//=============================================================================
// SaltedFish Plugins - Skill Update
// SF_SkillUpdate.js
// License: MIT
//=============================================================================

var Imported = Imported || {};
Imported.SF_SkillUpdate = true;

var SF_Plugins = SF_Plugins || {};
SF_Plugins.SF_SkillUpdate = SF_Plugins.SF_SkillUpdate || {};
SF_Plugins.SF_SkillUpdate.version = 1.0;

//=============================================================================
/*:
 * @plugindesc v1.0 Allows you to auto update skills.
 * @author SaltedFish
 *
 * @help
 * ============================================================================
 * Introduction
 * ============================================================================
 *
 * When learning a high-priority skill with the same ID, the skill will be
 * automatically forgotten
 * 当学习一个同ID的高优先级技能时，低优先级技能将自动遗忘
 *
 * ============================================================================
 * Skill Notes
 * ============================================================================
 *
 * You can set the skill to auto update by adding the following to the skill's
 * note:
 * <SF_SkillUpdate: ID, priority>
 *
 * ID: The skill ID
 * priority: The skill priority. High-priority skills override low-priority
 * skills
 *
 * 在技能的注释中添加以下代码，可以设置技能自动更新
 * <SF_SkillUpdate: ID, priority>
 *
 * ID: 技能ID
 * priority: 技能优先级。高优先级的技能会覆盖低优先级的技能
 *
 */
//=============================================================================

//=============================================================================
// DataManager
//=============================================================================

SF_Plugins.SF_SkillUpdate.DataManager_isDatabaseLoaded = DataManager.isDatabaseLoaded;
DataManager.isDatabaseLoaded = function () {
    if (!SF_Plugins.SF_SkillUpdate.DataManager_isDatabaseLoaded.call(this)) return false;
    if (!this.SF_SkillUpdate_isDatabaseLoaded($dataSkills)) return false;
    return true;
};

DataManager.SF_SkillUpdate_isDatabaseLoaded = function (group) {
    var note = /<SF_SkillUpdate:\s*?(\d+),\s*?(\d+)>/i;
    for (var i = 1; i < group.length; i++) {
        var obj = group[i];
        var noteData = obj.note.split(/[\r\n]+/);
        obj.SF_Skill_ID = 0;
        obj.SF_Skill_priority = 0;
        for (var j = 0; j < noteData.length; j++) {
            var line = noteData[j];
            if (line.match(note)) {
                obj.SF_Skill_ID = RegExp.$1;
                obj.SF_Skill_priority = parseInt(RegExp.$2);
            }
        }
    }
    return true;
};

//=============================================================================
// Game_Actor
//=============================================================================

SF_Plugins.SF_SkillUpdate.Game_Actor_learnSkill = Game_Actor.prototype.learnSkill;
Game_Actor.prototype.learnSkill = function (skillId) {
    SF_Plugins.SF_SkillUpdate.Game_Actor_learnSkill.call(this, skillId);
    var skill = $dataSkills[skillId];
    if (skill.SF_Skill_ID > 0 && skill.SF_Skill_priority > 0) {
        var needForgetSkills = this.skills().filter(function (obj) {
            return obj.SF_Skill_ID === skill.SF_Skill_ID && obj.SF_Skill_priority < skill.SF_Skill_priority;
        });
        for (var i = 0; i < needForgetSkills.length; i++) {
            this.forgetSkill(needForgetSkills[i].id);
        }
    }
};