feat: add `memo_resource` model

api/memo_resource.go

+package api
+
+type MemoResource struct {
+	MemoID     int
+	ResourceID int
+	CreatedTs  int64
+	UpdatedTs  int64
+}
+
+type MemoResourceUpsert struct {
+	MemoID     int
+	ResourceID int
+	UpdatedTs  *int64
+}
+
+type MemoResourceFind struct {
+	MemoID     *int
+	ResourceID *int
+}
+
+type MemoResourceDelete struct {
+	MemoID     int
+	ResourceID *int
+}

store/db/migration/dev/LATEST__SCHEMA.sql

@@ -164,6 +164,7 @@ CREATE TABLE memo_resource (
   memo_id INTEGER NOT NULL,
   resource_id INTEGER NOT NULL,
   created_ts BIGINT NOT NULL DEFAULT (strftime('%s', 'now')),
+  updated_ts BIGINT NOT NULL DEFAULT (strftime('%s', 'now')),
   FOREIGN KEY(memo_id) REFERENCES memo(id) ON DELETE CASCADE,
   FOREIGN KEY(resource_id) REFERENCES resource(id) ON DELETE CASCADE
 );

store/memo_resource.go

+package store
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"strings"
+
+	"github.com/usememos/memos/api"
+	"github.com/usememos/memos/common"
+)
+
+// memoResourceRaw is the store model for an MemoResource.
+// Fields have exactly the same meanings as MemoResource.
+type memoResourceRaw struct {
+	MemoID     int
+	ResourceID int
+	CreatedTs  int64
+	UpdatedTs  int64
+}
+
+func (raw *memoResourceRaw) toMemoResource() *api.MemoResource {
+	return &api.MemoResource{
+		MemoID:     raw.MemoID,
+		ResourceID: raw.ResourceID,
+		CreatedTs:  raw.CreatedTs,
+		UpdatedTs:  raw.UpdatedTs,
+	}
+}
+
+func (s *Store) FindMemoResourceList(ctx context.Context, find *api.MemoResourceFind) ([]*api.MemoResource, error) {
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return nil, FormatError(err)
+	}
+	defer tx.Rollback()
+
+	memoResourceRawList, err := findMemoResourceList(ctx, tx, find)
+	if err != nil {
+		return nil, err
+	}
+
+	list := []*api.MemoResource{}
+	for _, raw := range memoResourceRawList {
+		memoResource := raw.toMemoResource()
+		list = append(list, memoResource)
+	}
+
+	return list, nil
+}
+
+func (s *Store) UpsertMemoResource(ctx context.Context, upsert *api.MemoResourceUpsert) (*api.MemoResource, error) {
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return nil, FormatError(err)
+	}
+	defer tx.Rollback()
+
+	memoResourceRaw, err := upsertMemoResource(ctx, tx, upsert)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := tx.Commit(); err != nil {
+		return nil, FormatError(err)
+	}
+
+	return memoResourceRaw.toMemoResource(), nil
+}
+
+func (s *Store) DeleteMemoResource(ctx context.Context, delete *api.MemoResourceDelete) error {
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return FormatError(err)
+	}
+	defer tx.Rollback()
+
+	if err := deleteMemoResource(ctx, tx, delete); err != nil {
+		return FormatError(err)
+	}
+
+	if err := tx.Commit(); err != nil {
+		return FormatError(err)
+	}
+
+	return nil
+}
+
+func findMemoResourceList(ctx context.Context, tx *sql.Tx, find *api.MemoResourceFind) ([]*memoResourceRaw, error) {
+	where, args := []string{"1 = 1"}, []interface{}{}
+
+	if v := find.MemoID; v != nil {
+		where, args = append(where, "memo_id = ?"), append(args, *v)
+	}
+	if v := find.ResourceID; v != nil {
+		where, args = append(where, "resource_id = ?"), append(args, *v)
+	}
+
+	query := `
+		SELECT
+			memo_id,
+			resource_id,
+			created_ts,
+			updated_ts
+		FROM memo_resource
+		WHERE ` + strings.Join(where, " AND ") + `
+		ORDER BY updated_ts DESC
+	`
+	rows, err := tx.QueryContext(ctx, query, args...)
+	if err != nil {
+		return nil, FormatError(err)
+	}
+	defer rows.Close()
+
+	memoResourceRawList := make([]*memoResourceRaw, 0)
+	for rows.Next() {
+		var memoResourceRaw memoResourceRaw
+		if err := rows.Scan(
+			&memoResourceRaw.MemoID,
+			&memoResourceRaw.ResourceID,
+			&memoResourceRaw.CreatedTs,
+			&memoResourceRaw.UpdatedTs,
+		); err != nil {
+			return nil, FormatError(err)
+		}
+
+		memoResourceRawList = append(memoResourceRawList, &memoResourceRaw)
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	return memoResourceRawList, nil
+}
+
+func upsertMemoResource(ctx context.Context, tx *sql.Tx, upsert *api.MemoResourceUpsert) (*memoResourceRaw, error) {
+	set := []string{"memo_id", "resource_id"}
+	args := []interface{}{upsert.MemoID, upsert.ResourceID}
+	placeholder := []string{"?", "?"}
+
+	if v := upsert.UpdatedTs; v != nil {
+		set, args, placeholder = append(set, "updated_ts"), append(args, v), append(placeholder, "?")
+	}
+
+	query := `
+		INSERT INTO memo_resource (
+			` + strings.Join(set, ", ") + `
+		)
+		VALUES (` + strings.Join(placeholder, ",") + `)
+		ON CONFLICT(memo_id, resource_id) DO UPDATE 
+		SET
+			updated_ts = EXCLUDED.updated_ts
+		RETURNING memo_id, resource_id, created_ts, updated_ts
+	`
+	var memoResourceRaw memoResourceRaw
+	if err := tx.QueryRowContext(ctx, query, args...).Scan(
+		&memoResourceRaw.MemoID,
+		&memoResourceRaw.ResourceID,
+		&memoResourceRaw.CreatedTs,
+		&memoResourceRaw.UpdatedTs,
+	); err != nil {
+		return nil, FormatError(err)
+	}
+
+	return &memoResourceRaw, nil
+}
+
+func deleteMemoResource(ctx context.Context, tx *sql.Tx, delete *api.MemoResourceDelete) error {
+	where, args := []string{"memo_id = ?"}, []interface{}{delete.MemoID}
+
+	if v := delete.ResourceID; v != nil {
+		where, args = append(where, "resource_id = ?"), append(args, *v)
+	}
+
+	result, err := tx.ExecContext(ctx, `
+		DELETE FROM memo WHERE `+strings.Join(where, " AND "), args...)
+	if err != nil {
+		return FormatError(err)
+	}
+
+	rows, _ := result.RowsAffected()
+	if rows == 0 {
+		return &common.Error{Code: common.NotFound, Err: fmt.Errorf("memo resource not found")}
+	}
+
+	return nil
+}