types.ts

export interface MedicineInfo {
    brandName: string;
    composition: string;
    uses: string;
    dosage: string;
    sideEffects: string;
    warnings: string;
    otcOrPrescription: string;
    manufacturer: string;
    rawResponse: string;
    imageUrl?: string;
}

export interface AgeBasedInfo {
    age: number;
    ageGroup: 'Child' | 'Adult' | 'Senior' | 'Unknown';
    dosage: string;
    timings: string;
    sideEffects: string;
    warnings: string;
}

export interface ComparisonItem extends AgeBasedInfo {
    id: string;
}

export interface Language {
    code: string;
    name: string;
}

export type InputMode = 'image' | 'text';

export type NavigationView = 'input' | 'scan' | 'history' | 'ageGuide' | 'symptoms';

export interface HistoryItem extends MedicineInfo {
  id: string;
  timestamp: number;
}

export interface SymptomAnalysis {
    urgency: 'Low' | 'Moderate' | 'High' | 'Emergency';
    possibleConditions: string;
    suggestedCare: string;
    suggestedMedications: string;
    rootCauses: string;
    preventiveMeasures: string;
    alternativePossibilities: string;
}

export interface SymptomHistoryItem extends SymptomAnalysis {
    id: string;
    timestamp: number;
    inputSummary: string; // e.g., "Image Analysis" or the first 50 chars of text
}


// Medicine History
export const loadHistory = (): HistoryItem[] => {
    try {
        const historyJson = localStorage.getItem('mediscan_history');
        if (!historyJson) return [];
        const history = JSON.parse(historyJson) as HistoryItem[];
        return history.sort((a, b) => b.timestamp - a.timestamp);
    } catch (error) {
        console.error("Failed to load medicine history from localStorage", error);
        return [];
    }
};

export const addHistoryItem = (item: HistoryItem): HistoryItem[] => {
    const history = loadHistory();
    const updatedHistory = [item, ...history];
    localStorage.setItem('mediscan_history', JSON.stringify(updatedHistory));
    return updatedHistory;
};

export const deleteHistoryItem = (id: string): HistoryItem[] => {
    const history = loadHistory();
    const updatedHistory = history.filter(item => item.id !== id);
    localStorage.setItem('mediscan_history', JSON.stringify(updatedHistory));
    return updatedHistory;
};

export const clearHistory = (): void => {
    try {
        localStorage.removeItem('mediscan_history');
    } catch (error) {
        console.error("Failed to clear medicine history from localStorage", error);
    }
};


// Symptom History
export const loadSymptomHistory = (): SymptomHistoryItem[] => {
    try {
        const historyJson = localStorage.getItem('symptom_history');
        if (!historyJson) return [];
        const history = JSON.parse(historyJson) as SymptomHistoryItem[];
        return history.sort((a, b) => b.timestamp - a.timestamp);
    } catch (error) {
        console.error("Failed to load symptom history from localStorage", error);
        return [];
    }
};

export const addSymptomHistoryItem = (item: SymptomHistoryItem): SymptomHistoryItem[] => {
    const history = loadSymptomHistory();
    const updatedHistory = [item, ...history];
    localStorage.setItem('symptom_history', JSON.stringify(updatedHistory));
    return updatedHistory;
};

export const deleteSymptomHistoryItem = (id: string): SymptomHistoryItem[] => {
    const history = loadSymptomHistory();
    const updatedHistory = history.filter(item => item.id !== id);
    localStorage.setItem('symptom_history', JSON.stringify(updatedHistory));
    return updatedHistory;
};

export const clearSymptomHistory = (): void => {
    try {
        localStorage.removeItem('symptom_history');
    } catch (error) {
        console.error("Failed to clear symptom history from localStorage", error);
    }
};