'use strict'

/* global __, App, Article, Lists, Effect */
/* global xhrPost, dojo, dijit, Notify, $$, Feeds */

const	Filters = {
	filterDlgCheckAction: function(sender) {
		const action = sender.value;

		const action_param = $("filterDlg_paramBox");

		if (!action_param) {
			console.log("filterDlgCheckAction: can't find action param box!");
			return;
		}

		// if selected action supports parameters, enable params field
		if (action == 4 || action == 6 || action == 7 || action == 9) {
			new Effect.Appear(action_param, {duration: 0.5});

			Element.hide(dijit.byId("filterDlg_actionParam").domNode);
			Element.hide(dijit.byId("filterDlg_actionParamLabel").domNode);
			Element.hide(dijit.byId("filterDlg_actionParamPlugin").domNode);

			if (action == 7) {
				Element.show(dijit.byId("filterDlg_actionParamLabel").domNode);
			} else if (action == 9) {
				Element.show(dijit.byId("filterDlg_actionParamPlugin").domNode);
			} else {
				Element.show(dijit.byId("filterDlg_actionParam").domNode);
			}

		} else {
			Element.hide(action_param);
		}
	},
	createNewRuleElement: function(parentNode, replaceNode) {
		const form = document.forms["filter_new_rule_form"];
		const query = {op: "pref-filters", method: "printrulename", rule: dojo.formToJson(form)};

		xhrPost("backend.php", query, (transport) => {
			try {
				const li = dojo.create("li");

				const cb = dojo.create("input", {type: "checkbox"}, li);

				new dijit.form.CheckBox({
					onChange: function () {
						Lists.onRowChecked(this);
					},
				}, cb);

				dojo.create("input", {
					type: "hidden",
					name: "rule[]",
					value: dojo.formToJson(form)
				}, li);

				dojo.create("span", {
					onclick: function () {
						dijit.byId('filterEditDlg').editRule(this);
					},
					innerHTML: transport.responseText
				}, li);

				if (replaceNode) {
					parentNode.replaceChild(li, replaceNode);
				} else {
					parentNode.appendChild(li);
				}
			} catch (e) {
				App.Error.report(e);
			}
		});
	},
	createNewActionElement: function(parentNode, replaceNode) {
		const form = document.forms["filter_new_action_form"];

		if (form.action_id.value == 7) {
			form.action_param.value = form.action_param_label.value;
		} else if (form.action_id.value == 9) {
			form.action_param.value = form.action_param_plugin.value;
		}

		const query = {
			op: "pref-filters", method: "printactionname",
			action: dojo.formToJson(form)
		};

		xhrPost("backend.php", query, (transport) => {
			try {
				const li = dojo.create("li");

				const cb = dojo.create("input", {type: "checkbox"}, li);

				new dijit.form.CheckBox({
					onChange: function () {
						Lists.onRowChecked(this);
					},
				}, cb);

				dojo.create("input", {
					type: "hidden",
					name: "action[]",
					value: dojo.formToJson(form)
				}, li);

				dojo.create("span", {
					onclick: function () {
						dijit.byId('filterEditDlg').editAction(this);
					},
					innerHTML: transport.responseText
				}, li);

				if (replaceNode) {
					parentNode.replaceChild(li, replaceNode);
				} else {
					parentNode.appendChild(li);
				}

			} catch (e) {
				App.Error.report(e);
			}
		});
	},
	addFilterRule: function(replaceNode, ruleStr) {
		if (dijit.byId("filterNewRuleDlg"))
			dijit.byId("filterNewRuleDlg").destroyRecursive();

		const rule_dlg = new dijit.Dialog({
			id: "filterNewRuleDlg",
			title: ruleStr ? __("Edit rule") : __("Add rule"),
			execute: function () {
				if (this.validate()) {
					Filters.createNewRuleElement($("filterDlg_Matches"), replaceNode);
					this.hide();
				}
			},
			content: __('Loading, please wait...'),
		});

		const tmph = dojo.connect(rule_dlg, "onShow", null, function (/* e */) {
			dojo.disconnect(tmph);

			xhrPost("backend.php", {op: 'pref-filters', method: 'newrule', rule: ruleStr}, (transport) => {
				rule_dlg.attr('content', transport.responseText);
			});
		});

		rule_dlg.show();
	},
	addFilterAction: function(replaceNode, actionStr) {
		if (dijit.byId("filterNewActionDlg"))
			dijit.byId("filterNewActionDlg").destroyRecursive();

		const query = "backend.php?op=pref-filters&method=newaction&action=" +
			encodeURIComponent(actionStr);

		const rule_dlg = new dijit.Dialog({
			id: "filterNewActionDlg",
			title: actionStr ? __("Edit action") : __("Add action"),
			execute: function () {
				if (this.validate()) {
					Filters.createNewActionElement($("filterDlg_Actions"), replaceNode);
					this.hide();
				}
			},
			href: query
		});

		rule_dlg.show();
	},
	editFilterTest: function(params) {

		if (dijit.byId("filterTestDlg"))
			dijit.byId("filterTestDlg").destroyRecursive();

		const test_dlg = new dijit.Dialog({
			id: "filterTestDlg",
			title: "Test Filter",
			results: 0,
			limit: 100,
			max_offset: 10000,
			getTestResults: function (params, offset) {
				params.method = 'testFilterDo';
				params.offset = offset;
				params.limit = test_dlg.limit;

				console.log("getTestResults:" + offset);

				xhrPost("backend.php", params, (transport) => {
					try {
						const result = JSON.parse(transport.responseText);

						if (result && dijit.byId("filterTestDlg") && dijit.byId("filterTestDlg").open) {
							test_dlg.results += result.length;

							console.log("got results:" + result.length);

