mirror of
https://github.com/usememos/memos.git
synced 2024-11-16 19:56:11 +08:00
324 lines
8.2 KiB
Go
324 lines
8.2 KiB
Go
package postgres
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import (
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"context"
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"database/sql"
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"encoding/binary"
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"fmt"
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"strings"
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"github.com/Masterminds/squirrel"
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"github.com/pkg/errors"
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"github.com/usememos/memos/store"
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)
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func (d *DB) CreateMemo(ctx context.Context, create *store.Memo) (*store.Memo, error) {
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// Initialize a Squirrel statement builder for PostgreSQL
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builder := squirrel.Insert("memo").
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PlaceholderFormat(squirrel.Dollar).
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Columns("creator_id", "content", "visibility")
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// Add initial values for the columns
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values := []any{create.CreatorID, create.Content, create.Visibility}
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// Conditionally add other fields and values
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if create.ID != 0 {
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builder = builder.Columns("id")
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values = append(values, create.ID)
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}
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if create.CreatedTs != 0 {
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builder = builder.Columns("created_ts")
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values = append(values, squirrel.Expr("to_timestamp(?)", create.CreatedTs))
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}
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if create.UpdatedTs != 0 {
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builder = builder.Columns("updated_ts")
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values = append(values, squirrel.Expr("to_timestamp(?)", create.UpdatedTs))
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}
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if create.RowStatus != "" {
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builder = builder.Columns("row_status")
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values = append(values, create.RowStatus)
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}
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// Add all the values at once
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builder = builder.Values(values...)
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// Add the RETURNING clause to get the ID of the inserted row
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builder = builder.Suffix("RETURNING id")
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// Prepare and execute the query
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query, args, err := builder.ToSql()
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if err != nil {
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return nil, err
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}
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var id int32
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err = d.db.QueryRowContext(ctx, query, args...).Scan(&id)
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if err != nil {
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return nil, err
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}
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// Retrieve the newly created memo
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memo, err := d.GetMemo(ctx, &store.FindMemo{ID: &id})
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if err != nil {
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return nil, err
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}
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if memo == nil {
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return nil, errors.Errorf("failed to create memo")
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}
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return memo, nil
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}
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func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo, error) {
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// Start building the SELECT statement
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builder := squirrel.Select(
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"memo.id AS id",
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"memo.creator_id AS creator_id",
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"EXTRACT(EPOCH FROM memo.created_ts) AS created_ts",
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"EXTRACT(EPOCH FROM memo.updated_ts) AS updated_ts",
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"memo.row_status AS row_status",
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"memo.content AS content",
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"memo.visibility AS visibility",
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"MAX(CASE WHEN memo_organizer.pinned = 1 THEN 1 ELSE 0 END) AS pinned").
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From("memo").
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LeftJoin("memo_organizer ON memo.id = memo_organizer.memo_id").
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LeftJoin("resource ON memo.id = resource.memo_id").
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GroupBy("memo.id").
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PlaceholderFormat(squirrel.Dollar)
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// Add conditional where clauses
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if v := find.ID; v != nil {
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builder = builder.Where("memo.id = ?", *v)
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}
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if v := find.CreatorID; v != nil {
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builder = builder.Where("memo.creator_id = ?", *v)
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}
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if v := find.RowStatus; v != nil {
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builder = builder.Where("memo.row_status = ?", *v)
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}
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if v := find.CreatedTsBefore; v != nil {
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builder = builder.Where("EXTRACT(EPOCH FROM memo.created_ts) < ?", *v)
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}
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if v := find.CreatedTsAfter; v != nil {
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builder = builder.Where("EXTRACT(EPOCH FROM memo.created_ts) > ?", *v)
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}
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if v := find.Pinned; v != nil {
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builder = builder.Where("memo_organizer.pinned = 1")
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}
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if v := find.ContentSearch; len(v) != 0 {
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for _, s := range v {
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builder = builder.Where("memo.content LIKE ?", "%"+s+"%")
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}
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}
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if v := find.VisibilityList; len(v) != 0 {
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placeholders := make([]string, len(v))
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args := make([]any, len(v))
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for i, visibility := range v {
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placeholders[i] = "?"
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args[i] = visibility // Assuming visibility can be directly used as an argument
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}
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inClause := strings.Join(placeholders, ",")
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builder = builder.Where("memo.visibility IN ("+inClause+")", args...)
