// Demo mode data persistence using localStorage
// This provides a more robust storage solution for demo mode without Firebase

export interface DemoUser {
    uid: string;
    email: string;
    displayName: string;
    passwordHash: string; // Simple hash for demo purposes
}

export interface DemoOrganization {
    orgId: string;
    name: string;
    onboardingCompleted: boolean;
    [key: string]: any; // Additional org data from onboarding
}

export interface DemoEmployee {
    id: string;
    name: string;
    email: string;
    role?: string;
    department?: string;
    orgId: string;
}

export interface DemoSubmission {
    employeeId: string;
    orgId: string;
    answers: Record<string, string>;
    createdAt: number;
}

export interface DemoInvite {
    code: string;
    employee: DemoEmployee;
    used: boolean;
    createdAt: number;
    orgId: string;
}

class DemoStorageService {
    private getKey(key: string): string {
        return `auditly_demo_${key}`;
    }

    // User management
    saveUser(user: DemoUser): void {
        const users = this.getUsers();
        users[user.email] = user;
        localStorage.setItem(this.getKey('users'), JSON.stringify(users));
    }

    getUsers(): Record<string, DemoUser> {
        const data = localStorage.getItem(this.getKey('users'));
        return data ? JSON.parse(data) : {};
    }

    getUserByEmail(email: string): DemoUser | null {
        const users = this.getUsers();
        return users[email] || null;
    }

    getUserByUid(uid: string): DemoUser | null {
        const users = this.getUsers();
        return Object.values(users).find(user => user.uid === uid) || null;
    }

    // Simple password hashing for demo (not secure, just for demo purposes)
    hashPassword(password: string): string {
        return btoa(password).split('').reverse().join('');
    }

    verifyPassword(password: string, hash: string): boolean {
        return this.hashPassword(password) === hash;
    }

    // Organization management
    saveOrganization(org: DemoOrganization): void {
        const orgs = this.getOrganizations();
        orgs[org.orgId] = org;
        localStorage.setItem(this.getKey('organizations'), JSON.stringify(orgs));
    }

    getOrganizations(): Record<string, DemoOrganization> {
        const data = localStorage.getItem(this.getKey('organizations'));
        return data ? JSON.parse(data) : {};
    }

    getOrganization(orgId: string): DemoOrganization | null {
        const orgs = this.getOrganizations();
        return orgs[orgId] || null;
    }

    // Employee management
    saveEmployee(employee: DemoEmployee): void {
        const employees = this.getEmployees();
        const key = `${employee.orgId}_${employee.id}`;
        employees[key] = employee;
        localStorage.setItem(this.getKey('employees'), JSON.stringify(employees));
    }

    getEmployees(): Record<string, DemoEmployee> {
        const data = localStorage.getItem(this.getKey('employees'));
        return data ? JSON.parse(data) : {};
    }

    getEmployeesByOrg(orgId: string): DemoEmployee[] {
        const employees = this.getEmployees();
        return Object.values(employees).filter(emp => emp.orgId === orgId);
    }

    // Submission management
    saveSubmission(submission: DemoSubmission): void {
        const submissions = this.getSubmissions();
        const key = `${submission.orgId}_${submission.employeeId}`;
        submissions[key] = submission;
        localStorage.setItem(this.getKey('submissions'), JSON.stringify(submissions));
    }

    getSubmissions(): Record<string, DemoSubmission> {
        const data = localStorage.getItem(this.getKey('submissions'));
        return data ? JSON.parse(data) : {};
    }

    getSubmissionsByOrg(orgId: string): Record<string, DemoSubmission> {
        const submissions = this.getSubmissions();
        const result: Record<string, DemoSubmission> = {};
        Object.entries(submissions).forEach(([key, sub]) => {
            if (sub.orgId === orgId) {
                result[sub.employeeId] = sub;
            }
        });
        return result;
    }

    // Invite management
    saveInvite(invite: DemoInvite): void {
        const invites = this.getInvites();
        invites[invite.code] = invite;
        localStorage.setItem(this.getKey('invites'), JSON.stringify(invites));
    }

    getInvites(): Record<string, DemoInvite> {
        const data = localStorage.getItem(this.getKey('invites'));
        return data ? JSON.parse(data) : {};
    }

    getInvite(code: string): DemoInvite | null {
        const invites = this.getInvites();
        return invites[code] || null;
    }

    markInviteUsed(code: string): boolean {
        const invite = this.getInvite(code);
        if (invite && !invite.used) {
            invite.used = true;
            this.saveInvite(invite);
            return true;
        }
        return false;
    }

    // Company reports (simple storage)
    saveCompanyReport(orgId: string, report: any): void {
        const reports = this.getCompanyReports();
        if (!reports[orgId]) reports[orgId] = [];
        reports[orgId].push(report);
        localStorage.setItem(this.getKey('company_reports'), JSON.stringify(reports));
    }

    getCompanyReports(): Record<string, any[]> {
        const data = localStorage.getItem(this.getKey('company_reports'));
        return data ? JSON.parse(data) : {};
    }

    getCompanyReportsByOrg(orgId: string): any[] {
        const reports = this.getCompanyReports();
        return reports[orgId] || [];
    }

    // Employee reports
    saveEmployeeReport(orgId: string, employeeId: string, report: any): void {
        const reports = this.getEmployeeReports();
        const key = `${orgId}_${employeeId}`;
        reports[key] = report;
        localStorage.setItem(this.getKey('employee_reports'), JSON.stringify(reports));
    }

    getEmployeeReports(): Record<string, any> {
        const data = localStorage.getItem(this.getKey('employee_reports'));
        return data ? JSON.parse(data) : {};
    }

    getEmployeeReportsByOrg(orgId: string): Record<string, any> {
        const reports = this.getEmployeeReports();
        const result: Record<string, any> = {};
        Object.entries(reports).forEach(([key, report]) => {
            if (key.startsWith(`${orgId}_`)) {
                const employeeId = key.substring(orgId.length + 1);
                result[employeeId] = report;
            }
        });
        return result;
    }

    // Clear all demo data (for testing)
    clearAllData(): void {
        const keys = [
            'users', 'organizations', 'employees', 'submissions',
            'invites', 'company_reports', 'employee_reports'
        ];
        keys.forEach(key => {
            localStorage.removeItem(this.getKey(key));
        });
    }
}

export const demoStorage = new DemoStorageService();