from __future__ import annotations

from typing import List

from PySide6.QtCore import QThread, Signal


class SearchWorker(QThread):
    finished = Signal(list)

    def __init__(self, lines: List[str], needle: str, case_sensitive: bool) -> None:
        super().__init__()
        self._lines = lines
        self._needle = needle
        self._case_sensitive = case_sensitive

    def run(self) -> None:
        if not self._needle:
            self.finished.emit([])
            return
        needle = self._needle if self._case_sensitive else self._needle.lower()
        matches: List[int] = []
        for idx, line in enumerate(self._lines):
            hay = line if self._case_sensitive else line.lower()
            if needle in hay:
                matches.append(idx)
        self.finished.emit(matches)