/**
 * Writing Session Manager
 * Tracks writing sessions, streaks, velocity, and motivation metrics
 */
import type { MCPClient } from '../core/database.js';
export interface WritingSession {
    id: number;
    projectId: number;
    sessionDate: string;
    startTime?: string;
    endTime?: string;
    wordsWritten: number;
    chaptersTouched?: number[];
    sessionType: 'drafting' | 'revising' | 'planning' | 'editing';
    notes?: string;
    moodBefore?: number;
    moodAfter?: number;
    createdAt: string;
}
export interface SessionSummary {
    totalSessions: number;
    totalWords: number;
    totalMinutes: number;
    averageWordsPerSession: number;
    averageWordsPerMinute: number;
    currentStreak: number;
    longestStreak: number;
    lastSessionDate?: string;
    sessionsThisWeek: number;
    sessionsThisMonth: number;
    wordsThisWeek: number;
    wordsThisMonth: number;
}
export interface SessionMetrics {
    sessionId: number;
    duration: number;
    wordsWritten: number;
    wordsPerMinute: number;
    chapterCount: number;
    moodChange?: number;
}
export interface Streak {
    current: number;
    longest: number;
    lastSessionDate?: string;
    streakStartDate?: string;
}
export declare class SessionManager {
    private mcpClient;
    private projectId;
    constructor(mcpClient: MCPClient, projectId: number);
    /**
     * Start a new writing session
     */
    startSession(options: {
        sessionType: WritingSession['sessionType'];
        moodBefore?: number;
        notes?: string;
    }): Promise<number>;
    /**
     * End current writing session
     */
    endSession(options: {
        moodAfter?: number;
        notes?: string;
        chaptersPath?: string;
    }): Promise<SessionMetrics>;
    /**
     * Get session summary statistics
     */
    getSummary(days?: number): Promise<SessionSummary>;
    /**
     * Calculate current and longest streaks
     */
    calculateStreak(): Promise<Streak>;
    /**
     * Get recent sessions
     */
    getRecentSessions(limit?: number): Promise<WritingSession[]>;
    /**
     * Calculate words written by checking chapter files modified since session start
     */
    private calculateWordsWritten;
    /**
     * Mark a session as having completed the pre-writing ritual checklist.
     *
     * Sets `ritual_completed = 1` on the session record identified by `sessionId`.
     *
     * @param sessionId - ID of the writing_sessions row to update.
     */
    markRitualCompleted(sessionId: number): Promise<void>;
    /**
     * Store the Pomodoro-style focus timer duration on a session.
     *
     * @param sessionId    - ID of the writing_sessions row to update.
     * @param timerMinutes - Timer duration in minutes.
     */
    setTimerMinutes(sessionId: number, timerMinutes: number): Promise<void>;
    /**
     * End a session by ID, optionally recording a stop note.
     *
     * This is the SPEC-06 variant that takes a session ID directly rather than
     * always looking up today's session.
     *
     * @param sessionId - ID of the writing_sessions row to close.
     * @param stopNote  - Optional "where I left off" note saved in stop_note.
     */
    endSessionById(sessionId: number, stopNote?: string): Promise<void>;
    /**
     * Return the most recent stop_note for this project, or null if none exists.
     */
    getLastStopNote(): Promise<string | null>;
    /**
     * Return the last `wordCount` words from the most recently modified chapter
     * file in `<projectPath>/chapters/`.
     *
     * @param projectPath - Root path of the novel project.
     * @param wordCount   - Number of words to return (default 200).
     */
    getLastChapterText(projectPath: string, wordCount?: number): Promise<string>;
    /**
     * Count words in text
     */
    private countWords;
    /**
     * Calculate duration in minutes
     */
    private calculateDuration;
    /**
     * Get today's date in YYYY-MM-DD format
     */
    private getTodayDate;
    /**
     * Get date N days ago in YYYY-MM-DD format
     */
    private getDateDaysAgo;
    /**
     * Add days to date string
     */
    private addDays;
}
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