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import React, { useEffect, useState, useRef } from "react";
import { SUPPORTED_LANGUAGES } from "../../utils/constants";
import styles from "./CustomSelect.module.css";
const CustomSelect = ({ onSelect, textAreaRef, isModalOpen }) => {
const [isOpen, setIsOpen] = useState(false);
const [options, setOptions] = useState(SUPPORTED_LANGUAGES);
const [selectedOption, setSelectedOption] = useState(
options.length > 0 ? options[0] : null,
);
const [focusedOptionIndex, setFocusedOptionIndex] = useState(0);
const selectRef = useRef(null);
const searchRef = useRef(null);
const optionsRef = useRef([]);
const toggleDropdown = () => {
setIsOpen(!isOpen);
};
const handleOptionClick = (option, index) => {
setSelectedOption(option);
onSelect(option.value);
setFocusedOptionIndex(index);
setIsOpen(false);
setOptions(SUPPORTED_LANGUAGES);
if (textAreaRef.current) {
textAreaRef.current.focus();
}
};
const handleClickOutside = (event) => {
if (selectRef.current && !selectRef.current.contains(event.target)) {
setIsOpen(false);
setOptions(SUPPORTED_LANGUAGES);
if (textAreaRef.current) {
textAreaRef.current.focus();
}
}
};
const handleChange = (e) => {
const searchVal = e.target.value;
const filteredOptions =
searchVal.length > 0
? SUPPORTED_LANGUAGES.filter((option) =>
option.label.toLowerCase().includes(searchVal.toLowerCase()),
)
: SUPPORTED_LANGUAGES;
setOptions(filteredOptions);
setFocusedOptionIndex(0);
};
const handleKeyDown = (event) => {
if (isOpen) {
switch (event.key) {
case "ArrowDown":
setFocusedOptionIndex((prevIndex) => {
const newIndex =
prevIndex < options.length - 1 ? prevIndex + 1 : prevIndex;
optionsRef.current[newIndex].scrollIntoView({ block: "nearest" });
return newIndex;
});
break;
case "ArrowUp":
setFocusedOptionIndex((prevIndex) => {
const newIndex = prevIndex > 0 ? prevIndex - 1 : prevIndex;
optionsRef.current[newIndex].scrollIntoView({ block: "nearest" });
return newIndex;
});
break;
case "Enter":
event.preventDefault();
handleOptionClick(options[focusedOptionIndex], focusedOptionIndex);
break;
case "Escape":
setIsOpen(false);
setOptions(SUPPORTED_LANGUAGES);
if (textAreaRef.current) {
textAreaRef.current.focus();
}
break;
default:
break;
}
} else if (!isModalOpen && event.ctrlKey && event.key === "l") {
event.preventDefault();
setIsOpen(true);
}
};
useEffect(() => {
document.addEventListener("mousedown", handleClickOutside);
document.addEventListener("keydown", handleKeyDown);
return () => {
document.removeEventListener("mousedown", handleClickOutside);
document.removeEventListener("keydown", handleKeyDown);
};
}, [isOpen, options, focusedOptionIndex]);
useEffect(() => {
if (isOpen && searchRef.current) {
searchRef.current.focus();
}
}, [isOpen]);
return (
<div className={styles.select} ref={selectRef}>
<div className={styles.selected__option} onClick={toggleDropdown}>
{selectedOption ? (
<>
<span></></span>
<span>{selectedOption.label}</span>
<span>▼</span>
</>
) : (
"Select an option"
)}
</div>
{isOpen && (
<div className={styles.options__container}>
<input
onChange={handleChange}
className={styles.options__search}
ref={searchRef}
placeholder="Search..."
/>
<div className={styles.options}>
{options.map((option, index) => (
<div
key={option.value}
className={`${styles.option} ${index === focusedOptionIndex ? styles.focused : ""}`}
onClick={() => handleOptionClick(option, index)}
tabIndex={0}
ref={(el) => (optionsRef.current[index] = el)}
>
{option.label}
</div>
))}
</div>
</div>
)}
</div>
);
};
export default CustomSelect;
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