const React = require('react'); const Component = React.Component;
const { TouchableOpacity , Button, Text, Image, StyleSheet, ScrollView, View, Alert } = require('react-native');
const { connect } = require('react-redux');
const Icon = require('react-native-vector-icons/Ionicons').default;
const Tag = require('lib/models/Tag.js');
const Note = require('lib/models/Note.js');
const Folder = require('lib/models/Folder.js');
const Setting = require('lib/models/Setting.js');
const { FoldersScreenUtils } = require('lib/folders-screen-utils.js');
const { Synchronizer } = require('lib/synchronizer.js');
const NavService = require('lib/services/NavService.js');
const { reg } = require('lib/registry.js');
const { _ } = require('lib/locale.js');
const { globalStyle, themeStyle } = require('lib/components/global-style.js');
const shared = require('lib/components/shared/side-menu-shared.js');
const { ActionButton } = require('lib/components/action-button.js');

class SideMenuContentComponent extends Component {

	constructor() {
		super();
		this.state = {
			syncReportText: '',
		};
		this.styles_ = {};

		this.tagButton_press = this.tagButton_press.bind(this);
		this.newFolderButton_press = this.newFolderButton_press.bind(this);
		this.synchronize_press = this.synchronize_press.bind(this);
		this.configButton_press = this.configButton_press.bind(this);
		this.renderFolderItem = this.renderFolderItem.bind(this);
	}

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

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

		let styles = {
			menu: {
				flex: 1,
				backgroundColor: theme.backgroundColor
			},
			button: {
				flex: 1,
				flexDirection: 'row',
				height: 36,
				alignItems: 'center',
				paddingLeft: theme.marginLeft,
				paddingRight: theme.marginRight,
			},
			buttonText: {
				flex: 1,
				color: theme.color,
				paddingLeft: 10,
				fontSize: theme.fontSize,
			},
			syncStatus: {
				paddingLeft: theme.marginLeft,
				paddingRight: theme.marginRight,
				color: theme.colorFaded,
				fontSize: theme.fontSizeSmaller,
				flex: 0,
			},
			sidebarIcon: {
				fontSize: 22,
				color: theme.color,
			},
		};

		styles.folderButton = Object.assign({}, styles.button);
		styles.folderButton.paddingLeft = 0;
		styles.folderButtonText = Object.assign({}, styles.buttonText);
		styles.folderButtonSelected = Object.assign({}, styles.folderButton);
		styles.folderButtonSelected.backgroundColor = theme.selectedColor;
		styles.folderIcon = Object.assign({}, theme.icon);
		styles.folderIcon.color = theme.colorFaded;//'#0072d5';
		styles.folderIcon.paddingTop = 3;

		styles.sideButton = Object.assign({}, styles.button, { flex: 0 });
		styles.sideButtonText = Object.assign({}, styles.buttonText);

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

	folder_press(folder) {
		if (folder === 'all') {
			this.props.dispatch({ type: 'SIDE_MENU_CLOSE' });

			this.props.dispatch({
				type: 'NAV_GO',
				routeName: 'Notes',
				smartFilterId: 'c3176726992c11e9ac940492261af972',
			});
		} else {
			this.props.dispatch({ type: 'SIDE_MENU_CLOSE' });

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

	async folder_longPress(folder) {
		if (folder === 'all') return;

		const buttons = [];

