class SelectorBase {
    find(selector, parent) {
        const p = parent || document
        return parent.querySelector(selector)
    }

    findAll(selector, parent, callback) {
        const p = parent || document,
            result = parent.querySelectorAll(selector)
        result.forEach((e, i) => {
            callback(e, i)
        })
        return result;
    }

    set(obj) {
        obj = obj || {};
        const element = document.createElement(obj.tagName || 'div')
        if (obj.type) element.type = obj.type
        if (obj.className) element.className = obj.className
        if (obj.innerHTML) element.innerHTML = obj.innerHTML
        if (obj.name) element.name = obj.name
        if (obj.value) element.value = obj.value
        if (obj.events) {
            Object.keys(obj.events).forEach(event => {
                element.addEventListener(event, e => {
                    obj.events[event](element)
                })
            })
        }
        if (obj.attributes) {
            Object.keys(obj.attributes).forEach(attr => {
                element.setAttribute(attr, obj.attributes[attr])
            })
        }
        if (obj.parent) obj.parent.appendChild(element)
        return element
    }

    toggleClass(e, classFrom, classTo) {
        e.classList.remove(classFrom)
        e.classList.add(classTo)
    }

    toggleOpen(e) {
        if (e.classList.contains('open-autocomplete')) {
            e.classList.remove('open-autocomplete')
        } else {
            e.classList.add('open-autocomplete')
        }
    }

    request(url, query, callback) {
        const xhr = new XMLHttpRequest()
        xhr.responseType = 'json'
        xhr.open('get', `${url}?${query}`)
        xhr.onload = () => {
            callback(xhr.response)
        }
        xhr.send()
    }
}

class SearchBoxRemote extends SelectorBase {
    constructor(selector, obj) {
        super();
        this.set({
            tagName: 'link',
            parent: document.head,
            attributes: {href: '/_public/assets/css/search-box-remote.css', rel: 'stylesheet'}
        })
        document.querySelectorAll(selector).forEach(element => {
            new SearchBoxRemoteInitial(element, obj)
        })
    }
}

class SearchBoxRemoteInitial extends SelectorBase {
    url
    q
    id
    columns
    selected
    hidden
    searchBoxContainer
    inputSearch
    autocompleteList

    constructor(selector, obj) {
        super();
        obj = obj || {};
        this.url = obj.url || null
        this.q = obj.q || 'q'
        this.id = obj.id || 'id'
        this.columns = obj.columns || null
        this.init(selector)
    }

    init(e) {
        if (e.dataset && e.dataset.sbrName) {
            this.hidden = this.set({
                tagName: 'input',
                type: 'hidden',
                name: e.dataset.sbrName,
                value: e.dataset.sbrValue,
                parent: e.parentNode
            })
            e.setAttribute('readonly', true)
            e.classList.add('pointer')
            e.parentNode.classList.add('relative')
            this.selected = e
            e.addEventListener('click', () => {
                if(!event.target.classList.contains('clear-button') && !event.target.classList.contains('add-button')) {
                    this.setSearchBox(e.parentNode)
                }
            })
            this.setDefaultSelected()
        }
    }

    setSearchBox(container) {
        if (container.classList.contains('open-autocomplete')) {
            container.classList.remove('open-autocomplete')
            container.querySelector('.search-box-container').remove()
        } else {
            this.searchBoxContainer = this.set({className: 'search-box-container', parent: container})
            this.inputSearch = this.set({
                tagName: 'input', attributes: {
                    class: 'input-search',
                    placeholder: 'Търси ...',
                }, parent: this.searchBoxContainer
            })
            this.inputSearch.focus();
            if ((window.innerHeight - this.searchBoxContainer.getBoundingClientRect().top) < 500) {
                this.searchBoxContainer.classList.add('up-position')
                this.setAutocompleteList('prepend')
            } else {
                this.searchBoxContainer.classList.add('down-position')
                this.setAutocompleteList('append')
            }
            container.classList.add('open-autocomplete')
        }
    }

    setAutocompleteList(type) {
        this.autocompleteList = this.set({className: 'autocomplete-list autocomplete-image-list'})
        if (type === 'prepend') this.searchBoxContainer.insertBefore(this.autocompleteList, this.inputSearch)
        if (type === 'append') this.searchBoxContainer.append(this.autocompleteList)
        this.inputSearch.addEventListener('keydown', () => {
            this.keyDown()
        })
        this.inputSearch.addEventListener('keyup', () => {
            this.keyUp()
        })
    }

    setDefaultSelected() {
        if(this.hidden.value) {
            this.request(this.url, `${this.id}=${this.hidden.value}`, e => {
                if(e.settlement_id) {
                    this.selected.value = `${e.name}`;
                }
            })
        }
    }

    setAutocompleteValues(data) {
        const $this = this
        this.autocompleteList.innerHTML = ''
        data.forEach(e => {
            const resultRow = this.set({
                className: 'autocomplete-value',
                innerHTML: `${e.name}`,
                parent: this.autocompleteList,
                events: {
                    click: function () {
                        $this.hidden.value = e.object_id;
                        $this.searchBoxContainer.parentNode.classList.remove('open-autocomplete')
                        $this.searchBoxContainer.remove();
                        $this.selected.innerHTML = resultRow.innerHTML + '<div class="flex flex-center top5">' +
                            '<div class="add-button" onclick="addSelected()"><i class="la la-plus-circle"></i> Добави</div>' +
                            '<div class="clear-button" onclick="clearSelected()"><i class="la la-remove"></i>Изчисти</div></div>'
                        $this.selected.querySelector('.row-result').classList.add('panel-result-selected')
                    }
                }
            })
        })
    }


    keyDown() {
        this.autocompleteList.innerHTML = ''
    }

    keyUp() {
        if (this.inputSearch.value.length > 0) {
            this.request(this.url, `${this.q}=${this.inputSearch.value}`, data => {
                if (data && data.length > 0) {
                    this.setAutocompleteValues(data)
                    this.autocompleteList.classList.add('visible')
                } else {
                    this.closeAutocomplete()
                }
            })
        } else {
            this.closeAutocomplete()
        }
    }

    closeAutocomplete() {
        this.autocompleteList.classList.remove('visible')
        this.autocompleteList.innerHTML = ''
    }
}