frappe.provide("erpnext.accounts");

frappe.pages['bank-reconciliation'].on_page_load = function(wrapper) {
	new erpnext.accounts.bankReconciliation(wrapper);
}

erpnext.accounts.bankReconciliation = class BankReconciliation {
	constructor(wrapper) {
		this.page = frappe.ui.make_app_page({
			parent: wrapper,
			title: __("Bank Reconciliation"),
			single_column: true
		});
		this.parent = wrapper;
		this.page = this.parent.page;

		this.check_plaid_status();
		this.make();
	}

	make() {
		const me = this;

		me.$main_section = $(`<div class="reconciliation page-main-content"></div>`).appendTo(me.page.main);
		const empty_state = __("Upload a bank statement, link or reconcile a bank account")
		me.$main_section.append(`<div class="flex justify-center align-center text-muted"
			style="height: 50vh; display: flex;"><h5 class="text-muted">${empty_state}</h5></div>`)

		me.page.add_field({
			fieldtype: 'Link',
			label: __('Company'),
			fieldname: 'company',
			options: "Company",
			onchange: function() {
				if (this.value) {
					me.company = this.value;
				} else {
					me.company = null;
					me.bank_account = null;
				}
			}
		})
		me.page.add_field({
			fieldtype: 'Link',
			label: __('Bank Account'),
			fieldname: 'bank_account',
			options: "Bank Account",
			get_query: function() {
				if(!me.company) {
					frappe.throw(__("Please select company first"));
					return
				}

				return {
					filters: {
						"company": me.company
					}
				}
			},
			onchange: function() {
				if (this.value) {
					me.bank_account = this.value;
					me.add_actions();
				} else {
					me.bank_account = null;
					me.page.hide_actions_menu();
				}
			}
		})
	}

	check_plaid_status() {
		const me = this;
		frappe.db.get_value("Plaid Settings", "Plaid Settings", "enabled", (r) => {
			if (r && r.enabled == "1") {
				me.plaid_status = "active"
			} else {
				me.plaid_status = "inactive"
			}
		})
	}

	add_actions() {
		const me = this;

		me.page.show_menu()

		me.page.add_menu_item(__("Upload a statement"), function() {
			me.clear_page_content();
			new erpnext.accounts.bankTransactionUpload(me);
		}, true)

		if (me.plaid_status==="active") {
			me.page.add_menu_item(__("Synchronize this account"), function() {
				me.clear_page_content();
				new erpnext.accounts.bankTransactionSync(me);
			}, true)
		}

		me.page.add_menu_item(__("Reconcile this account"), function() {
			me.clear_page_content();
			me.make_reconciliation_tool();
		}, true)
	}

	clear_page_content() {
		const me = this;
		$(me.page.body).find('.frappe-list').remove();
		me.$main_section.empty();
	}

	make_reconciliation_tool() {
		const me = this;
		frappe.model.with_doctype("Bank Transaction", () => {
			erpnext.accounts.ReconciliationList = new erpnext.accounts.ReconciliationTool({
				parent: me.parent,
				doctype: "Bank Transaction"
			});
		})
	}
}


erpnext.accounts.bankTransactionUpload = class bankTransactionUpload {
	constructor(parent) {
		this.parent = parent;
		this.data = [];

		const assets = [
			"/assets/frappe/css/frappe-datatable.css",
			"/assets/frappe/js/lib/clusterize.min.js",
			"/assets/frappe/js/lib/Sortable.min.js",
			"/assets/frappe/js/lib/frappe-datatable.js"
		];

		frappe.require(assets, () => {
			this.make();
		});
	}

	make() {
		const me = this;	
		new frappe.ui.FileUploader({
			method: 'erpnext.accounts.doctype.bank_transaction.bank_transaction_upload.upload_bank_statement',
			allow_multiple: 0,
			on_success: function(attachment, r) {
				if (!r.exc && r.message) {
					me.data = r.message;
					me.setup_transactions_dom();
					me.create_datatable();
					me.add_primary_action();
				}
			}
		})
	}

	setup_transactions_dom() {
		const me = this;
		me.parent.$main_section.append(`<div class="transactions-table"></div>`)
	}

	create_datatable() {
		try {
			this.datatable = new DataTable('.transactions-table', {
				columns: this.data.columns,
				data: this.data.data
			})
		}
		catch(err) {
			let msg = __(`Your file could not be processed by ERPNext.
						<br>It should be a standard CSV or XLSX file.
						<br>The headers should be in the first row.`)
			frappe.throw(msg)
		}

