import { utils } from "@/env";
import { Panel } from "@components/setting/panel";
import { GM_getValue, GM_setValue, unsafeWindow } from "ViteGM";

/** 弹幕过滤器 */
export const BilibiliDanmakuFilter = {
  key: "bili-danmaku-filter",
  /** 弹幕类型 */
  mode: {
    6: "从左往右",
    5: "顶部",
    4: "底部",
    1: "从右往左",
  },
  $data: {
    danmakuArray: <DanmaConfig[]>[],
  },
  /** 初始化弹幕过滤器 */
  async init() {
    let totalRule = this.parseRule();
    let that = this;
    /**
     * 自定义的弹幕过滤函数，用于替换页面原有的过滤函数
     * @param danmaConfig
     */
    let ownFilter = function (danmaConfig: DanmaConfig | BangumiDanmaConfig): boolean {
      let isFilter = false;
      isFilter = that.filter(danmaConfig as DanmaConfig, totalRule);
      return isFilter;
    };
  },
  /**
   * 判断是否需要过滤
   * @param danmaConfig
   * @param totalRule
   * @param danmakuArray
   */
  filter(danmaConfig: DanmaConfig, totalRule: RegExp[]): boolean {
    let filterFlag = false;
    if (!filterFlag) {
      if (Panel.getValue("bili-danmaku-filter-type-roll")) {
        // 滚动
        if (danmaConfig.mode === 1 || danmaConfig.mode === 6) {
          filterFlag = true;
        }
      }
    }
    if (!filterFlag) {
      if (Panel.getValue("bili-danmaku-filter-type-top")) {
        // 顶部
        if (danmaConfig.mode === 5 || danmaConfig.mode === 1 || danmaConfig.mode === 6) {
          filterFlag = true;
        }
      }
    }
    if (!filterFlag) {
      if (Panel.getValue("bili-danmaku-filter-type-bottom")) {
        // 底部
        if (danmaConfig.mode === 4) {
          filterFlag = true;
        }
      }
    }
    if (!filterFlag) {
      if (Panel.getValue("bili-danmaku-filter-type-colour")) {
        // 彩色
        if (danmaConfig.color !== 16777215) {
          filterFlag = true;
        }
      }
    }
    if (!filterFlag) {
      if (Panel.getValue("bili-danmaku-filter-type-repeat")) {
        // 重复
        let findIndex = this.$data.danmakuArray.findIndex((__danmaConfig__, __index__) => {
          return danmaConfig.text === __danmaConfig__.text && danmaConfig != __danmaConfig__;
        });
        if (findIndex != -1) {
          filterFlag = true;
        }
      }
    }
    if (!filterFlag) {
      // if (Panel.getValue("bili-danmaku-filter-type-senior")) {
      // 	// 高级
      // }
    }

    if (!filterFlag) {
      if (Panel.getValue<boolean>("bili-danmaku-filter")) {
        // 自定义规则
        for (let ruleIndex = 0; ruleIndex < totalRule.length; ruleIndex++) {
          const rule = totalRule[ruleIndex];
          if (typeof danmaConfig.text === "string" && danmaConfig.text.match(rule)) {
            filterFlag = true;
            break;
          }
        }
      }
    }
    return filterFlag;
  },
  /** 解析规则 */
  parseRule() {
    let localRule = this.getValue();
    let rule: RegExp[] = [];
    localRule.split("\n").forEach((ruleItemStr) => {
      // 去除左右空格
      let ruleItem = ruleItemStr.trim();
      // 把规则转换为正则
      let regExpRule = new RegExp(utils.toRegExpStr(ruleItem), "ig");
      rule.push(regExpRule);
    });
    return rule;
  },
  getValue(): string {
    return GM_getValue(this.key, "");
  },
  setValue(value: string = "") {
    GM_setValue(this.key, value);
  },
};