// Code generated by sqlc. DO NOT EDIT.
// versions:
//   sqlc v1.31.1
// source: sessions.sql

package pgstore

import (
	"context"
	"time"
)

const createSession = `-- name: CreateSession :exec
insert into sessions (token_sha256, user_id, created_at, last_used_at, idle_expires_at, absolute_expires_at)
values ($1, $2, $3, $3,
        $4, $5)
`

type CreateSessionParams struct {
	TokenSha256       []byte
	UserID            string
	Now               time.Time
	IdleExpiresAt     time.Time
	AbsoluteExpiresAt time.Time
}

func (q *Queries) CreateSession(ctx context.Context, arg CreateSessionParams) error {
	_, err := q.db.Exec(ctx, createSession,
		arg.TokenSha256,
		arg.UserID,
		arg.Now,
		arg.IdleExpiresAt,
		arg.AbsoluteExpiresAt,
	)
	return err
}

const lookupSession = `-- name: LookupSession :one

select user_id, idle_expires_at, absolute_expires_at
  from sessions
 where token_sha256 = $1
   and revoked_at is null
   and idle_expires_at > $2
   and absolute_expires_at > $2
`

type LookupSessionParams struct {
	TokenSha256 []byte
	Now         time.Time
}

type LookupSessionRow struct {
	UserID            string
	IdleExpiresAt     time.Time
	AbsoluteExpiresAt time.Time
}

// Sessions. Parameters are NAMED with sqlc.arg rather than left as $n, so that the generated params
// struct carries field names: two adjacent time.Time arguments at a call site are exactly the shape
// that transposes silently, and a named field is the cheapest defence against it.
// Expiry and revocation are clauses of THIS query, not checks a caller could forget: a row that
// comes back is live by construction.
func (q *Queries) LookupSession(ctx context.Context, arg LookupSessionParams) (LookupSessionRow, error) {
	row := q.db.QueryRow(ctx, lookupSession, arg.TokenSha256, arg.Now)
	var i LookupSessionRow
	err := row.Scan(&i.UserID, &i.IdleExpiresAt, &i.AbsoluteExpiresAt)
	return i, err
}

const revokeSession = `-- name: RevokeSession :exec
update sessions set revoked_at = $1::timestamptz
 where token_sha256 = $2 and revoked_at is null
`

type RevokeSessionParams struct {
	Now         time.Time
	TokenSha256 []byte
}

// The cast is not decoration: revoked_at is NULLABLE, so without it sqlc types the parameter from
// the column and hands the caller a *time.Time for a value that is never absent.
func (q *Queries) RevokeSession(ctx context.Context, arg RevokeSessionParams) error {
	_, err := q.db.Exec(ctx, revokeSession, arg.Now, arg.TokenSha256)
	return err
}

const sessionStillLive = `-- name: SessionStillLive :one
select 1
  from sessions
 where token_sha256 = $1
   and revoked_at is null
   and absolute_expires_at > $2
`

type SessionStillLiveParams struct {
	TokenSha256 []byte
	Now         time.Time
}

// ⚠ THE IDLE CLAUSE IS DELIBERATELY ABSENT. The idle window slides on a REQUEST, and the event
// stream is ONE request that lives for hours, so a stream cannot slide its own window and asking the
// idle question here would end the stream of a user who is sitting and watching it.
func (q *Queries) SessionStillLive(ctx context.Context, arg SessionStillLiveParams) (int32, error) {
	row := q.db.QueryRow(ctx, sessionStillLive, arg.TokenSha256, arg.Now)
	var column_1 int32
	err := row.Scan(&column_1)
	return column_1, err
}

const sweepSessions = `-- name: SweepSessions :execrows
delete from sessions
 where absolute_expires_at <= $1
    or idle_expires_at <= $1
    or revoked_at is not null
`

// Deletes rows nothing can authenticate with again: past either expiry, or revoked. A revoked row is
// the one a compromised account most wants gone. The audit lives in the login journal, not here.
func (q *Queries) SweepSessions(ctx context.Context, now time.Time) (int64, error) {
	result, err := q.db.Exec(ctx, sweepSessions, now)
	if err != nil {
		return 0, err
	}
	return result.RowsAffected(), nil
}

const touchSession = `-- name: TouchSession :exec
update sessions
   set last_used_at = $1,
       idle_expires_at = least($2::timestamptz, absolute_expires_at)
 where token_sha256 = $3
   and revoked_at is null
   and idle_expires_at > $1
   and absolute_expires_at > $1
`

type TouchSessionParams struct {
	Now          time.Time
	IdleDeadline time.Time
	TokenSha256  []byte
}

// Slides the idle window and never moves the absolute expiry — that is the point of having two
// clocks. Its WHERE matches LookupSession's, idle clause included (PD-4).
func (q *Queries) TouchSession(ctx context.Context, arg TouchSessionParams) error {
	_, err := q.db.Exec(ctx, touchSession, arg.Now, arg.IdleDeadline, arg.TokenSha256)
	return err
}