	}

	add_primary_action() {
		const me = this;
		me.parent.page.set_primary_action(__("Submit"), function() {
			me.add_bank_entries()
		}, null, __("Creating bank entries..."))
	}

	add_bank_entries() {
		const me = this;
		frappe.xcall('erpnext.accounts.doctype.bank_transaction.bank_transaction_upload.create_bank_entries',
			{columns: this.datatable.datamanager.columns, data: this.datatable.datamanager.data, bank_account: me.parent.bank_account}
		).then((result) => {
			let result_title = result.errors == 0 ? __("{0} bank transaction(s) created", [result.success]) : __("{0} bank transaction(s) created and {1} errors", [result.success, result.errors])
			let result_msg = `
				<div class="flex justify-center align-center text-muted" style="height: 50vh; display: flex;">
					<h5 class="text-muted">${result_title}</h5>
				</div>`
			me.parent.page.clear_primary_action();
			me.parent.$main_section.empty();
			me.parent.$main_section.append(result_msg);
			if (result.errors == 0) {
				frappe.show_alert({message:__("All bank transactions have been created"), indicator:'green'});
			} else {
				frappe.show_alert({message:__("Please check the error log for details about the import errors"), indicator:'red'});
			}
		})
	}
}

erpnext.accounts.bankTransactionSync = class bankTransactionSync {
	constructor(parent) {
		this.parent = parent;
		this.data = [];

		this.init_config()
	}

	init_config() {
		const me = this;
		frappe.xcall('erpnext.erpnext_integrations.doctype.plaid_settings.plaid_settings.plaid_configuration')
		.then(result => {
			me.plaid_env = result.plaid_env;
			me.plaid_public_key = result.plaid_public_key;
			me.client_name = result.client_name;
			me.sync_transactions()
		})
	}

	sync_transactions() {
		const me = this;
		frappe.db.get_value("Bank Account", me.parent.bank_account, "bank", (v) => {
			frappe.xcall('erpnext.erpnext_integrations.doctype.plaid_settings.plaid_settings.sync_transactions', {
				bank: v['bank'],
				bank_account: me.parent.bank_account,
				freeze: true
			})
			.then((result) => {
				let result_title = (result.length > 0) ? __("{0} bank transaction(s) created", [result.length]) : __("This bank account is already synchronized")
				let result_msg = `
					<div class="flex justify-center align-center text-muted" style="height: 50vh; display: flex;">
						<h5 class="text-muted">${result_title}</h5>
					</div>`
				this.parent.$main_section.append(result_msg)
				frappe.show_alert({message:__("Bank account '{0}' has been synchronized", [me.parent.bank_account]), indicator:'green'});
			})
		})
	}
}


erpnext.accounts.ReconciliationTool = class ReconciliationTool extends frappe.views.BaseList {
	constructor(opts) {
		super(opts);
		this.show();
	}

	setup_defaults() {
		super.setup_defaults();

		this.page_title = __("Bank Reconciliation");
		this.doctype = 'Bank Transaction';
		this.fields = ['date', 'description', 'debit', 'credit', 'currency']

	}

	setup_view() {
		this.render_header();
	}

	setup_side_bar() {
		//
	}

	make_standard_filters() {
		//
	}

	freeze() {
		this.$result.find('.list-count').html(`<span>${__('Refreshing')}...</span>`);
	}

	get_args() {
		const args = super.get_args();

		return Object.assign({}, args, {
			...args.filters.push(["Bank Transaction", "docstatus", "=", 1],
				["Bank Transaction", "unallocated_amount", ">", 0])
		});

