/**
 * sessionStore — localStorage-based session DB for the Pathora colposcopy assistant.
 * Every examination page writes here; ReportPage reads the full record for AI generation.
 *
 * Data schema:
 *   patientInfo      — registry id, name, exam date
 *   patientHistory   — PatientHistoryForm (demographics, symptoms, screening, risks)
 *   nativeFindings   — ImagingObservations for the native (untreated) step
 *   aceticFindings   — AceticFindingsForm category+feature checkboxes for the acetic acid step
 *   stepFindings     — generic per-step observations bucket (kept for backwards compat)
 *   biopsyMarkings   — lesion marks with clock hours + Swede score from BiopsyMarking
 *   reportFormData   — all free-text / select fields on ReportPage
 *   sessionStarted   — ISO timestamp
 */

// ── Patient history form (PatientHistoryForm.tsx) ─────────────────────────────
export interface PatientHistory {
    name: string;
    age: string;
    bloodGroup: string;
    parity: string;
    pregnancyStatus: string;
    gestationalAgeWeeks: string;
    monthsSinceLastDelivery: string;
    monthsSinceAbortion: string;
    menstrualStatus: string;
    sexualHistory: string;
    hpvStatus: string;
    hpvVaccination: string;
    patientProfileNotes: string;
    postCoitalBleeding: boolean;
    interMenstrualBleeding: boolean;
    persistentDischarge: boolean;
    symptomsNotes: string;
    papSmearResult: string;
    hpvDnaTypes: string;
    pastProcedures: { biopsy: boolean; leep: boolean; cryotherapy: boolean; none: boolean };
    screeningNotes: string;
    smoking: string;
    immunosuppression: { hiv: boolean; steroids: boolean; none: boolean };
    riskFactorsNotes: string;
}

// ── Native step visual observations (ImagingObservations.tsx, native layout) ──
export interface NativeFindings {
    cervixFullyVisible: 'Yes' | 'No' | null;
    obscuredBy: { blood: boolean; inflammation: boolean; discharge: boolean; scarring: boolean };
    adequacyNotes: string;
    scjVisibility: string;
    scjNotes: string;
    tzType: string;
    suspiciousAtNativeView: boolean;
    obviousGrowths: boolean;
    contactBleeding: boolean;
    irregularSurface: boolean;
    other: boolean;
    additionalNotes: string;
}

// ── Acetic acid clinical findings (AceticFindingsForm.tsx) ────────────────────
export interface AceticFindings {
    /** Top-level categories that were checked */
    selectedCategories: Record<string, boolean>;
    /** Individual features within each category that were checked */
    selectedFindings: Record<string, boolean>;
    additionalNotes: string;
}

// ── Biopsy marking (BiopsyMarking.tsx) ────────────────────────────────────────
export interface BiopsyMarkings {
    lesionMarks: Array<{ type: string; typeCode: string; clockHour: number; color: string }>;
    swedeScores: {
        acetoUptake: number | null;
        marginsAndSurface: number | null;
        vessels: number | null;
        lesionSize: number | null;
        iodineStaining: number | null;
    };
    totalSwedeScore: number;
    marksByType: Record<string, { type: string; hours: number[] }>;
}

// ── Full session record ────────────────────────────────────────────────────────
export interface PatientSession {
    /** Basic registry info set when a patient is selected */
    patientInfo?: { id: string; name: string; examDate?: string };
    /** Full patient history / intake form */
    patientHistory?: Partial<PatientHistory>;
    /** Native (untreated) examination visual observations */
    nativeFindings?: Partial<NativeFindings>;
    /** Acetic acid clinical findings checkboxes */
    aceticFindings?: Partial<AceticFindings>;
    /** Generic per-step observation bucket (backwards compat / future steps) */
    stepFindings?: Record<string, any>;
    /** Lesion marks and Swede score from BiopsyMarking */
    biopsyMarkings?: BiopsyMarkings;
    /** All text/select fields from the ReportPage form */
    reportFormData?: Record<string, string>;
    /** ISO timestamp when this session was started */
    sessionStarted?: string;
}

const KEY = 'pathora_colpo_session';

export const sessionStore = {
    /** Read the full session from localStorage. Returns {} on error. */
    get(): PatientSession {
        try {
            return JSON.parse(localStorage.getItem(KEY) ?? '{}') as PatientSession;
        } catch {
            return {};
        }
    },

    /** Shallow-merge a partial update into the stored session. */
    merge(partial: Partial<PatientSession>): void {
        const current = sessionStore.get();
        localStorage.setItem(KEY, JSON.stringify({ ...current, ...partial }));
    },

    /** Wipe the session (call when starting a new patient). */
    clear(): void {
        localStorage.removeItem(KEY);
    },

    /** Return the full session as pretty-printed JSON (for download / debugging). */
    export(): string {
        return JSON.stringify(sessionStore.get(), null, 2);
    },
};