const React = require("react");
const Component = React.Component;
const { View, Button, TextInput, StyleSheet } = require("react-native");
const { connect } = require("react-redux");
const { Log } = require("lib/log.js");
const { ActionButton } = require("lib/components/action-button.js");
const Folder = require("lib/models/Folder.js");
const BaseModel = require("lib/BaseModel.js");
const { ScreenHeader } = require("lib/components/screen-header.js");
const { reg } = require("lib/registry.js");
const { BaseScreenComponent } = require("lib/components/base-screen.js");
const { dialogs } = require("lib/dialogs.js");
const { themeStyle } = require("lib/components/global-style.js");
const { _ } = require("lib/locale.js");

class FolderScreenComponent extends BaseScreenComponent {
	static navigationOptions(options) {
		return { header: null };
	}

	constructor() {
		super();
		this.state = {
			folder: Folder.new(),
			lastSavedFolder: null,
		};
		this.styles_ = {};
	}

	styles() {
		const theme = themeStyle(this.props.theme);

		if (this.styles_[this.props.theme]) return this.styles_[this.props.theme];
		this.styles_ = {};

		let styles = {
			textInput: {
				color: theme.color,
				paddingLeft: 10,
			},
		};

		this.styles_[this.props.theme] = StyleSheet.create(styles);
		return this.styles_[this.props.theme];
	}

	componentWillMount() {
		if (!this.props.folderId) {
			const folder = Folder.new();
			this.setState({
				folder: folder,
				lastSavedFolder: Object.assign({}, folder),
			});
		} else {
			Folder.load(this.props.folderId).then(folder => {
				this.setState({
					folder: folder,
					lastSavedFolder: Object.assign({}, folder),
				});
			});
		}
	}

	isModified() {
		if (!this.state.folder || !this.state.lastSavedFolder) return false;
		let diff = BaseModel.diffObjects(this.state.folder, this.state.lastSavedFolder);
		delete diff.type_;
		return !!Object.getOwnPropertyNames(diff).length;
	}

	folderComponent_change(propName, propValue) {
		this.setState((prevState, props) => {
			let folder = Object.assign({}, prevState.folder);
			folder[propName] = propValue;
			return { folder: folder };
		});
	}

	title_changeText(text) {
		this.folderComponent_change("title", text);
	}

	async saveFolderButton_press() {
		let folder = Object.assign({}, this.state.folder);

		try {
			folder = await Folder.save(folder, { userSideValidation: true });
		} catch (error) {
			dialogs.error(this, _("The notebook could not be saved: %s", error.message));
			return;
		}

		this.setState({
			lastSavedFolder: Object.assign({}, folder),
			folder: folder,
		});

		this.props.dispatch({
			type: "NAV_GO",
			routeName: "Notes",
			folderId: folder.id,
		});
	}

	render() {
		let saveButtonDisabled = !this.isModified();

		return (
			<View style={this.rootStyle(this.props.theme).root}>
				<ScreenHeader title={_("Edit notebook")} showSaveButton={true} saveButtonDisabled={saveButtonDisabled} onSaveButtonPress={() => this.saveFolderButton_press()} />
				<TextInput style={this.styles().textInput} autoFocus={true} value={this.state.folder.title} onChangeText={text => this.title_changeText(text)} />
				<dialogs.DialogBox
					ref={dialogbox => {
						this.dialogbox = dialogbox;
					}}
				/>
			</View>
		);
	}
}

const FolderScreen = connect(state => {
	return {
		folderId: state.selectedFolderId,
		theme: state.settings.theme,
	};
})(FolderScreenComponent);

module.exports = { FolderScreen };