//go:build mysql

package mysql

import (
	"os"
	"strings"
	"testing"

	"github.com/tinode/chat/server/store/types"
)

func TestCanUseManagedReportsRequiresAllOrganizationVisibility(t *testing.T) {
	if !canUseManagedReports(organizationVisibility{Scope: orgVisibilityAll}) {
		t.Fatal("all visibility should be allowed to use managed report scope")
	}
	for _, scope := range []string{orgVisibilitySelf, orgVisibilityFriends, ""} {
		if canUseManagedReports(organizationVisibility{Scope: scope}) {
			t.Fatalf("scope %q should not be allowed to use managed report scope", scope)
		}
	}
}

func TestReportMemberScopeWhereIncludesDepartmentAndVisibility(t *testing.T) {
	where, args := reportMemberScopeWhere(organizationVisibility{Scope: orgVisibilityFriends, UserID: 42}, "dep_ops")
	joined := strings.Join(where, " AND ")
	if !strings.Contains(joined, "m.department_id=?") {
		t.Fatalf("department filter missing from where: %s", joined)
	}
	if !strings.Contains(joined, "im_friendships") {
		t.Fatalf("friend visibility filter missing from where: %s", joined)
	}
	if len(args) != 4 || args[0] != "dep_ops" || args[1] != int64(42) || args[2] != int64(42) || args[3] != types.RelationshipFriend {
		t.Fatalf("unexpected args: %#v", args)
	}
}

func TestGroupAdminAccessModeDoesNotGrantOwner(t *testing.T) {
	mode := groupAdminAccessMode()
	if !mode.IsAdmin() {
		t.Fatalf("admin mode should grant admin access: %s", mode.String())
	}
	if mode.IsOwner() {
		t.Fatalf("admin mode must not grant owner access: %s", mode.String())
	}
}

func TestMessageSearchDoesNotClearScannedHead(t *testing.T) {
	source, err := os.ReadFile("tenant_adapter.go")
	if err != nil {
		t.Fatal(err)
	}
	if strings.Contains(string(source), "msg.Head = kvMapFromJSON(msg.Head)") {
		t.Fatal("message search must not clear Head after sqlx StructScan has already decoded it")
	}
}

func TestRuntimeOpenDoesNotAutoCreateOrMigrateTables(t *testing.T) {
	source, err := os.ReadFile("adapter.go")
	if err != nil {
		t.Fatal(err)
	}
	body := string(source)
	for _, tc := range []struct {
		name     string
		function string
		end      string
	}{
		{
			name:     "Open",
			function: "func (a *adapter) Open",
			end:      "\nfunc (a *adapter) Close",
		},
		{
			name:     "TenantAdapterFor",
			function: "func (a *adapter) TenantAdapterFor",
			end:      "\nfunc (a *adapter) tenantByID",
		},
	} {
		fn := sourceBetween(t, body, tc.function, tc.end)
		for _, forbidden := range []string{
			"ensureIMRegistrationInviteControlTables",
			"ensureIMTenantEntryControlTables",
			"ensureIMGroupBusinessTables",
			"ensureIMHTTPInfrastructureTables",
			"ensureIMAdminGovernanceTables",
			"ensureIMFileReviewTables",
			"ensureIMOrganizationVisibilityTables",
			"ensureIMAttendanceTables",
			"ensureIMMeetingNotesTables",
			"ensureSnowflakePrimaryKeys",
			"ensureUserIdentitySchema",
			"ensureIMRegistrationInviteUseTable",
			"CREATE DATABASE",
			"CREATE TABLE",
			"ALTER TABLE",
		} {
			if strings.Contains(fn, forbidden) {
				t.Fatalf("%s must not auto-create or auto-migrate schema; found %q", tc.name, forbidden)
			}
		}
	}
}

func sourceBetween(t *testing.T, source, startMarker, endMarker string) string {
	t.Helper()
	start := strings.Index(source, startMarker)
	if start < 0 {
		t.Fatalf("missing source marker %q", startMarker)
	}
	end := strings.Index(source[start:], endMarker)
	if end < 0 {
		t.Fatalf("missing source marker %q after %q", endMarker, startMarker)
	}
	return source[start : start+end]
}

func TestSearchPaginationCursorUsesLastReturnedRow(t *testing.T) {
	source, err := os.ReadFile("tenant_adapter.go")
	if err != nil {
		t.Fatal(err)
	}
	body := string(source)
	for _, tc := range []struct {
		name      string
		function  string
		forbidden string
		required  string
	}{
		{
			name:      "p2p message search",
			function:  "func (a *adapter) TenantMessageSearch",
			forbidden: "nextCursor = strconv.FormatInt(msg.SeqId, 10)",
			required:  "nextCursor = strconv.FormatInt(lastSeq, 10)",
		},
		{
			name:      "group message search",
			function:  "func (a *adapter) tenantGroupMessageSearch",
			forbidden: "nextCursor = strconv.FormatInt(msg.SeqId, 10)",
			required:  "nextCursor = strconv.FormatInt(lastSeq, 10)",
		},
		{
			name:      "favorite list",
			function:  "func (a *adapter) TenantFavoriteList",
			forbidden: "nextCursor = strconv.FormatInt(item.ID, 10)",
			required:  "nextCursor = strconv.FormatInt(lastID, 10)",
		},
	} {
		fn := functionSource(t, body, tc.function)
		if strings.Contains(fn, tc.forbidden) {
			t.Fatalf("%s must not use the extra fetched row as next cursor", tc.name)
		}
		if !strings.Contains(fn, tc.required) {
			t.Fatalf("%s must use the last returned row as next cursor", tc.name)
		}
	}
}

func TestTenantFileAccessIncludesAvatarAudienceRules(t *testing.T) {
	source, err := os.ReadFile("tenant_adapter.go")
	if err != nil {
		t.Fatal(err)
	}
	body := string(source)
	for _, want := range []string{
		"INNER JOIN im_friendships AS fs",
		"fs.user_id=? AND fs.peer_id=fml.userid AND fs.status=?",
		"INNER JOIN im_group_members AS gm",
		"gm.topic=fml.topic AND gm.user_id=? AND gm.member_status=?",
	} {
		if !strings.Contains(body, want) {
			t.Fatalf("file ACL must include avatar audience rule %q", want)
		}
	}
}

func functionSource(t *testing.T, source, marker string) string {
	t.Helper()
	start := strings.Index(source, marker)
	if start < 0 {
		t.Fatalf("function %q not found", marker)
	}
	next := strings.Index(source[start+len(marker):], "\nfunc ")
	if next < 0 {
		return source[start:]
	}
	return source[start : start+len(marker)+next]
}