/*
 * Copyright 2013 Jesse Morgan
 */

package com.p4square.grow.model;

import java.util.HashMap;
import java.util.Map;

import com.fasterxml.jackson.annotation.JsonAnyGetter;
import com.fasterxml.jackson.annotation.JsonAnySetter;
import com.fasterxml.jackson.annotation.JsonIgnore;

/**
 * Chapter is a list of VideoRecords in a Playlist.
 *
 * @author Jesse Morgan <jesse@jesterpm.net>
 */
public class Chapter implements Cloneable {
    private Map<String, VideoRecord> mVideos;

    public Chapter() {
        mVideos = new HashMap<String, VideoRecord>();
    }

    /**
     * @return The VideoRecord for videoid or null if videoid is not in the chapter.
     */
    public VideoRecord getVideoRecord(String videoid) {
        return mVideos.get(videoid);
    }

    /**
     * @return A map of video ids to VideoRecords.
     */
    @JsonAnyGetter
    public Map<String, VideoRecord> getVideos() {
        return mVideos;
    }

    /**
     * Set the VideoRecord for a video id.
     * @param videoId the video id.
     * @param video the VideoRecord.
     */
    @JsonAnySetter
    public void setVideoRecord(String videoId, VideoRecord video) {
        mVideos.put(videoId, video);
    }

    /**
     * Remove the VideoRecord for a video id.
     * @param videoId The id to remove.
     */
    public void removeVideoRecord(String videoId) {
        mVideos.remove(videoId);
    }

    /**
     * @return true if every required video has been completed.
     */
    @JsonIgnore
    public boolean isComplete() {
        boolean complete = true;

        for (VideoRecord r : mVideos.values()) {
            if (r.getRequired() && !r.getComplete()) {
                return false;
            }
        }

        return complete;
    }

    /**
     * Deeply clone a chapter.
     *
     * @return a new Chapter object identical but independent of this one.
     */
    public Chapter clone() throws CloneNotSupportedException {
        Chapter c = new Chapter();
        for (Map.Entry<String, VideoRecord> videoEntry : mVideos.entrySet()) {
            c.setVideoRecord(videoEntry.getKey(), videoEntry.getValue().clone());
        }
        return c;
    }
}