import { useEffect, useState } from "react";
import { Modal } from "./Modal";
import { search, type SearchResponse } from "api/api";
import SearchResults from "../SearchResults";
import type { MergeFunc, MergeSearchCleanerFunc } from "~/routes/MediaItems/MediaLayout";
import { useNavigate } from "react-router";

interface Props {
    open: boolean 
    setOpen: Function
    type: string
    currentId: number
    currentTitle: string
    mergeFunc: MergeFunc
    mergeCleanerFunc: MergeSearchCleanerFunc
}

export default function MergeModal(props: Props) {
    const [query, setQuery] = useState('');
    const [data, setData] = useState<SearchResponse>();
    const [debouncedQuery, setDebouncedQuery] = useState(query);
    const [mergeTarget, setMergeTarget] = useState<{title: string, id: number}>({title: '', id: 0})
    const [mergeOrderReversed, setMergeOrderReversed] = useState(false)
    const [replaceImage, setReplaceImage] = useState(false)
    const navigate = useNavigate()


    const closeMergeModal = () => {
        props.setOpen(false)
        setQuery('')
        setData(undefined)
        setMergeOrderReversed(false)
        setMergeTarget({title: '', id: 0})
    }

    const toggleSelect = ({title, id}: {title: string, id: number}) => {
        if (mergeTarget.id === 0) {
            setMergeTarget({title: title, id: id})
        } else {
            setMergeTarget({title:"", id: 0})
        }
    }

    useEffect(() => {
        console.log(mergeTarget)
    }, [mergeTarget])

    const doMerge = () => {
        let from, to
        if (!mergeOrderReversed) {
            from = mergeTarget
            to = {id: props.currentId, title: props.currentTitle}
        } else {
            from = {id: props.currentId, title: props.currentTitle}
            to = mergeTarget
        }
        props.mergeFunc(from.id, to.id, replaceImage)
        .then(r => {
            if (r.ok) {
                if (mergeOrderReversed) {
                    navigate(`/${props.type.toLowerCase()}/${mergeTarget.id}`)
                    closeMergeModal()
                } else {
                    window.location.reload()
                }
            } else {
                // TODO: handle error
                console.log(r)
            }
        })
        .catch((err) => console.log(err))
    }
    
    useEffect(() => {
        const handler = setTimeout(() => {
            setDebouncedQuery(query);
            if (query === '') {
                setData(undefined)
            }
        }, 300);

        return () => {
            clearTimeout(handler);
        };
    }, [query]);

    useEffect(() => {
        if (debouncedQuery) {
            search(debouncedQuery).then((r) => {
                r = props.mergeCleanerFunc(r, props.currentId)
                setData(r);
            });
        }
    }, [debouncedQuery]);

    return (
    <Modal isOpen={props.open} onClose={closeMergeModal}>
        <h2>Merge {props.type}s</h2>
        <div className="flex flex-col items-center">
            <input
                type="text"
                autoFocus
                // i find my stupid a(n) logic to be a little silly so im leaving it in even if its not optimal
                placeholder={`Search for a${props.type.toLowerCase()[0] === 'a' ? 'n' : ''} ${props.type.toLowerCase()} to be merged into the current ${props.type.toLowerCase()}`}
                className="w-full mx-auto fg bg rounded p-2"
                onChange={(e) => setQuery(e.target.value)}
            />
            <SearchResults selectorMode data={data} onSelect={toggleSelect}/>
            { mergeTarget.id !== 0 ? 
            <>
            {mergeOrderReversed ? 
            <p className="mt-5"><strong>{props.currentTitle}</strong> will be merged into <strong>{mergeTarget.title}</strong></p>
            :
            <p className="mt-5"><strong>{mergeTarget.title}</strong> will be merged into <strong>{props.currentTitle}</strong></p>
            }
            <button className="hover:cursor-pointer px-5 py-2 rounded-md mt-5 bg-(--color-bg) hover:bg-(--color-bg-tertiary)" onClick={doMerge}>Merge Items</button>
            <div className="flex gap-2 mt-3">
                <input type="checkbox" name="reverse-merge-order" checked={mergeOrderReversed} onChange={() => setMergeOrderReversed(!mergeOrderReversed)} />
                <label htmlFor="reverse-merge-order">Reverse merge order</label>
            </div>
            {
            (props.type.toLowerCase() === "album" || props.type.toLowerCase() === "artist") &&
            <div className="flex gap-2 mt-3">
                <input type="checkbox" name="replace-image" checked={replaceImage} onChange={() => setReplaceImage(!replaceImage)} />
                <label htmlFor="replace-image">Replace image</label>
            </div>
            }
            </> :
            ''}
        </div>
    </Modal>
    )
}