		Alert.alert(
			'',
			_('Notebook: %s', folder.title), [
				{
					text: _('Rename'),
					onPress: () => {
						if (folder.encryption_applied) {
							alert(_('Encrypted notebooks cannot be renamed'));
							return;
						}

						this.props.dispatch({ type: 'SIDE_MENU_CLOSE' });

						this.props.dispatch({
							type: 'NAV_GO',
							routeName: 'Folder',
							folderId: folder.id,
						});
					}
				},
				{
					text: _('Delete'),
					onPress: () => {
						Alert.alert('', _('Delete notebook "%s"?\n\nAll notes and sub-notebooks within this notebook will also be deleted.', folder.title), [
							{
								text: _('OK'),
								onPress: () => {
									Folder.delete(folder.id);
								},
							},
							{
								text: _('Cancel'),
								onPress: () => {},
								style: 'cancel',
							},
						]);
					},
					style: 'destructive',
				},
				{
					text: _('Cancel'),
					onPress: () => {},
					style: 'cancel',
				}
			], {
				cancelable: false
			}
		);
	}

	folder_togglePress(folder) {
		this.props.dispatch({
			type: 'FOLDER_TOGGLE',
			id: folder.id,
		});
	}

	tagButton_press() {
		this.props.dispatch({ type: 'SIDE_MENU_CLOSE' });

		this.props.dispatch({
			type: 'NAV_GO',
			routeName: 'Tags',
		});
	}

	configButton_press() {
		this.props.dispatch({ type: 'SIDE_MENU_CLOSE' });
		NavService.go('Config');
	}

	newFolderButton_press() {
		this.props.dispatch({ type: 'SIDE_MENU_CLOSE' });

		this.props.dispatch({
			type: 'NAV_GO',
			routeName: 'Folder',
			folderId: null,
		});
	}

	async synchronize_press() {
		const actionDone = await shared.synchronize_press(this);
		if (actionDone === 'auth') this.props.dispatch({ type: 'SIDE_MENU_CLOSE' });
	}

	renderFolderItem(folder, selected, hasChildren, depth) {
		const theme = themeStyle(this.props.theme);

		const folderButtonStyle = {
			flex: 1,
			flexDirection: 'row',
			height: 36,
			alignItems: 'center',
			paddingLeft: theme.marginLeft,
			paddingRight: theme.marginRight,
		};
		if (selected) folderButtonStyle.backgroundColor = theme.selectedColor;
		folderButtonStyle.paddingLeft = depth * 10;

		const iconWrapperStyle = { paddingLeft: 10, paddingRight: 10 };
		if (selected) iconWrapperStyle.backgroundColor = theme.selectedColor;

		let iconWrapper = null;

		if (folder !== 'all') {
			const iconName = this.props.collapsedFolderIds.indexOf(folder.id) >= 0 ? 'md-arrow-dropdown' : 'md-arrow-dropup';
			const iconComp = <Icon name={iconName} style={this.styles().folderIcon} />

			iconWrapper = !hasChildren ? null : (
				<TouchableOpacity style={iconWrapperStyle} folderid={folder.id} onPress={() => { if (hasChildren) this.folder_togglePress(folder) }}>
					{ iconComp }
				</TouchableOpacity>
			);
		}

		return (
			<View key={folder === 'all' ? folder : folder.id} style={{ flex: 1, flexDirection: 'row' }}>
				<TouchableOpacity style={{ flex: 1 }} onPress={() => { this.folder_press(folder) }} onLongPress={() => { this.folder_longPress(folder) }}>
					<View style={folderButtonStyle}>
						<Text numberOfLines={1} style={this.styles().folderButtonText}>{folder === 'all' ? _('All notes') : Folder.displayTitle(folder)}</Text>
					</View>
				</TouchableOpacity>
				{ iconWrapper }
			</View>
		);
	}

	renderSideBarButton(key, title, iconName, onPressHandler) {
		const theme = themeStyle(this.props.theme);

		return (
			<TouchableOpacity key={key} onPress={onPressHandler}>
				<View style={this.styles().sideButton}>
					<Icon name={iconName} style={this.styles().sidebarIcon} />
					<Text style={this.styles().sideButtonText}>{title}</Text>
				</View>
			</TouchableOpacity>
		);
	}

	makeDivider(key) {
		return <View style={{ marginTop: 15, marginBottom: 15, flex: -1, borderBottomWidth: 1, borderBottomColor: globalStyle.dividerColor }} key={key}></View>
	}

