package com.hlab.yanalyst.domain.channel;

import jakarta.persistence.*;
import lombok.AccessLevel;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;
import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;

import java.time.LocalDateTime;

@Entity
@Table(name = "youtube_channels")
@Getter
@NoArgsConstructor(access = AccessLevel.PROTECTED)
@EntityListeners(AuditingEntityListener.class)
public class Channel {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(nullable = false, unique = true)
    private String channelId; // YouTube Channel ID

    @Column(nullable = false)
    private String title;

    @Column(columnDefinition = "TEXT")
    private String description;

    @Column(length = 2083)
    private String thumbnailUrl;

    private Long subscriberCount;

    private Long viewCount;

    private Long videoCount;

    @Column(name = "uploads_playlist_id")
    private String uploadsPlaylistId;

    @Column(length = 8)
    private String country; // YouTube snippet.country (ISO-3166 alpha-2, 예: KR/JP/US). 없으면 null

    /**
     * 채널 역할: MY(내 채널) / SOURCE(소재 원본 웹예능) / RIVAL(경쟁 쇼츠).
     * ddl-auto:update 특성상 기존 행은 null 이므로 조회 시 null 은 MY 로 간주한다({@link ChannelRole#normalize}).
     */
    @Column(length = 10)
    private String role = ChannelRole.MY;

    /**
     * 피드 수집 연속 실패 횟수. 3회 이상이면 자동 스킵해 쿼터 낭비를 막는다.
     * 성공하면 0으로 리셋된다.
     */
    @Column(name = "feed_fail_count")
    private Integer feedFailCount = 0;

    private LocalDateTime publishedAt;

    @CreatedDate
    @Column(updatable = false)
    private LocalDateTime createdAt;

    @LastModifiedDate
    private LocalDateTime updatedAt;

    @Builder
    public Channel(String channelId, String title, String description, String thumbnailUrl, Long subscriberCount, Long viewCount, Long videoCount, LocalDateTime publishedAt, String uploadsPlaylistId) {
        this.channelId = channelId;
        this.title = title;
        this.description = description;
        this.thumbnailUrl = thumbnailUrl;
        this.subscriberCount = subscriberCount;
        this.viewCount = viewCount;
        this.videoCount = videoCount;
        this.publishedAt = publishedAt;
        this.uploadsPlaylistId = uploadsPlaylistId;
    }

    public void update(String title, String description, String thumbnailUrl, Long subscriberCount, Long viewCount, Long videoCount) {
        this.title = title;
        this.description = description;
        this.thumbnailUrl = thumbnailUrl;
        this.subscriberCount = subscriberCount;
        this.viewCount = viewCount;
        this.videoCount = videoCount;
    }

    public void setUploadsPlaylistId(String uploadsPlaylistId) {
        this.uploadsPlaylistId = uploadsPlaylistId;
    }

    public void setCountry(String country) {
        this.country = country;
    }

    /** 역할 변경. null/미인식 값은 MY 로 보정된다. */
    public void changeRole(String role) {
        this.role = ChannelRole.normalize(role);
    }

    /** null 을 MY 로 보정한 실제 역할. */
    public String roleOrDefault() {
        return ChannelRole.normalize(this.role);
    }

    public int feedFailCountOrZero() {
        return this.feedFailCount == null ? 0 : this.feedFailCount;
    }

    /** 피드 수집 실패 누적. */
    public void recordFeedFailure() {
        this.feedFailCount = feedFailCountOrZero() + 1;
    }

    /** 피드 수집 성공 — 실패 카운터 리셋. */
    public void resetFeedFailure() {
        this.feedFailCount = 0;
    }

    /** 연속 실패로 자동 비활성화된 상태인지. */
    public boolean isFeedDisabled() {
        return feedFailCountOrZero() >= 3;
    }
}