brotherton-erpnext/erpnext/public/js/controllers/taxes_and_totals.js
2015-08-31 19:01:11 +05:30

536 lines
19 KiB
JavaScript

// Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
// License: GNU General Public License v3. See license.txt
frappe.provide("erpnext");
frappe.require("assets/erpnext/js/controllers/stock_controller.js");
erpnext.taxes_and_totals = erpnext.stock.StockController.extend({
calculate_taxes_and_totals: function(update_paid_amount) {
this.discount_amount_applied = false;
this._calculate_taxes_and_totals();
if (frappe.meta.get_docfield(this.frm.doc.doctype, "discount_amount"))
this.apply_discount_amount();
// Advance calculation applicable to Sales /Purchase Invoice
if(in_list(["Sales Invoice", "Purchase Invoice"], this.frm.doc.doctype)
&& this.frm.doc.docstatus < 2 && !this.frm.doc.is_return) {
this.calculate_total_advance(update_paid_amount);
}
// Sales person's commission
if(in_list(["Quotation", "Sales Order", "Delivery Note", "Sales Invoice"], this.frm.doc.doctype)) {
this.calculate_commission();
this.calculate_contribution();
}
this.frm.refresh_fields();
},
_calculate_taxes_and_totals: function() {
this.validate_conversion_rate();
this.calculate_item_values();
this.initialize_taxes();
this.determine_exclusive_rate();
this.calculate_net_total();
this.calculate_taxes();
this.manipulate_grand_total_for_inclusive_tax();
this.calculate_totals();
this._cleanup();
this.show_item_wise_taxes();
},
validate_conversion_rate: function() {
this.frm.doc.conversion_rate = flt(this.frm.doc.conversion_rate, precision("conversion_rate"));
var conversion_rate_label = frappe.meta.get_label(this.frm.doc.doctype, "conversion_rate",
this.frm.doc.name);
var company_currency = this.get_company_currency();
if(!this.frm.doc.conversion_rate) {
if(this.frm.doc.currency == company_currency) {
this.frm.set_value("conversion_rate", 1);
} else {
frappe.throw(repl('%(conversion_rate_label)s' +
__(' is mandatory. Maybe Currency Exchange record is not created for ') +
'%(from_currency)s' + __(" to ") + '%(to_currency)s',
{
"conversion_rate_label": conversion_rate_label,
"from_currency": this.frm.doc.currency,
"to_currency": company_currency
}));
}
}
},
calculate_item_values: function() {
var me = this;
if (!this.discount_amount_applied) {
$.each(this.frm.doc["items"] || [], function(i, item) {
frappe.model.round_floats_in(item);
item.net_rate = item.rate;
item.amount = flt(item.rate * item.qty, precision("amount", item));
item.net_amount = item.amount;
item.item_tax_amount = 0.0;
me.set_in_company_currency(item, ["price_list_rate", "rate", "amount", "net_rate", "net_amount"]);
});
}
},
set_in_company_currency: function(doc, fields) {
var me = this;
$.each(fields, function(i, f) {
doc["base_"+f] = flt(flt(doc[f], precision(f, doc)) * me.frm.doc.conversion_rate, precision("base_" + f, doc));
})
},
initialize_taxes: function() {
var me = this;
$.each(this.frm.doc["taxes"] || [], function(i, tax) {
tax.item_wise_tax_detail = {};
tax_fields = ["total", "tax_amount_after_discount_amount",
"tax_amount_for_current_item", "grand_total_for_current_item",
"tax_fraction_for_current_item", "grand_total_fraction_for_current_item"]
if (cstr(tax.charge_type) != "Actual" &&
!(me.discount_amount_applied && me.frm.doc.apply_discount_on=="Grand Total"))
tax_fields.push("tax_amount");
$.each(tax_fields, function(i, fieldname) { tax[fieldname] = 0.0 });
if (!this.discount_amount_applied) {
cur_frm.cscript.validate_taxes_and_charges(tax.doctype, tax.name);
me.validate_inclusive_tax(tax);
}
frappe.model.round_floats_in(tax);
});
},
determine_exclusive_rate: function() {
var me = this;
var has_inclusive_tax = false;
$.each(me.frm.doc["taxes"] || [], function(i, row) {