	}

	update_data(r) {
		let data = r.message || [];

		if (this.start === 0) {
			this.data = data;
		} else {
			this.data = this.data.concat(data);
		}
	}

	render() {
		const me = this;
		this.$result.find('.list-row-container').remove();
		$('[data-fieldname="name"]').remove();
		me.data.map((value) => {
			const row = $('<div class="list-row-container">').data("data", value).appendTo(me.$result).get(0);
			new erpnext.accounts.ReconciliationRow(row, value);
		})
	}

	render_header() {
		const me = this;
		if ($(this.wrapper).find('.transaction-header').length === 0) {
			me.$result.append(frappe.render_template("bank_transaction_header"));
		}
	}
}

erpnext.accounts.ReconciliationRow = class ReconciliationRow {
	constructor(row, data) {
		this.data = data;
		this.row = row;
		this.make();
		this.bind_events();
	}

	make() {
		$(this.row).append(frappe.render_template("bank_transaction_row", this.data))
	}

	bind_events() {
		const me = this;
		$(me.row).on('click', '.clickable-section', function() {
			me.bank_entry = $(this).attr("data-name");
			me.show_dialog($(this).attr("data-name"));
		})

		$(me.row).on('click', '.new-reconciliation', function() {
			me.bank_entry = $(this).attr("data-name");
			me.show_dialog($(this).attr("data-name"));
		})

		$(me.row).on('click', '.new-payment', function() {
			me.bank_entry = $(this).attr("data-name");
			me.new_payment();
		})

		$(me.row).on('click', '.new-invoice', function() {
			me.bank_entry = $(this).attr("data-name");
			me.new_invoice();
		})

		$(me.row).on('click', '.new-expense', function() {
			me.bank_entry = $(this).attr("data-name");
			me.new_expense();
		})
	}

	new_payment() {
		const me = this;
		const paid_amount = me.data.credit > 0 ? me.data.credit : me.data.debit;
		const payment_type = me.data.credit > 0 ? "Receive": "Pay";
		const party_type = me.data.credit > 0 ? "Customer": "Supplier";

		frappe.new_doc("Payment Entry", {"payment_type": payment_type, "paid_amount": paid_amount,
			"party_type": party_type, "paid_from": me.data.bank_account})
	}

	new_invoice() {
		const me = this;
		const invoice_type = me.data.credit > 0 ? "Sales Invoice" : "Purchase Invoice";

		frappe.new_doc(invoice_type)
	}

	new_expense() {
		frappe.new_doc("Expense Claim")
	}


	show_dialog(data) {
		const me = this;

		frappe.db.get_value("Bank Account", me.data.bank_account, "account", (r) => {
			me.gl_account = r.account;
		})

		frappe.xcall('erpnext.accounts.page.bank_reconciliation.bank_reconciliation.get_linked_payments',
			{bank_transaction: data, freeze:true, freeze_message:__("Finding linked payments")}
		).then((result) => {
			me.make_dialog(result)
		})
	}

	make_dialog(data) {
		const me = this;
		me.selected_payment = null;

		const fields = [
			{
				fieldtype: 'Section Break',
				fieldname: 'section_break_1',
				label: __('Automatic Reconciliation')
			},
			{
				fieldtype: 'HTML',
				fieldname: 'payment_proposals'
			},
			{
				fieldtype: 'Section Break',
				fieldname: 'section_break_2',
				label: __('Search for a payment')
			},
			{
				fieldtype: 'Link',
				fieldname: 'payment_doctype',
				options: 'DocType',
				label: 'Payment DocType',
				get_query: () => {
					return {
						filters : {
							"name": ["in", ["Payment Entry", "Journal Entry", "Sales Invoice", "Purchase Invoice", "Expense Claim"]]
						}
					}
				},
			},
			{
				fieldtype: 'Column Break',
				fieldname: 'column_break_1',
			},
			{
				fieldtype: 'Dynamic Link',
				fieldname: 'payment_entry',
				options: 'payment_doctype',
				label: 'Payment Document',
				get_query: () => {
					let dt = this.dialog.fields_dict.payment_doctype.value;
					if (dt === "Payment Entry") {
						return {
							query: "erpnext.accounts.page.bank_reconciliation.bank_reconciliation.payment_entry_query",
							filters : {
								"bank_account": this.data.bank_account,
								"company": this.data.company
							}
						}
					} else if (dt === "Journal Entry") {
						return {
							query: "erpnext.accounts.page.bank_reconciliation.bank_reconciliation.journal_entry_query",
							filters : {
								"bank_account": this.data.bank_account,
								"company": this.data.company
							}
						}
					} else if (dt === "Sales Invoice") {
						return {
							query: "erpnext.accounts.page.bank_reconciliation.bank_reconciliation.sales_invoices_query"
						}
					} else if (dt === "Purchase Invoice") {
						return {
							filters : [
								["Purchase Invoice", "ifnull(clearance_date, '')", "=", ""],
								["Purchase Invoice", "docstatus", "=", 1],
								["Purchase Invoice", "company", "=", this.data.company]
							]
						}
					} else if (dt === "Expense Claim") {
						return {
							filters : [
								["Expense Claim", "ifnull(clearance_date, '')", "=", ""],
								["Expense Claim", "docstatus", "=", 1],
								["Expense Claim", "company", "=", this.data.company]
							]
						}
					}
				},
				onchange: function() {
					if (me.selected_payment !== this.value) {
						me.selected_payment = this.value;
						me.display_payment_details(this);
					}
				}
			},
			{
				fieldtype: 'Section Break',
				fieldname: 'section_break_3'
			},
			{
				fieldtype: 'HTML',
				fieldname: 'payment_details'
			},
		];

