package com.voidsoftware.map02.entities;

import com.voidsoftware.map02.models.Gender;
import com.voidsoftware.map02.models.MediaEntity;
import jakarta.persistence.*;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.time.Instant;
import java.time.LocalDate;
import java.util.UUID;

@Entity
@Table(name = "patient", indexes = {
        @Index(name = "idx_patient_email", columnList = "email", unique = true),
        @Index(name = "idx_patient_professional_id", columnList = "professional_id"),
        @Index(name = "idx_patient_user_id", columnList = "user_id"),
        // Directory pagination order, not case-insensitive substring filtering.
        @Index(name = "idx_patient_name_id", columnList = "name, id")
})
@Data
@NoArgsConstructor
public class Patient implements MediaEntity {

    @Id
    @GeneratedValue(strategy = GenerationType.UUID)
    @Column(name = "id", nullable = false, updatable = false, columnDefinition = "uuid")
    private UUID id;

    /**
     * Full name of the patient.
     */
    @Column(nullable = false)
    private String name;

    /**
     * Date of birth, used to calculate age and check paediatric dosing rules.
     */
    @Column(name = "date_of_birth")
    private LocalDate dateOfBirth;

    /**
     * IANA timezone (e.g. Europe/Lisbon) used to convert scheduled UTC times to local display times.
     */
    @Column(nullable = false)
    private String timezone;

    /**
     * Soft-delete flag; inactive patients are excluded from dose generation and alerts.
     */
    @Column(nullable = false)
    private Boolean active = true;

    /**
     * Contact e-mail, also used as login identifier if the patient has an app account.
     */
    // Uniqueness is already declared by idx_patient_email on the table.
    @Column
    private String email;

    /**
     * Mobile number for SMS notification delivery.
     */
    @Column(name = "phone_number")
    private String phoneNumber;

    /**
     * MALE, FEMALE, OTHER
     */
    @Enumerated(EnumType.STRING)
    @Column(name = "gender")
    private Gender gender;

    /**
     * Residential address, used for home-delivery or home-visit workflows.
     */
    @Column
    private String address;

    /**
     * ABO/Rh blood type (e.g. A+), relevant for clinical decision support.
     */
    @Column(name = "blood_type", length = 5)
    private String bloodType;

    /**
     * Name of the person to contact in a medical emergency.
     */
    @Column(name = "emergency_contact_name")
    private String emergencyContactName;

    /**
     * Phone number of the emergency contact.
     */
    @Column(name = "emergency_contact_phone")
    private String emergencyContactPhone;

    /**
     * Free-text clinical notes visible only to the assigned professional.
     */
    @Column(columnDefinition = "text")
    private String notes;

    /**
     * Professional responsible for this patient's care.
     */
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "professional_id")
    private Professional professional;

    @Column(name = "created_at", nullable = false, updatable = false)
    private Instant createdAt;

    @Column(name = "updated_at", nullable = false)
    private Instant updatedAt;


    @Column(name = "user_id", columnDefinition = "uuid")
    private UUID userId;


    @Column(columnDefinition = "uuid")
    private UUID resourceId;

    @PrePersist
    public void prePersist() {
        Instant now = Instant.now();
        this.createdAt = now;
        this.updatedAt = now;
    }

    @PreUpdate
    public void preUpdate() {
        this.updatedAt = Instant.now();
    }
}