if(cint(row.included_in_print_rate)) has_inclusive_tax = true;
})
if(has_inclusive_tax==false) return;
$.each(me.frm.doc["items"] || [], function(n, item) {
var item_tax_map = me._load_item_tax_rate(item.item_tax_rate);
var cumulated_tax_fraction = 0.0;
$.each(me.frm.doc["taxes"] || [], function(i, tax) {
tax.tax_fraction_for_current_item = me.get_current_tax_fraction(tax, item_tax_map);
if(i==0) {
tax.grand_total_fraction_for_current_item = 1 + tax.tax_fraction_for_current_item;
} else {
tax.grand_total_fraction_for_current_item =
me.frm.doc["taxes"][i-1].grand_total_fraction_for_current_item +
tax.tax_fraction_for_current_item;
}
cumulated_tax_fraction += tax.tax_fraction_for_current_item;
});
if(cumulated_tax_fraction && !me.discount_amount_applied) {
item.net_amount = flt(item.amount / (1 + cumulated_tax_fraction), precision("net_amount", item));
item.net_rate = flt(item.net_amount / item.qty, precision("net_rate", item));
me.set_in_company_currency(item, ["net_rate", "net_amount"]);
}
});
},
get_current_tax_fraction: function(tax, item_tax_map) {
// Get tax fraction for calculating tax exclusive amount
// from tax inclusive amount
var current_tax_fraction = 0.0;
if(cint(tax.included_in_print_rate)) {
var tax_rate = this._get_tax_rate(tax, item_tax_map);
if(tax.charge_type == "On Net Total") {
current_tax_fraction = (tax_rate / 100.0);
} else if(tax.charge_type == "On Previous Row Amount") {
current_tax_fraction = (tax_rate / 100.0) *
this.frm.doc["taxes"][cint(tax.row_id) - 1].tax_fraction_for_current_item;
} else if(tax.charge_type == "On Previous Row Total") {
current_tax_fraction = (tax_rate / 100.0) *
this.frm.doc["taxes"][cint(tax.row_id) - 1].grand_total_fraction_for_current_item;
}
}
if(tax.add_deduct_tax) {
current_tax_fraction *= (tax.add_deduct_tax == "Deduct") ? -1.0 : 1.0;
}
return current_tax_fraction;
},
_get_tax_rate: function(tax, item_tax_map) {
return (keys(item_tax_map).indexOf(tax.account_head) != -1) ?
flt(item_tax_map[tax.account_head], precision("rate", tax)) : tax.rate;
},
calculate_net_total: function() {
var me = this;
this.frm.doc.total = this.frm.doc.base_total = this.frm.doc.net_total = this.frm.doc.base_net_total = 0.0;
$.each(this.frm.doc["items"] || [], function(i, item) {
me.frm.doc.total += item.amount;
me.frm.doc.base_total += item.base_amount;
me.frm.doc.net_total += item.net_amount;
me.frm.doc.base_net_total += item.base_net_amount;
});
frappe.model.round_floats_in(this.frm.doc, ["total", "base_total", "net_total", "base_net_total"]);
},
calculate_taxes: function() {
var me = this;
var actual_tax_dict = {};
// maintain actual tax rate based on idx
$.each(this.frm.doc["taxes"] || [], function(i, tax) {
if (tax.charge_type == "Actual") {
actual_tax_dict[tax.idx] = flt(tax.tax_amount, precision("tax_amount", tax));
}
});
$.each(this.frm.doc["items"] || [], function(n, item) {
var item_tax_map = me._load_item_tax_rate(item.item_tax_rate);
$.each(me.frm.doc["taxes"] || [], function(i, tax) {
// tax_amount represents the amount of tax for the current step
var current_tax_amount = me.get_current_tax_amount(item, tax, item_tax_map);
// Adjust divisional loss to the last item
if (tax.charge_type == "Actual") {
actual_tax_dict[tax.idx] -= current_tax_amount;
if (n == me.frm.doc["items"].length - 1) {
current_tax_amount += actual_tax_dict[tax.idx]
}
}
// accumulate tax amount into tax.tax_amount
if (tax.charge_type != "Actual" &&
!(me.discount_amount_applied && me.frm.doc.apply_discount_on=="Grand Total"))
tax.tax_amount += current_tax_amount;
// store tax_amount for current item as it will be used for
// charge type = 'On Previous Row Amount'
tax.tax_amount_for_current_item = current_tax_amount;
