package com.sztzjy.linkCommerce.training.knowledge;

import com.sztzjy.linkCommerce.entity.TrainingTask;
import com.sztzjy.linkCommerce.entity.TrainingTaskClassConfig;
import org.apache.commons.lang3.StringUtils;

/** Effective task data for a student: enabled teacher configuration overrides the admin default field by field. */
public class EffectiveTrainingTaskContent {
    private final String scope;
    private final String effectiveConfigId;
    private final String knowledge;
    private final String background;
    private final String objectives;
    private final String requirements;
    private final String steps;
    private final String materialName;
    private final String materialUrl;

    private EffectiveTrainingTaskContent(String scope, String effectiveConfigId, String knowledge, String background,
                                         String objectives, String requirements, String steps, String materialName,
                                         String materialUrl) {
        this.scope = scope;
        this.effectiveConfigId = effectiveConfigId;
        this.knowledge = knowledge;
        this.background = background;
        this.objectives = objectives;
        this.requirements = requirements;
        this.steps = steps;
        this.materialName = materialName;
        this.materialUrl = materialUrl;
    }

    public static EffectiveTrainingTaskContent resolve(TrainingTask task, TrainingTaskClassConfig classConfig) {
        boolean useTeacher = classConfig != null && Boolean.TRUE.equals(classConfig.getEnabled())
                && StringUtils.isNotBlank(classConfig.getId());
        return new EffectiveTrainingTaskContent(
                useTeacher ? "TEACHER" : "ADMIN",
                useTeacher ? classConfig.getId() : task.getId(),
                value(useTeacher ? classConfig.getKnowledge() : null, task.getKnowledge()),
                value(useTeacher ? classConfig.getBackground() : null, task.getBackground()),
                value(useTeacher ? classConfig.getObjectives() : null, task.getObjectives()),
                value(useTeacher ? classConfig.getRequirements() : null, task.getRequirements()),
                value(useTeacher ? classConfig.getSteps() : null, task.getSteps()),
                value(useTeacher ? classConfig.getMaterialName() : null, task.getMaterialName()),
                value(useTeacher ? classConfig.getMaterialUrl() : null, task.getMaterialUrl()));
    }

    private static String value(String preferred, String fallback) {
        return StringUtils.isNotBlank(preferred) ? preferred : fallback;
    }

    public String getScope() { return scope; }
    public String getEffectiveConfigId() { return effectiveConfigId; }
    public String getKnowledge() { return knowledge; }
    public String getBackground() { return background; }
    public String getObjectives() { return objectives; }
    public String getRequirements() { return requirements; }
    public String getSteps() { return steps; }
    public String getMaterialName() { return materialName; }
    public String getMaterialUrl() { return materialUrl; }
}