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

		const items = [];

		items.push(this.makeDivider('divider_1'));

		items.push(this.renderSideBarButton('newFolder_button', _('New Notebook'), 'md-folder-open', this.newFolderButton_press));

		items.push(this.renderSideBarButton('tag_button', _('Tags'), 'md-pricetag', this.tagButton_press));

		items.push(this.renderSideBarButton('config_button', _('Configuration'), 'md-settings', this.configButton_press));

		items.push(this.makeDivider('divider_2'));

		let lines = Synchronizer.reportToLines(this.props.syncReport);
		const syncReportText = lines.join("\n");

		let decryptionReportText = '';
		if (this.props.decryptionWorker && this.props.decryptionWorker.state !== 'idle' && this.props.decryptionWorker.itemCount) {
			decryptionReportText = _('Decrypting items: %d/%d', this.props.decryptionWorker.itemIndex + 1, this.props.decryptionWorker.itemCount);
		}

		let resourceFetcherText = '';
		if (this.props.resourceFetcher && this.props.resourceFetcher.toFetchCount) {
			resourceFetcherText = _('Fetching resources: %d/%d', this.props.resourceFetcher.fetchingCount, this.props.resourceFetcher.toFetchCount);
		}

		let fullReport = [];
		if (syncReportText) fullReport.push(syncReportText);
		if (resourceFetcherText) fullReport.push(resourceFetcherText);
		if (decryptionReportText) fullReport.push(decryptionReportText);

		items.push(this.renderSideBarButton(
			'synchronize_button',
			!this.props.syncStarted ? _('Synchronise') : _('Cancel synchronisation'),
			!this.props.syncStarted ? 'md-sync' : 'md-close',
			this.synchronize_press
		));

		if (fullReport.length) items.push(<Text key='sync_report' style={this.styles().syncStatus}>{fullReport.join('\n')}</Text>);

		return (
			<View style={{ flex: 0, flexDirection: 'column', paddingBottom: theme.marginBottom }}>
				{ items }
			</View>
		);
	}

	render() {
		let items = [];

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

		// HACK: inner height of ScrollView doesn't appear to be calculated correctly when
		// using padding. So instead creating blank elements for padding bottom and top.
		items.push(<View style={{ height: globalStyle.marginTop }} key='bottom_top_hack'/>);

		items.push(this.renderFolderItem('all', this.props.notesParentType === 'SmartFilter', false, 0));

		items.push(this.makeDivider('divider_all'));

		if (this.props.folders.length) {
			const result = shared.renderFolders(this.props, this.renderFolderItem);
			const folderItems = result.items;
			items = items.concat(folderItems);
		}

		let style = {
			flex:1,
			borderRightWidth: 1,
			borderRightColor: globalStyle.dividerColor,
			backgroundColor: theme.backgroundColor,
		};

		return (
			<View style={style}>
				<View style={{flex:1, opacity: this.props.opacity}}>
					<ScrollView scrollsToTop={false} style={this.styles().menu}>
						{ items }
					</ScrollView>
					{ this.renderBottomPanel() }
				</View>
			</View>
		);
	}
};

const SideMenuContent = connect(
	(state) => {
		return {
			folders: state.folders,
			syncStarted: state.syncStarted,
			syncReport: state.syncReport,
			selectedFolderId: state.selectedFolderId,
			selectedTagId: state.selectedTagId,
			notesParentType: state.notesParentType,
			locale: state.settings.locale,
			theme: state.settings.theme,
			// Don't do the opacity animation as it means re-rendering the list multiple times
			// opacity: state.sideMenuOpenPercent,
			collapsedFolderIds: state.collapsedFolderIds,
			decryptionWorker: state.decryptionWorker,
			resourceFetcher: state.resourceFetcher,
		};
	}
)(SideMenuContentComponent)

module.exports = { SideMenuContent };