import type { S3Config } from "../../types.ts";
export declare function s3Key(name: string, s3: S3Config): string;
export interface BackupEntry {
    name: string;
    path: string;
    size: number;
    createdAt: Date;
    type: "backup" | "upload" | "original";
    source: "local" | "s3";
}
export declare function createBackup(dbPath: string, storageDir: string): string;
export declare function listBackups(storageDir: string): BackupEntry[];
export declare function saveUploadedDb(storageDir: string, filename: string, data: Buffer): void;
export declare function deleteBackup(storageDir: string, name: string): void;
export interface CameraState {
    x: number;
    y: number;
    z: number;
}
export interface OriginalDbSettings {
    hiddenColumns?: Record<string, string[]>;
    camera?: CameraState;
    tablePositions?: Record<string, {
        x: number;
        y: number;
    }>;
}
export interface BackupDbSettings {
    database: string;
}
export type DbEntry = OriginalDbSettings | BackupDbSettings;
export interface Settings {
    activeDatabase?: string;
    databases?: Record<string, DbEntry>;
    lastAutoBackup?: string;
}
export declare function readSettings(storageDir: string): Settings;
export declare function writeSettings(storageDir: string, data: Settings): void;
export declare function restoreBackup(dbPath: string, storageDir: string, backupName: string, backup?: boolean): string | null;
/** If dbName is a backup, return the original's name; otherwise return dbName. */
export declare function resolveOriginalName(settings: Settings, dbName: string): string;
/** Get the hidden column names for a table, resolving through backup → original. */
export declare function getHiddenColumns(settings: Settings, dbName: string, tableName: string): string[];
/** Return updated Settings with the hidden columns set for the given table on the original. */
export declare function setHiddenColumns(settings: Settings, dbName: string, tableName: string, hidden: string[]): Settings;
/** Get the saved camera state for the given db, resolving through backup → original. */
export declare function getCameraState(settings: Settings, dbName: string): CameraState | undefined;
/** Return updated Settings with the camera state set for the given db's original. */
export declare function setCameraState(settings: Settings, dbName: string, camera: CameraState): Settings;
/** Get the saved table positions for the given db, resolving through backup → original. */
export declare function getTablePositions(settings: Settings, dbName: string): Record<string, {
    x: number;
    y: number;
}>;
/** Return updated Settings with one table's position set for the given db's original. */
export declare function setTablePosition(settings: Settings, dbName: string, tableName: string, position: {
    x: number;
    y: number;
}): Settings;
export declare function uploadToS3(filePath: string, s3: S3Config): Promise<string>;
export declare function deleteFromS3(key: string, s3: S3Config): Promise<void>;
export declare function getFromS3(key: string, s3: S3Config): Promise<Buffer>;
export declare function listS3Backups(s3: S3Config): Promise<BackupEntry[]>;
export declare function createBackupToS3(dbPath: string, s3: S3Config): Promise<string>;
/** Return updated Settings registering a backup as pointing to its original. */
export declare function registerBackup(settings: Settings, backupName: string, originalName: string): Settings;
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