							$("prefFilterProgressMsg").innerHTML = __("Looking for articles (%d processed, %f found)...")
								.replace("%f", test_dlg.results)
								.replace("%d", offset);

							console.log(offset + " " + test_dlg.max_offset);

							for (let i = 0; i < result.length; i++) {
								const tmp = dojo.create("table", { innerHTML: result[i]});

								$("prefFilterTestResultList").innerHTML += tmp.innerHTML;
							}

							if (test_dlg.results < 30 && offset < test_dlg.max_offset) {

								// get the next batch
								window.setTimeout(function () {
									test_dlg.getTestResults(params, offset + test_dlg.limit);
								}, 0);

							} else {
								// all done

								Element.hide("prefFilterLoadingIndicator");

								if (test_dlg.results == 0) {
									$("prefFilterTestResultList").innerHTML = `<tr><td align='center'>
										${__('No recent articles matching this filter have been found.')}</td></tr>`;
									$("prefFilterProgressMsg").innerHTML = "Articles matching this filter:";
								} else {
									$("prefFilterProgressMsg").innerHTML = __("Found %d articles matching this filter:")
										.replace("%d", test_dlg.results);
								}

							}

						} else if (!result) {
							console.log("getTestResults: can't parse results object");

							Element.hide("prefFilterLoadingIndicator");

							Notify.error("Error while trying to get filter test results.");

						} else {
							console.log("getTestResults: dialog closed, bailing out.");
						}
					} catch (e) {
						App.Error.report(e);
					}

				});
			},
			content: `
				<div>
					<img id='prefFilterLoadingIndicator' src='images/indicator_tiny.gif'>&nbsp;
					<span id='prefFilterProgressMsg'>Looking for articles...</span>
				</div>

				<ul class='panel panel-scrollable list list-unstyled' id='prefFilterTestResultList'></ul>

				<footer class='text-center'>
					<button dojoType='dijit.form.Button' type='submit' class='alt-primary'>${__('Close this window')}</button>
				</footer>
			`
		});

		dojo.connect(test_dlg, "onShow", null, function (/* e */) {
			test_dlg.getTestResults(params, 0);
		});

		test_dlg.show();
	},
	quickAddFilter: function() {
		let query;

		if (!App.isPrefs()) {
			query = {
				op: "pref-filters", method: "newfilter",
				feed: Feeds.getActive(), is_cat: Feeds.activeIsCat()
			};
		} else {
			query = {op: "pref-filters", method: "newfilter"};
		}

		console.log('quickAddFilter', query);

		if (dijit.byId("feedEditDlg"))
			dijit.byId("feedEditDlg").destroyRecursive();

		if (dijit.byId("filterEditDlg"))
			dijit.byId("filterEditDlg").destroyRecursive();

		const dialog = new dijit.Dialog({
			id: "filterEditDlg",
			title: __("Create Filter"),
			test: function () {
				Filters.editFilterTest(dojo.formToObject("filter_new_form"));
			},
			selectRules: function (select) {
				Lists.select("filterDlg_Matches", select);
			},
			selectActions: function (select) {
				Lists.select("filterDlg_Actions", select);
			},
			editRule: function (e) {
				const li = e.parentNode;
				const rule = li.getElementsByTagName("INPUT")[1].value;
				Filters.addFilterRule(li, rule);
			},
			editAction: function (e) {
				const li = e.parentNode;
				const action = li.getElementsByTagName("INPUT")[1].value;
				Filters.addFilterAction(li, action);
			},
			addAction: function () {
				Filters.addFilterAction();
			},
			addRule: function () {
				Filters.addFilterRule();
			},
			deleteAction: function () {
				$$("#filterDlg_Actions li[class*=Selected]").each(function (e) {
					e.parentNode.removeChild(e)
				});
			},
			deleteRule: function () {
				$$("#filterDlg_Matches li[class*=Selected]").each(function (e) {
					e.parentNode.removeChild(e)
				});
			},
			execute: function () {
				if (this.validate()) {

					const query = dojo.formToQuery("filter_new_form");

					xhrPost("backend.php", query, () => {
						if (App.isPrefs()) {
							dijit.byId("filterTree").reload();
						}

						dialog.hide();
					});
				}
			},
			href: "backend.php?" + dojo.objectToQuery(query)
		});

		if (!App.isPrefs()) {
			/* global getSelectionText */
			const selectedText = getSelectionText();

			const lh = dojo.connect(dialog, "onLoad", function () {
				dojo.disconnect(lh);

				if (selectedText != "") {

					const feed_id = Feeds.activeIsCat() ? 'CAT:' + parseInt(Feeds.getActive()) :
						Feeds.getActive();

					const rule = {reg_exp: selectedText, feed_id: [feed_id], filter_type: 1};

					Filters.addFilterRule(null, dojo.toJson(rule));

				} else {

					const query = {op: "rpc", method: "getlinktitlebyid", id: Article.getActive()};

					xhrPost("backend.php", query, (transport) => {
						const reply = JSON.parse(transport.responseText);

						let title = false;

						if (reply && reply.title) title = reply.title;

						if (title || Feeds.getActive() || Feeds.activeIsCat()) {

							console.log(title + " " + Feeds.getActive());

							const feed_id = Feeds.activeIsCat() ? 'CAT:' + parseInt(Feeds.getActive()) :
								Feeds.getActive();

							const rule = {reg_exp: title, feed_id: [feed_id], filter_type: 1};

							Filters.addFilterRule(null, dojo.toJson(rule));
						}
					});
				}
			});
		}
		dialog.show();
	},
};