		me.dialog = new frappe.ui.Dialog({
			title: __("Choose a corresponding payment"),
			fields: fields,
			size: "large"
		});

		const proposals_wrapper = me.dialog.fields_dict.payment_proposals.$wrapper;
		if (data && data.length > 0) {
			proposals_wrapper.append(frappe.render_template("linked_payment_header"));
			data.map(value => {
				proposals_wrapper.append(frappe.render_template("linked_payment_row", value))
			})
		} else {
			const empty_data_msg = __("ERPNext could not find any matching payment entry")
			proposals_wrapper.append(`<div class="text-center"><h5 class="text-muted">${empty_data_msg}</h5></div>`)
		}

		$(me.dialog.body).on('click', '.reconciliation-btn', (e) => {
			const payment_entry = $(e.target).attr('data-name');
			const payment_doctype = $(e.target).attr('data-doctype');
			frappe.xcall('erpnext.accounts.page.bank_reconciliation.bank_reconciliation.reconcile',
				{bank_transaction: me.bank_entry, payment_doctype: payment_doctype, payment_name: payment_entry})
			.then((result) => {
				setTimeout(function(){
					erpnext.accounts.ReconciliationList.refresh();
				}, 2000);
				me.dialog.hide();
			})
		})

		me.dialog.show();
	}

	display_payment_details(event) {
		const me = this;
		if (event.value) {
			let dt = me.dialog.fields_dict.payment_doctype.value;
			me.dialog.fields_dict['payment_details'].$wrapper.empty();
			frappe.db.get_doc(dt, event.value)
			.then(doc => {
				let displayed_docs = []
				let payment = []
				if (dt === "Payment Entry") {
					payment.currency = doc.payment_type == "Receive" ? doc.paid_to_account_currency : doc.paid_from_account_currency;
					payment.doctype = dt
					payment.posting_date = doc.posting_date;
					payment.party = doc.party;
					payment.reference_no = doc.reference_no;
					payment.reference_date = doc.reference_date;
					payment.paid_amount = doc.paid_amount;
					payment.name = doc.name;
					displayed_docs.push(payment);
				} else if (dt === "Journal Entry") {
					doc.accounts.forEach(payment => {
						if (payment.account === me.gl_account) {
							payment.doctype = dt;
							payment.posting_date = doc.posting_date;
							payment.party = doc.pay_to_recd_from;
							payment.reference_no = doc.cheque_no;
							payment.reference_date = doc.cheque_date;
							payment.currency = payment.account_currency;
							payment.paid_amount = payment.credit > 0 ? payment.credit : payment.debit;
							payment.name = doc.name;
							displayed_docs.push(payment);
						}
					})
				} else if (dt === "Sales Invoice") {
					doc.payments.forEach(payment => {
						if (payment.clearance_date === null || payment.clearance_date === "") {
							payment.doctype = dt;
							payment.posting_date = doc.posting_date;
							payment.party = doc.customer;
							payment.reference_no = doc.remarks;
							payment.currency = doc.currency;
							payment.paid_amount = payment.amount;
							payment.name = doc.name;
							displayed_docs.push(payment);
						}
					})
				}

				const details_wrapper = me.dialog.fields_dict.payment_details.$wrapper;
				details_wrapper.append(frappe.render_template("linked_payment_header"));
				displayed_docs.forEach(payment => {
					details_wrapper.append(frappe.render_template("linked_payment_row", payment));
				})
			})
		}

	}
}