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}
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// Add order by clauses
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if find.OrderByPinned {
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builder = builder.OrderBy("pinned DESC")
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}
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if find.OrderByUpdatedTs {
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builder = builder.OrderBy("updated_ts DESC")
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} else {
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builder = builder.OrderBy("created_ts DESC")
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}
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builder = builder.OrderBy("id DESC")
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// Handle pagination
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if find.Limit != nil {
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builder = builder.Limit(uint64(*find.Limit))
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if find.Offset != nil {
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builder = builder.Offset(uint64(*find.Offset))
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}
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}
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// Prepare and execute the query
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query, args, err := builder.ToSql()
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if err != nil {
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return nil, err
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}
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rows, err := d.db.QueryContext(ctx, query, args...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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// Process the result set
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list := make([]*store.Memo, 0)
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updatedTsPlaceHolder, createdTsPlaceHolder := make([]uint8, 8), make([]uint8, 8)
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for rows.Next() {
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var memo store.Memo
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if err := rows.Scan(
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&memo.ID,
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&memo.CreatorID,
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&createdTsPlaceHolder,
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&updatedTsPlaceHolder,
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&memo.RowStatus,
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&memo.Content,
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&memo.Visibility,
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&memo.Pinned,
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); err != nil {
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return nil, err
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}
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// Convert the timestamps from Postgres to Go
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memo.CreatedTs = int64(binary.BigEndian.Uint64(createdTsPlaceHolder))
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memo.UpdatedTs = int64(binary.BigEndian.Uint64(updatedTsPlaceHolder))
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list = append(list, &memo)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return list, nil
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}
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func (d *DB) GetMemo(ctx context.Context, find *store.FindMemo) (*store.Memo, error) {
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list, err := d.ListMemos(ctx, find)
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if err != nil {
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return nil, err
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}
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if len(list) == 0 {
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return nil, nil
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}
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memo := list[0]
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return memo, nil
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}
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func (d *DB) UpdateMemo(ctx context.Context, update *store.UpdateMemo) error {
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// Start building the update statement
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builder := squirrel.Update("memo").
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PlaceholderFormat(squirrel.Dollar).
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Where("id = ?", update.ID)
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// Conditionally add set clauses
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if v := update.CreatedTs; v != nil {
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builder = builder.Set("created_ts", squirrel.Expr("to_timestamp(?)", *v))
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}
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if v := update.UpdatedTs; v != nil {
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builder = builder.Set("updated_ts", squirrel.Expr("to_timestamp(?)", *v))
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}
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if v := update.RowStatus; v != nil {
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builder = builder.Set("row_status", *v)
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}
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if v := update.Content; v != nil {
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builder = builder.Set("content", *v)
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}
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if v := update.Visibility; v != nil {
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builder = builder.Set("visibility", *v)
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}
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// Prepare and execute the query
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query, args, err := builder.ToSql()
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if err != nil {
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return err
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}
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if _, err := d.db.ExecContext(ctx, query, args...); err != nil {
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return err
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}
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return nil
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}
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func (d *DB) DeleteMemo(ctx context.Context, delete *store.DeleteMemo) error {
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// Start building the DELETE statement
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builder := squirrel.Delete("memo").
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PlaceholderFormat(squirrel.Dollar).
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Where(squirrel.Eq{"id": delete.ID})
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// Prepare the final query
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query, args, err := builder.ToSql()
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if err != nil {
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return err
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}
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// Execute the query with the context
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result, err := d.db.ExecContext(ctx, query, args...)
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if err != nil {
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return err
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}
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if _, err := result.RowsAffected(); err != nil {
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return err
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}
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// Perform any additional cleanup or operations such as vacuuming
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// irving: wait, why do we need to vacuum here?
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// I don't know why delete memo needs to vacuum. so I commented out.
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// REVIEWERS LOOK AT ME: please check this.
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return d.Vacuum(ctx)
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}
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func (d *DB) FindMemosVisibilityList(ctx context.Context, memoIDs []int32) ([]store.Visibility, error) {
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// Start building the SELECT statement
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builder := squirrel.Select("DISTINCT(visibility)").From("memo").
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PlaceholderFormat(squirrel.Dollar).
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Where(squirrel.Eq{"id": memoIDs})
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// Prepare the final query
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query, args, err := builder.ToSql()
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if err != nil {
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return nil, err
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}
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// Execute the query with the context
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rows, err := d.db.QueryContext(ctx, query, args...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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visibilityList := make([]store.Visibility, 0)
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for rows.Next() {
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var visibility store.Visibility
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if err := rows.Scan(&visibility); err != nil {
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return nil, err
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}
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visibilityList = append(visibilityList, visibility)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return visibilityList, nil
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}
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func vacuumMemo(ctx context.Context, tx *sql.Tx) error {
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// First, build the subquery
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subQuery, subArgs, err := squirrel.Select("id").From("user").PlaceholderFormat(squirrel.Dollar).ToSql()
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if err != nil {
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return err
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}
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// Now, build the main delete query using the subquery
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query, args, err := squirrel.Delete("memo").
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Where(fmt.Sprintf("creator_id NOT IN (%s)", subQuery), subArgs...).
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PlaceholderFormat(squirrel.Dollar).
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ToSql()
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if err != nil {
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return err
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}
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// Execute the query
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_, err = tx.ExecContext(ctx, query, args...)
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return err
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}
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