import type { ExtensionContext } from "@earendil-works/pi-coding-agent";
import { type GoalState } from "./goal-contract.ts";
export declare const LEGACY_MIGRATION_ENTRY = "pi-goal-todo-migration-v1";
export declare const LEGACY_MIGRATION_EVENT = "pi-goal-todo:migrated";
export declare const TODO_STATE_ENTRY = "pi-todo-state-v1";
interface LegacyTask {
    id: string;
    title: string;
    status: "pending" | "complete" | "skipped";
    verificationContract?: string;
    subtasks?: LegacyTask[];
}
export interface LegacyGoalCandidate {
    id: string;
    objective: string;
    status: "active" | "paused" | "complete";
    autoContinue: boolean;
    createdAt: string;
    updatedAt: string;
    pauseReason?: string;
    pauseSuggestedAction?: string;
    tasks: LegacyTask[];
    source: "session" | "file";
}
export interface LegacyTodoState {
    schemaVersion: 1;
    revision: number;
    tasks: Array<{
        key: string;
        subject: string;
        description?: string;
        status: "pending" | "completed";
        dependsOn?: string[];
    }>;
}
export type LegacyMigrationPlan = {
    kind: "none";
} | {
    kind: "ambiguous";
    candidates: LegacyGoalCandidate[];
} | {
    kind: "migrate";
    candidate: LegacyGoalCandidate;
    goal: GoalState;
    todo: LegacyTodoState | null;
};
export declare function findLegacyGoalCandidates(ctx: ExtensionContext): {
    focusedId: string | null;
    candidates: LegacyGoalCandidate[];
};
export declare function migrateLegacyTasks(tasks: readonly LegacyTask[]): LegacyTodoState | null;
export declare function planLegacyMigration(ctx: ExtensionContext, selectedGoalId?: string): LegacyMigrationPlan;
export declare function writeLegacyMigration(pi: {
    appendEntry: (type: string, data: unknown) => void;
    events: {
        emit: (channel: string, data: unknown) => void;
    };
}, plan: Extract<LegacyMigrationPlan, {
    kind: "migrate";
}>): void;
export {};