package com.dalab.policyengine.model;

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

import org.hibernate.annotations.JdbcTypeCode;
import org.hibernate.type.SqlTypes;

import jakarta.persistence.*;
import jakarta.validation.constraints.NotBlank;
import jakarta.validation.constraints.Size;

@Entity
@Table(name = "policy_rules")
public class PolicyRule {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(columnDefinition = "UUID")
    private UUID id;

    @NotBlank
    @Size(max = 255)
    @Column(nullable = false)
    private String name; // A unique name for the rule within the policy, e.g., "rule1", "checkPII"

    @Size(max = 1000)
    private String description;

    @NotBlank
    @Column(nullable = false, columnDefinition = "TEXT")
    private String condition; // MVEL expression, e.g., "asset.assetType == 'S3_BUCKET' && asset.tags.contains('PII')"

    // Rules with lower numbers have higher priority
    @Column(nullable = false)
    private int priority = 1;

    // Optional: Actions specific to this rule, if different from policy-level actions or to augment them
    @JdbcTypeCode(SqlTypes.JSON)
    @Column(columnDefinition = "jsonb")
    private Map<String, Object> actions;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "policy_id", nullable = false)
    private Policy policy;

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

    private Instant updatedAt;

    // Getters and Setters

    public UUID getId() {
        return id;
    }

    public void setId(UUID id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getCondition() {
        return condition;
    }

    public void setCondition(String condition) {
        this.condition = condition;
    }

    public int getPriority() {
        return priority;
    }

    public void setPriority(int priority) {
        this.priority = priority;
    }

    public Map<String, Object> getActions() {
        return actions;
    }

    public void setActions(Map<String, Object> actions) {
        this.actions = actions;
    }

    public Policy getPolicy() {
        return policy;
    }

    public void setPolicy(Policy policy) {
        this.policy = policy;
    }

    public Instant getCreatedAt() {
        return createdAt;
    }

    public void setCreatedAt(Instant createdAt) {
        this.createdAt = createdAt;
    }

    public Instant getUpdatedAt() {
        return updatedAt;
    }

    public void setUpdatedAt(Instant updatedAt) {
        this.updatedAt = updatedAt;
    }

    @PrePersist
    protected void onCreate() {
        createdAt = Instant.now();
        updatedAt = Instant.now();
    }

    @PreUpdate
    protected void onUpdate() {
        updatedAt = Instant.now();
    }
}