// Metro module 10414 (f10415).
import { RowType } from "./renderer/RowGeneratorConstants";
export default class VisibleMessagesWindowHandler {
  data = null;
  callback = null;
  setCallback = (a0) => {
    this.callback = a0;
    if (this.data != null) {
      this.callback(this.data);
    }
  };
  clearCallback = () => {
    this.callback = null;
    this.data = null;
  };
  handleScrollPosition = ({ rows, firstVisibleMessageRowIndex, lastVisibleMessageRowIndex }) => {
    let r54, r87;
    if (this.callback != null) {
      const r1 = firstVisibleMessageRowIndex != null;
      let topVisibleMessage = null;
      if (r1) {
        const r2 = firstVisibleMessageRowIndex >= 0;
        let r20 = firstVisibleMessageRowIndex;
        topVisibleMessage = null;
        if (r2) {
          do {
            const r14 = rows[r20];
            const r21 = r14 != null;
            const r10 = r20;
            topVisibleMessage = r21 ? "rowType" in r14 ? r14.rowType === RowType.MESSAGE ? r14.message.id : void 0 : r14.type === RowType.MESSAGE ? r14.message?.id : void 0 : void 0;
            if (topVisibleMessage != null) {
              break;
            }
            r20 = r10 - 1;
            topVisibleMessage = null;
          } while (r20 >= 0);
        }
      }
      const r31 = lastVisibleMessageRowIndex != null;
      let bottomVisibleMessage = null;
      if (r31) {
        const r34 = lastVisibleMessageRowIndex < rows.length;
        let r37 = lastVisibleMessageRowIndex;
        bottomVisibleMessage = null;
        if (r34) {
          do {
            const r38 = rows[r37];
            const r39 = r38 != null;
            const r40 = r37;
            bottomVisibleMessage = r39 ? "rowType" in r38 ? r38.rowType === RowType.MESSAGE ? r38.message.id : void 0 : r38.type === RowType.MESSAGE ? r38.message?.id : void 0 : void 0;
            if (bottomVisibleMessage != null) {
              break;
            }
            const r52 = r40 + 1;
            r54 = r52 < rows.length;
            r37 = r52;
            bottomVisibleMessage = null;
          } while (r54);
        }
      }
      const r55 = firstVisibleMessageRowIndex != null;
      let middleVisibleMessage = null;
      if (r55) {
        const r57 = lastVisibleMessageRowIndex != null;
        middleVisibleMessage = null;
        if (r57) {
          let r65 = firstVisibleMessageRowIndex + Math.floor((lastVisibleMessageRowIndex - firstVisibleMessageRowIndex) / 2);
          const r67 = r65 < rows.length;
          middleVisibleMessage = null;
          if (r67) {
            do {
              const r70 = rows[r65];
              const r71 = r70 != null;
              const r72 = r65;
              middleVisibleMessage = r71 ? "rowType" in r70 ? r70.rowType === RowType.MESSAGE ? r70.message.id : void 0 : r70.type === RowType.MESSAGE ? r70.message?.id : void 0 : void 0;
              if (middleVisibleMessage != null) {
                break;
              }
              const r85 = r72 + 1;
              r87 = r85 < rows.length;
              r65 = r85;
              middleVisibleMessage = null;
            } while (r87);
          }
        }
      }
      this.data = {
        topVisibleMessage,
        middleVisibleMessage,
        bottomVisibleMessage
      };
      this.callback(this.data);
    }
  };
};