package catalogue

import (
	"strings"
	"testing"
)

// A store provider says how its data is backed up (novox/hq ADR 0214); a provider of something that
// holds nothing does not have to.
func TestAStoreProviderWithoutABackupIsRefusedByTheCheck(t *testing.T) {
	bare, err := ParseManifest([]byte(`{"module":"pg","version":"1",
		"provides":[{"name":"postgres-database","scope":"mesh"}]}`))
	if err != nil {
		t.Fatalf("parsing refused it, and the rule is the check's: %v", err)
	}
	if problems := CheckBackup(bare); len(problems) != 1 || !strings.Contains(problems[0], "node-backup") {
		t.Fatalf("a store with no backup passed the check: %v", problems)
	}
	backed, err := ParseManifest([]byte(`{"module":"pg","version":"1",
		"provides":[{"name":"postgres-database","scope":"mesh"}],
		"resources":[{"id":"dumps","type":"directory","mode":"0700"}],
		"contributions":[{"seat":"node-backup","kind":"backup","content":"path ${dir:dumps}"}]}`))
	if err != nil {
		t.Fatal(err)
	}
	if problems := CheckBackup(backed); len(problems) != 0 {
		t.Fatalf("a store that contributes a backup was refused: %v", problems)
	}
	route, _ := ParseManifest([]byte(`{"module":"r","version":"1","provides":[{"name":"route","scope":"mesh"}]}`))
	if problems := CheckBackup(route); len(problems) != 0 {
		t.Fatalf("a route was asked for a backup: %v", problems)
	}
}

// A backup contribution names its module's own directories; one it does not declare is refused
// where it is written rather than reaching the holder as the literal text.
func TestABackupNamingAnUndeclaredDirectoryIsRefused(t *testing.T) {
	_, err := ParseManifest([]byte(`{"module":"pg","version":"1",
		"contributions":[{"seat":"node-backup","kind":"backup","content":"path ${dir:nowhere}"}]}`))
	if err == nil || !strings.Contains(err.Error(), "nowhere") {
		t.Fatalf("a backup of an undeclared directory was accepted: %v", err)
	}
}

// The holder receives every module's backup lines with each module's own directories filled, each
// module's under a comment naming it — and a kind written in a shell's grammar is left untouched.
func TestBackupContributionsArePlacedWithTheirModulesDirectories(t *testing.T) {
	pg, err := ParseManifest([]byte(`{"module":"pg","version":"1",
		"resources":[{"id":"dumps","type":"directory","path":"/srv/pg/dumps","mode":"0700"}],
		"contributions":[{"seat":"node-backup","kind":"backup","content":"run pg-dump-all\npath ${dir:dumps}"}]}`))
	if err != nil {
		t.Fatal(err)
	}
	mail, err := ParseManifest([]byte(`{"module":"mail","version":"1",
		"resources":[{"id":"spool","type":"directory","mode":"0700"}],
		"contributions":[{"seat":"node-backup","kind":"backup","content":"path ${dir:spool}"}]}`))
	if err != nil {
		t.Fatal(err)
	}
	placed, err := seatContributions([]Manifest{pg, mail}, BackupSeat, "backup", Rendering{})
	if err != nil {
		t.Fatal(err)
	}
	for _, want := range []string{"# pg\nrun pg-dump-all\npath /srv/pg/dumps\n", "# mail\npath /var/lib/mail/spool\n"} {
		if !strings.Contains(placed, want) {
			t.Errorf("placed contributions lack %q:\n%s", want, placed)
		}
	}
	if strings.Contains(placed, "${dir:") {
		t.Errorf("a directory reached the holder unfilled:\n%s", placed)
	}
}