// tax amount after discount amount
tax.tax_amount_after_discount_amount += current_tax_amount;
// for buying
if(tax.category) {
// if just for valuation, do not add the tax amount in total
// hence, setting it as 0 for further steps
current_tax_amount = (tax.category == "Valuation") ? 0.0 : current_tax_amount;
current_tax_amount *= (tax.add_deduct_tax == "Deduct") ? -1.0 : 1.0;
}
// Calculate tax.total viz. grand total till that step
// note: grand_total_for_current_item contains the contribution of
// item's amount, previously applied tax and the current tax on that item
if(i==0) {
tax.grand_total_for_current_item = flt(item.net_amount + current_tax_amount, precision("total", tax));
} else {
tax.grand_total_for_current_item =
flt(me.frm.doc["taxes"][i-1].grand_total_for_current_item + current_tax_amount, precision("total", tax));
}
// in tax.total, accumulate grand total for each item
tax.total += tax.grand_total_for_current_item;
// set precision in the last item iteration
if (n == me.frm.doc["items"].length - 1) {
me.round_off_totals(tax);
// adjust Discount Amount loss in last tax iteration
if ((i == me.frm.doc["taxes"].length - 1) && me.discount_amount_applied
&& me.frm.doc.apply_discount_on == "Grand Total" && me.frm.doc.discount_amount)
me.adjust_discount_amount_loss(tax);
}
});
});
},
_load_item_tax_rate: function(item_tax_rate) {
return item_tax_rate ? JSON.parse(item_tax_rate) : {};
},
get_current_tax_amount: function(item, tax, item_tax_map) {
var tax_rate = this._get_tax_rate(tax, item_tax_map);
var current_tax_amount = 0.0;
if(tax.charge_type == "Actual") {
// distribute the tax amount proportionally to each item row
var actual = flt(tax.tax_amount, precision("tax_amount", tax));
current_tax_amount = this.frm.doc.net_total ?
((item.net_amount / this.frm.doc.net_total) * actual) : 0.0;
} else if(tax.charge_type == "On Net Total") {
current_tax_amount = (tax_rate / 100.0) * item.net_amount;
} else if(tax.charge_type == "On Previous Row Amount") {
current_tax_amount = (tax_rate / 100.0) *
this.frm.doc["taxes"][cint(tax.row_id) - 1].tax_amount_for_current_item;
} else if(tax.charge_type == "On Previous Row Total") {
current_tax_amount = (tax_rate / 100.0) *
this.frm.doc["taxes"][cint(tax.row_id) - 1].grand_total_for_current_item;
}
current_tax_amount = flt(current_tax_amount, precision("tax_amount", tax));
this.set_item_wise_tax(item, tax, tax_rate, current_tax_amount);
return current_tax_amount;
},
set_item_wise_tax: function(item, tax, tax_rate, current_tax_amount) {
// store tax breakup for each item
var key = item.item_code || item.item_name;
var item_wise_tax_amount = current_tax_amount * this.frm.doc.conversion_rate;
if (tax.item_wise_tax_detail && tax.item_wise_tax_detail[key])
item_wise_tax_amount += tax.item_wise_tax_detail[key][1]
tax.item_wise_tax_detail[key] = [tax_rate,flt(item_wise_tax_amount, precision("base_tax_amount", tax))]
},
round_off_totals: function(tax) {
tax.total = flt(tax.total, precision("total", tax));
tax.tax_amount = flt(tax.tax_amount, precision("tax_amount", tax));
tax.tax_amount_after_discount_amount = flt(tax.tax_amount_after_discount_amount, precision("tax_amount", tax));
this.set_in_company_currency(tax, ["total", "tax_amount", "tax_amount_after_discount_amount"]);
},
adjust_discount_amount_loss: function(tax) {
var discount_amount_loss = this.frm.doc.grand_total - flt(this.frm.doc.discount_amount) - tax.total;
tax.tax_amount_after_discount_amount = flt(tax.tax_amount_after_discount_amount +
discount_amount_loss, precision("tax_amount", tax));
tax.total = flt(tax.total + discount_amount_loss, precision("total", tax));
this.set_in_company_currency(tax, ["total", "tax_amount_after_discount_amount"]);
