package config

import "testing"

// loadedEnvVars is every environment variable Load reads. Keeping the list
// beside the loaders rather than in a test file lets other packages that call
// Load in a test reuse it, so only one list has to stay in sync with the code.
var loadedEnvVars = []string{
	"IS_DEV_ENV",
	"DATABASE_URL",
	"DB_MAX_OPEN_CONNS", "DB_MAX_IDLE_CONNS", "DB_SESSION_COORDINATION_MAX_OPEN_CONNS", "DB_CONN_MAX_LIFETIME",
	"DB_CONN_MAX_IDLE_TIME", "DB_STATEMENT_TIMEOUT",
	"PORT", "APPVIEW_PORT",
	"HTTP_READ_HEADER_TIMEOUT", "HTTP_READ_TIMEOUT", "HTTP_WRITE_TIMEOUT",
	"HTTP_IDLE_TIMEOUT", "HTTP_SHUTDOWN_TIMEOUT",
	"PLC_DIRECTORY_URL", "IDENTITY_PLC_URL", "IDENTITY_CACHE_TTL", "HANDLE_WELL_KNOWN_HOSTS",
	"OAUTH_SEAL_SECRET", "ENCRYPTION_KEY", "APPVIEW_PUBLIC_URL",
	"OAUTH_CLIENT_PRIVATE_KEY", "OAUTH_CLIENT_KEY_ID",
	"INSTANCE_DID", "INSTANCE_DOMAIN",
	"COMMUNITY_CREATORS", "TRUSTED_BRIDGE_PDS_HOSTS", "SKIP_DID_WEB_VERIFICATION",
	"MODERATION_ADMINS", "MODERATION_IDEMPOTENCY_RETENTION", "MODERATION_IDEMPOTENCY_MAX_LIVE_KEYS",
	"BRIDGED_VOTE_POLL_INTERVAL", "BRIDGED_VOTE_POLL_LOOKBACK", "BRIDGED_VOTE_POLL_SWEEP_CAP",
	"PDS_URL", "PDS_INSTANCE_HANDLE", "PDS_INSTANCE_PASSWORD", "PDS_ADMIN_PASSWORD",
	"JETSTREAM_FEEDS", "REDRIVE_INTERVAL", "IDENTITY_NEGATIVE_CACHE_TTL",
	"CURSOR_SECRET",
	"TURNSTILE_SITE_KEY", "TURNSTILE_SECRET_KEY", "TURNSTILE_SITEVERIFY_URL",
	// The IMAGE_PROXY_* set is read by imageproxy.ConfigFromEnv rather than by
	// this package — except IMAGE_PROXY_ENABLED, which Load re-reads through
	// boolVar because it gates a security invariant. Either way this list is a
	// hand-maintained mirror with no compile-time link to the parsing. A
	// variable added there and not here leaks between tests silently — keep the
	// two in sync, or move the parsing here.
	"IMAGE_PROXY_ENABLED", "IMAGE_PROXY_BASE_URL", "IMAGE_PROXY_CDN_URL",
	"CLOUDFLARE_CACHE_PURGE_ZONE_ID", "CLOUDFLARE_CACHE_PURGE_API_TOKEN",
	"IMAGE_PROXY_CACHE_PATH", "IMAGE_PROXY_CACHE_MAX_GB", "IMAGE_PROXY_CACHE_TTL_DAYS",
	"IMAGE_PROXY_CLEANUP_INTERVAL_MINUTES", "IMAGE_PROXY_FETCH_TIMEOUT_SECONDS",
	"IMAGE_PROXY_MAX_SOURCE_SIZE_MB", "IMAGE_PROXY_MAX_SOURCE_MEGAPIXELS",
	"IMAGE_PROXY_MAX_CONCURRENT_PROCESSES", "IMAGE_PROXY_MAX_IN_FLIGHT_REQUESTS",
	"MEDIA_UPLOAD_MAX_CONCURRENT", "MEDIA_UPLOAD_MAX_LONG_EDGE", "MEDIA_UPLOAD_RATE_PER_10MIN",
	"MEDIA_UPLOAD_BYTES_PER_DAY", "MEDIA_UPLOAD_WARN_FRACTION",
	"ALLOW_UNPROXIED_MEDIA",
	"POST_SUBMISSIONS_MAX_PER_COMMUNITY", "POST_SUBMISSIONS_WINDOW",
	"POST_SUBMISSIONS_DEDUPE_WINDOW",
}

// ClearEnvForTest blanks every environment variable Load reads, restoring them
// when the test finishes.
//
// Any test that calls Load needs this. Without it the result depends on the
// developer's shell: an exported JETSTREAM_URL left over from before the
// legacy variables were retired makes Load fail, and the test reports a
// failure that has nothing to do with what it was checking.
//
// Note this *sets* the variables empty rather than unsetting them, which is
// equivalent only because this package reads exclusively through lookup and
// never distinguishes unset from empty. Because it uses t.Setenv, a test that
// calls it cannot also call t.Parallel.
func ClearEnvForTest(t *testing.T) {
	t.Helper()
	for _, name := range loadedEnvVars {
		t.Setenv(name, "")
	}
	for _, name := range legacyJetstreamVars {
		t.Setenv(name, "")
	}
}