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

package db

import (
	"context"

	"github.com/jackc/pgx/v5/pgtype"
)

const deleteIssueReadCursorsByIssue = `-- name: DeleteIssueReadCursorsByIssue :exec
DELETE FROM issue_read_cursor
WHERE issue_id = $1::uuid
  AND workspace_id = $2::uuid
`

type DeleteIssueReadCursorsByIssueParams struct {
	IssueID     pgtype.UUID `json:"issue_id"`
	WorkspaceID pgtype.UUID `json:"workspace_id"`
}

// No foreign keys by project rule, so issue deletion cleans up here.
func (q *Queries) DeleteIssueReadCursorsByIssue(ctx context.Context, arg DeleteIssueReadCursorsByIssueParams) error {
	_, err := q.db.Exec(ctx, deleteIssueReadCursorsByIssue, arg.IssueID, arg.WorkspaceID)
	return err
}

const deleteIssueReadCursorsByUserWorkspace = `-- name: DeleteIssueReadCursorsByUserWorkspace :exec
DELETE FROM issue_read_cursor
WHERE user_id = $1::uuid
  AND workspace_id = $2::uuid
`

type DeleteIssueReadCursorsByUserWorkspaceParams struct {
	UserID      pgtype.UUID `json:"user_id"`
	WorkspaceID pgtype.UUID `json:"workspace_id"`
}

// A departing member's cursors, in the same tx as the member-row delete.
func (q *Queries) DeleteIssueReadCursorsByUserWorkspace(ctx context.Context, arg DeleteIssueReadCursorsByUserWorkspaceParams) error {
	_, err := q.db.Exec(ctx, deleteIssueReadCursorsByUserWorkspace, arg.UserID, arg.WorkspaceID)
	return err
}

const deleteIssueReadCursorsForWorkspace = `-- name: DeleteIssueReadCursorsForWorkspace :exec
DELETE FROM issue_read_cursor WHERE workspace_id = $1::uuid
`

// No foreign keys by project rule, so workspace teardown cleans up here.
func (q *Queries) DeleteIssueReadCursorsForWorkspace(ctx context.Context, workspaceID pgtype.UUID) error {
	_, err := q.db.Exec(ctx, deleteIssueReadCursorsForWorkspace, workspaceID)
	return err
}

const listIssueReadCursors = `-- name: ListIssueReadCursors :many
SELECT issue_id, last_read_at
FROM issue_read_cursor
WHERE user_id = $1::uuid
  AND workspace_id = $2::uuid
  AND issue_id = ANY($3::uuid[])
`

type ListIssueReadCursorsParams struct {
	UserID      pgtype.UUID   `json:"user_id"`
	WorkspaceID pgtype.UUID   `json:"workspace_id"`
	IssueIds    []pgtype.UUID `json:"issue_ids"`
}

type ListIssueReadCursorsRow struct {
	IssueID    pgtype.UUID        `json:"issue_id"`
	LastReadAt pgtype.Timestamptz `json:"last_read_at"`
}

// The caller's cursors for a batch of issues, scoped to the workspace. Issues
// the user never opened have no row.
func (q *Queries) ListIssueReadCursors(ctx context.Context, arg ListIssueReadCursorsParams) ([]ListIssueReadCursorsRow, error) {
	rows, err := q.db.Query(ctx, listIssueReadCursors, arg.UserID, arg.WorkspaceID, arg.IssueIds)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	items := []ListIssueReadCursorsRow{}
	for rows.Next() {
		var i ListIssueReadCursorsRow
		if err := rows.Scan(&i.IssueID, &i.LastReadAt); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const upsertIssueReadCursor = `-- name: UpsertIssueReadCursor :exec
INSERT INTO issue_read_cursor (user_id, issue_id, workspace_id, last_read_at)
VALUES (
    $1::uuid,
    $2::uuid,
    $3::uuid,
    COALESCE($4::timestamptz, now())
)
ON CONFLICT (user_id, issue_id) DO UPDATE
SET last_read_at = GREATEST(issue_read_cursor.last_read_at, EXCLUDED.last_read_at)
`

type UpsertIssueReadCursorParams struct {
	UserID      pgtype.UUID        `json:"user_id"`
	IssueID     pgtype.UUID        `json:"issue_id"`
	WorkspaceID pgtype.UUID        `json:"workspace_id"`
	LastReadAt  pgtype.Timestamptz `json:"last_read_at"`
}

// Monotonic: GREATEST keeps the newest value, so a late or replayed request
// never moves a cursor backwards and re-marking an issue as read is a no-op.
// A NULL last_read_at means "now" on the database clock, the same clock that
// stamps comment.created_at, so API/DB clock skew cannot leave a just-read
// issue looking unread.
func (q *Queries) UpsertIssueReadCursor(ctx context.Context, arg UpsertIssueReadCursorParams) error {
	_, err := q.db.Exec(ctx, upsertIssueReadCursor,
		arg.UserID,
		arg.IssueID,
		arg.WorkspaceID,
		arg.LastReadAt,
	)
	return err
}