},
manipulate_grand_total_for_inclusive_tax: function() {
var me = this;
// if fully inclusive taxes and diff
if (this.frm.doc["taxes"] && this.frm.doc["taxes"].length) {
var all_inclusive = frappe.utils.all(this.frm.doc["taxes"].map(function(d) {
return cint(d.included_in_print_rate);
}));
if (all_inclusive) {
var last_tax = me.frm.doc["taxes"].slice(-1)[0];
var diff = me.frm.doc.total - flt(last_tax.total, precision("grand_total"));
if ( diff && Math.abs(diff) <= (2.0 / Math.pow(10, precision("tax_amount", last_tax))) ) {
last_tax.tax_amount += diff;
last_tax.tax_amount_after_discount += diff;
last_tax.total += diff;
this.set_in_company_currency(last_tax,
["total", "tax_amount", "tax_amount_after_discount_amount"]);
}
}
}
},
calculate_totals: function() {
// Changing sequence can cause roundiing issue and on-screen discrepency
var me = this;
var tax_count = this.frm.doc["taxes"] ? this.frm.doc["taxes"].length : 0;
this.frm.doc.grand_total = flt(tax_count ? this.frm.doc["taxes"][tax_count - 1].total : this.frm.doc.net_total);
if(in_list(["Quotation", "Sales Order", "Delivery Note", "Sales Invoice"], this.frm.doc.doctype)) {
this.frm.doc.base_grand_total = (this.frm.doc.total_taxes_and_charges) ?
flt(this.frm.doc.grand_total * this.frm.doc.conversion_rate) : this.frm.doc.base_net_total;
} else {
// other charges added/deducted
this.frm.doc.taxes_and_charges_added = this.frm.doc.taxes_and_charges_deducted = 0.0;
if(tax_count) {
$.each(this.frm.doc["taxes"] || [], function(i, tax) {
if (in_list(["Valuation and Total", "Total"], tax.category)) {
if(tax.add_deduct_tax == "Add") {
me.frm.doc.taxes_and_charges_added += flt(tax.tax_amount_after_discount_amount);
} else {
me.frm.doc.taxes_and_charges_deducted += flt(tax.tax_amount_after_discount_amount);
}
}
})
frappe.model.round_floats_in(this.frm.doc, ["taxes_and_charges_added", "taxes_and_charges_deducted"]);
}
this.frm.doc.base_grand_total = flt((this.frm.doc.taxes_and_charges_added || this.frm.doc.taxes_and_charges_deducted) ?
flt(this.frm.doc.grand_total * this.frm.doc.conversion_rate) : this.frm.doc.base_net_total);
this.set_in_company_currency(this.frm.doc, ["taxes_and_charges_added", "taxes_and_charges_deducted"]);
}
this.frm.doc.total_taxes_and_charges = flt(this.frm.doc.grand_total - this.frm.doc.net_total,
precision("total_taxes_and_charges"));
this.set_in_company_currency(this.frm.doc, ["total_taxes_and_charges"]);
// Round grand total as per precision
frappe.model.round_floats_in(this.frm.doc, ["grand_total", "base_grand_total"]);
// rounded totals
if(frappe.meta.get_docfield(this.frm.doc.doctype, "rounded_total", this.frm.doc.name)) {
this.frm.doc.rounded_total = Math.round(this.frm.doc.grand_total);
}
if(frappe.meta.get_docfield(this.frm.doc.doctype, "base_rounded_total", this.frm.doc.name)) {
this.frm.doc.base_rounded_total = Math.round(this.frm.doc.base_grand_total);
}
},
_cleanup: function() {
this.frm.doc.base_in_words = this.frm.doc.in_words = "";
if(this.frm.doc["items"] && this.frm.doc["items"].length) {
if(!frappe.meta.get_docfield(this.frm.doc["items"][0].doctype, "item_tax_amount", this.frm.doctype)) {
$.each(this.frm.doc["items"] || [], function(i, item) {
delete item["item_tax_amount"];
});
}
}
if(this.frm.doc["taxes"] && this.frm.doc["taxes"].length) {
var temporary_fields = ["tax_amount_for_current_item", "grand_total_for_current_item",
"tax_fraction_for_current_item", "grand_total_fraction_for_current_item"]
if(!frappe.meta.get_docfield(this.frm.doc["taxes"][0].doctype, "tax_amount_after_discount_amount", this.frm.doctype)) {
temporary_fields.push("tax_amount_after_discount_amount");
}
$.each(this.frm.doc["taxes"] || [], function(i, tax) {
$.each(temporary_fields, function(i, fieldname) {
