// various functions for interation with ui.py not large enough to warrant putting them in separate files

function selected_gallery_index(){
    var gr = gradioApp()
    var buttons = gradioApp().querySelectorAll(".gallery-item")
    var button = gr.querySelector(".gallery-item.\\!ring-2")

    var result = -1
    buttons.forEach(function(v, i){ if(v==button) { result = i } })

    return result
}

function extract_image_from_gallery(gallery){
    if(gallery.length == 1){
        return gallery[0]
    }

    index = selected_gallery_index()

    if (index < 0 || index >= gallery.length){
        return [null]
    }

    return gallery[index];
}

function extract_image_from_gallery_img2img(gallery){
    gradioApp().querySelectorAll('button')[1].click();
    return extract_image_from_gallery(gallery);
}

function extract_image_from_gallery_extras(gallery){
    gradioApp().querySelectorAll('button')[2].click();
    return extract_image_from_gallery(gallery);
}

function submit(){
    // this calls a function from progressbar.js
    requestProgress()

    res = []
    for(var i=0;i<arguments.length;i++){
        res.push(arguments[i])
    }

    // As it is currently, txt2img and img2img send back the previous output args (txt2img_gallery, generation_info, html_info) whenever you generate a new image.
    // This can lead to uploading a huge gallery of previously generated images, which leads to an unnecessary delay between submitting and beginning to generate.
    // I don't know why gradio is seding outputs along with inputs, but we can prevent sending the image gallery here, which seems to be an issue for some.
    // If gradio at some point stops sending outputs, this may break something
    if(Array.isArray(res[res.length - 3])){
        res[res.length - 3] = null
    }

    return res
}

function ask_for_style_name(_, prompt_text, negative_prompt_text) {
    name_ = prompt('Style name:')
    return name_ === null ? [null, null, null]: [name_, prompt_text, negative_prompt_text]
}

opts = {}
function apply_settings(jsdata){
    console.log(jsdata)

    opts = JSON.parse(jsdata)

    return jsdata
}

onUiUpdate(function(){
	if(Object.keys(opts).length != 0) return;

	json_elem = gradioApp().getElementById('settings_json')
	if(json_elem == null) return;

    textarea = json_elem.querySelector('textarea')
    jsdata = textarea.value
    opts = JSON.parse(jsdata)


    Object.defineProperty(textarea, 'value', {
        set: function(newValue) {
            var valueProp = Object.getOwnPropertyDescriptor(HTMLTextAreaElement.prototype, 'value');
            var oldValue = valueProp.get.call(textarea);
            valueProp.set.call(textarea, newValue);

            if (oldValue != newValue) {
                opts = JSON.parse(textarea.value)
            }
        },
        get: function() {
            var valueProp = Object.getOwnPropertyDescriptor(HTMLTextAreaElement.prototype, 'value');
            return valueProp.get.call(textarea);
        }
    });

    json_elem.parentElement.style.display="none"
})