases/net/neoforged/neoforge/${latest}/neoforge-${latest}-installer.jar"
  assert_matches "$expected_url" "maven.neoforged.net.*installer\.jar" \
    "URL should point to NeoForge maven installer"
}

test_neoforge_download_url_reachable() {
  local latest
  latest=$(_neoforge_latest_for_mc)

  if [[ -z "$latest" ]]; then
    echo "No stable NeoForge version found for MC ${MC_VERSION}"
    return 1
  fi

  local url="https://maven.neoforged.net/releases/net/neoforged/neoforge/${latest}/neoforge-${latest}-installer.jar"
  assert_http_ok "$url" "NeoForge installer URL should return HTTP 200"
}

# ---------- NeoForge version sort check ------------------------------------

test_neoforge_versions_sorted_ascending() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  local versions
  versions=$(echo "$body" | xmllint --xpath "/metadata/versioning/versions/version/text()" - 2>/dev/null)

  local mc_minor="${MC_VERSION#1.}"
  local last_version
  last_version=$(echo "$versions" | tr ' ' '\n' | grep -v -- '-beta\|-alpha' | grep "^${mc_minor}\." | sort -V | tail -1)

  # The last version after sort -V should be the same as the latest from metadata
  local meta_latest
  meta_latest=$(echo "$body" | xmllint --xpath "/metadata/versioning/latest/text()" - 2>/dev/null)

  if [[ "$last_version" == "$meta_latest" ]]; then
    return 0
  else
    echo "ASSERT FAILED: sort -V last version (${last_version}) != metadata latest (${meta_latest})"
    echo "  This is informational - metadata latest may include beta"
    return 77  # skip
  fi
}

# ---------- Specific MC version support ------------------------------------

test_neoforge_supports_1_21_1() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  local versions
  versions=$(echo "$body" | xmllint --xpath "/metadata/versioning/versions/version/text()" - 2>/dev/null)

  local count
  count=$(echo "$versions" | tr ' ' '\n' | grep -v -- '-beta\|-alpha' | grep -c "^21.1\." || true)

  if [[ "$count" -gt 0 ]]; then
    return 0
  else
    echo "ASSERT FAILED: No NeoForge versions found for MC 1.21.1 (21.1.x)"
    return 1
  fi
}

test_neoforge_supports_1_20_4() {
  local body
  body=$(api_get "https://maven.neoforged.net/releases/net/neoforged/neoforge/maven-metadata.xml")
  local versions
  versions=$(echo "$body" | xmllint --xpath "/metadata/versioning/versions/version/text()" - 2>/dev/null)

  local count
  count=$(echo "$versions" | tr ' ' '\n' | grep -v -- '-beta\|-alpha' | grep -c "^20.4\." || true)

  if [[ "$count" -gt 0 ]]; then
    return 0
  else
    echo "ASSERT FAILED: No NeoForge versions found for MC 1.20.4 (20.4.x)"
    return 1
  fi
}

# ---------- Run all tests --------------------------------------------------

run_test "NeoForge maven metadata is reachable" test_neoforge_metadata_reachable
run_test "Metadata is valid XML" test_neoforge_metadata_is_xml
run_test "Metadata has <versions> element" test_neoforge_metadata_has_versions
run_test "Metadata has <latest> version" test_neoforge_metadata_has_latest
run_test "Metadata has <release> version" test_neoforge_metadata_has_release
run_test "Versions exist with MC minor prefix" test_neoforge_version_prefix
run_test "Stable versions exist for current MC" test_neoforge_stable_versions_exist
run_test "Stable versions have no beta/alpha tags" test_neoforge_no_beta_in_stable
run_test "Latest stable version for MC is stable" test_neoforge_latest_for_mc_is_stable
run_test "Download URL matches NeoForge maven pattern" test_neoforge_download_url_format
run_test "Download URL returns HTTP 200" test_neoforge_download_url_reachable
run_test "Versions are sorted in ascending order" test_neoforge_versions_sorted_ascending
run_test "NeoForge supports MC 1.21.1 (21.1.x)" test_neoforge_supports_1_21_1
run_test "NeoForge supports MC 1.20.4 (20.4.x)" test_neoforge_supports_1_20_4

print_summary