import React, {useState} from "react";
import {useMarkdownTemplate} from "../../utils/queries/template-queries";

const TemplatedEditorComponent = ({ variable, value, namespace, onContentChanged }) => {
    if(variable.type.base_type === "string") {
        return (
            <div>
                <label>{namespace}{variable.name} - {variable.type.base_type}</label>
                <input
                    type="text"
                    className="input"
                    value={value}
                    onChange={(e) => onContentChanged(variable.name, e.target.value)}
                />
                <hr/>
            </div>
        );
    }
    if (variable.type.base_type === 'markdown') {
        return(
            <div>
                <label>{namespace}{variable.name} - {variable.type.base_type}</label>
                <textarea
                    className="textarea"
                    value={value}
                    onChange={(e) => onContentChanged(variable.name, e.target.value)}
                />
                <hr/>
            </div>
        );
    }

    if(variable.type.base_type === "enum"){
        return (
            <div>
                <label>{namespace}{variable.name} - {variable.type.base_type}</label>
                <select
                    value={value}
                    onChange={(e) => onContentChanged(variable.name, e.target.value)}
                >
                    {variable.type.definition.enums.map((item) => (
                        <option key={item} value={item}>{item}</option>
                    ))}
                </select>
                <hr/>
            </div>
        );
    }
    if(variable.type.base_type === "list"){
        const [cache, setCache] = useState(value);
        const defaultValue = variable.type.definition.default || undefined;
        const addItem = () => {
            setCache(prev => {
                const newCache = [...prev, defaultValue];
                onContentChanged(variable.name, newCache);
                return newCache;
            });
        };
        const removeItem = (index) => {
            setCache(prev => {
                const newCache = prev.filter((_, i) => i!==index);
                onContentChanged(variable.name, newCache);
                return newCache;
            })
        };
        const _onContentChanged = (index, value) => {
            setCache(prev => {
                const newCache = [...prev];
                newCache[index] = value;
                onContentChanged(variable.name, newCache);
                return newCache;
            });
        };


        return (
            <div>
                <label>{namespace}{variable.name} - {variable.type.base_type}[{variable.type.extend_type.base_type}]</label>
                {cache.map((item, index) =>
                    (<div key={index}>
                        <TemplatedEditorComponent
                            variable={{name: index, type: variable.type.extend_type}}
                            value={item}
                            namespace={namespace}
                            onContentChanged={_onContentChanged}
                        />
                        <button
                            className="button is-danger"
                            type="button"
                            onClick={() => removeItem(index)}
                        >
                            DELETE
                        </button>
                    </div>)
                )}
                <button className="button is-warning" type="button" onClick={addItem}>
                    ADD
                </button>
                <hr/>
            </div>
        );
    }

    if(variable.type.base_type === 'template'){
        const {data: _template, isFetching: _templateIsFetching} = useMarkdownTemplate(variable.type.definition.template_id);
        if(_templateIsFetching){
            return(<p>Loading...</p>);
        }
        const _parameters = _template.parameters;
        const _namespace = namespace + _template.title+ "::"
        const _onSubChanged = (subKey, subValue) => {
            const updated = {
                ...value,
                [subKey]: subValue
            };
            onContentChanged(variable.name, updated);
        };
        return (
            <div>
                <label>{namespace}{variable.name} - {variable.type.base_type}</label>
                {
                    _parameters.map((_variable, index) => (
                        <div key={index}>
                            <TemplatedEditorComponent
                                variable={_variable}
                                value={value[_variable.name]}
                                namespace={_namespace}
                                onContentChanged={_onSubChanged}
                            />
                        </div>
                    ))
                }
                <hr/>
            </div>
        );
    }
};

const TemplatedEditor = ({content, template, onContentChanged}) => {
    if(!template){
        template = {
            parameters: [
                {
                    name: "markdown",
                    type: {
                        base_type: "markdown",
                        definition: {}
                    }
                }
            ],
            layout: "<markdown/>",
            title: "default"
        };
    }
    return(
        <div>
            {
                template.parameters.map((variable, index) => (
                    <div key={index}>
                        <TemplatedEditorComponent
                            variable={variable}
                            value={content[variable.name]}
                            namespace={template.title+"::"}
                            onContentChanged={onContentChanged}
                        />
                    </div>
                ))
            }
        </div>
    );
};
export default TemplatedEditor;