delete tax[fieldname];
});
tax.item_wise_tax_detail = JSON.stringify(tax.item_wise_tax_detail);
});
}
},
apply_discount_amount: function() {
var me = this;
var distributed_amount = 0.0;
if (this.frm.doc.discount_amount) {
if(!this.frm.doc.apply_discount_on)
frappe.throw(__("Please select Apply Discount On"));
this.frm.set_value("base_discount_amount",
flt(this.frm.doc.discount_amount * this.frm.doc.conversion_rate, precision("base_discount_amount")))
var total_for_discount_amount = this.get_total_for_discount_amount();
// calculate item amount after Discount Amount
if (total_for_discount_amount) {
$.each(this.frm.doc["items"] || [], function(i, item) {
distributed_amount = flt(me.frm.doc.discount_amount) * item.net_amount / total_for_discount_amount;
item.net_amount = flt(item.net_amount - distributed_amount, precision("base_amount", item));
item.net_rate = flt(item.net_amount / item.qty, precision("net_rate", item));
me.set_in_company_currency(item, ["net_rate", "net_amount"]);
});
this.discount_amount_applied = true;
this._calculate_taxes_and_totals();
}
} else {
this.frm.set_value("base_discount_amount", 0);
}
},
get_total_for_discount_amount: function() {
var me = this;
if(this.frm.doc.apply_discount_on == "Net Total") {
return this.frm.doc.net_total
} else {
var total_actual_tax = 0.0;
var actual_taxes_dict = {};
$.each(this.frm.doc["taxes"] || [], function(i, tax) {
if (tax.charge_type == "Actual")
actual_taxes_dict[tax.idx] = tax.tax_amount;
else if (actual_taxes_dict[tax.row_id] !== null) {
actual_tax_amount = flt(actual_taxes_dict[tax.row_id]) * flt(tax.rate) / 100;
actual_taxes_dict[tax.idx] = actual_tax_amount;
}
});
$.each(actual_taxes_dict, function(key, value) {
if (value) total_actual_tax += value;
});
return flt(this.frm.doc.grand_total - total_actual_tax, precision("grand_total"));
}
},
calculate_total_advance: function(update_paid_amount) {
var total_allocated_amount = frappe.utils.sum($.map(this.frm.doc["advances"] || [], function(adv) {
return flt(adv.allocated_amount, precision("allocated_amount", adv))
}));
this.frm.doc.total_advance = flt(total_allocated_amount, precision("total_advance"));
this.calculate_outstanding_amount(update_paid_amount);
},
calculate_outstanding_amount: function(update_paid_amount) {
// NOTE:
// paid_amount and write_off_amount is only for POS Invoice
// total_advance is only for non POS Invoice
if(this.frm.doc.is_return || this.frm.doc.docstatus > 0) return;
frappe.model.round_floats_in(this.frm.doc, ["grand_total", "total_advance", "write_off_amount"]);
var total_amount_to_pay = flt((this.frm.doc.grand_total - this.frm.doc.total_advance
- this.frm.doc.write_off_amount), precision("grand_total"));
if(this.frm.doc.doctype == "Sales Invoice") {
frappe.model.round_floats_in(this.frm.doc, ["paid_amount"]);
if(this.frm.doc.is_pos) {
if(!this.frm.doc.paid_amount || update_paid_amount===undefined || update_paid_amount) {
this.frm.doc.paid_amount = flt(total_amount_to_pay);
}
} else {
this.frm.doc.paid_amount = 0
}
this.set_in_company_currency(this.frm.doc, ["paid_amount"]);
this.frm.refresh_field("paid_amount");
this.frm.refresh_field("base_paid_amount");
var outstanding_amount = flt(total_amount_to_pay - this.frm.doc.paid_amount,
precision("outstanding_amount"));
} else if(this.frm.doc.doctype == "Purchase Invoice") {
var outstanding_amount = flt(total_amount_to_pay, precision("outstanding_amount"));
}
if(this.frm.doc.party_account_currency == this.frm.doc.currency) {
this.frm.set_value("outstanding_amount", outstanding_amount);
} else {
this.frm.set_value("outstanding_amount",
flt(outstanding_amount * this.frm.doc.conversion_rate, precision("outstanding_amount")));
}
}
})