numerus/pkg/invoices.go

843 lines
27 KiB
Go

package pkg
import (
"archive/zip"
"bytes"
"context"
"errors"
"fmt"
"github.com/julienschmidt/httprouter"
"html/template"
"io"
"log"
"math"
"net/http"
"os"
"os/exec"
"regexp"
"sort"
"strconv"
"strings"
"time"
)
type InvoiceEntry struct {
Slug string
Date time.Time
Number string
Total string
CustomerName string
CustomerSlug string
Tags []string
Status string
StatusLabel string
}
type InvoicesIndexPage struct {
Invoices []*InvoiceEntry
InvoiceStatuses map[string]string
}
func IndexInvoices(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
conn := getConn(r)
locale := getLocale(r)
tag := r.URL.Query().Get("tag")
page := &InvoicesIndexPage{
Invoices: mustCollectInvoiceEntries(r.Context(), conn, mustGetCompany(r), locale, tag),
InvoiceStatuses: mustCollectInvoiceStatuses(r.Context(), conn, locale),
}
mustRenderAppTemplate(w, r, "invoices/index.gohtml", page)
}
func mustCollectInvoiceEntries(ctx context.Context, conn *Conn, company *Company, locale *Locale, tag string) []*InvoiceEntry {
rows := conn.MustQuery(ctx, `
select invoice.slug
, invoice_date
, invoice_number
, contact.business_name
, contact.slug
, array_agg(coalesce(tag.name::text, ''))
, invoice.invoice_status
, isi18n.name
, to_price(total, decimal_digits)
from invoice
left join invoice_tag using (invoice_id)
left join tag using(tag_id)
join contact using (contact_id)
join invoice_status_i18n isi18n on invoice.invoice_status = isi18n.invoice_status and isi18n.lang_tag = $2
join invoice_amount using (invoice_id)
join currency using (currency_code)
where invoice.company_id = $1 and (($3 = '') or (tag.name = $3))
group by invoice.slug
, invoice_date
, invoice_number
, contact.business_name
, contact.slug
, invoice.invoice_status
, isi18n.name
, total
, decimal_digits
order by invoice_date desc
, invoice_number desc
`, company.Id, locale.Language.String(), tag)
defer rows.Close()
var entries []*InvoiceEntry
for rows.Next() {
entry := &InvoiceEntry{}
if err := rows.Scan(&entry.Slug, &entry.Date, &entry.Number, &entry.CustomerName, &entry.CustomerSlug, &entry.Tags, &entry.Status, &entry.StatusLabel, &entry.Total); err != nil {
panic(err)
}
entries = append(entries, entry)
}
if rows.Err() != nil {
panic(rows.Err())
}
return entries
}
func mustCollectInvoiceStatuses(ctx context.Context, conn *Conn, locale *Locale) map[string]string {
rows := conn.MustQuery(ctx, "select invoice_status.invoice_status, isi18n.name from invoice_status join invoice_status_i18n isi18n using(invoice_status) where isi18n.lang_tag = $1 order by invoice_status", locale.Language.String())
defer rows.Close()
statuses := map[string]string{}
for rows.Next() {
var key, name string
if err := rows.Scan(&key, &name); err != nil {
panic(err)
}
statuses[key] = name
}
if rows.Err() != nil {
panic(rows.Err())
}
return statuses
}
func ServeInvoice(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
conn := getConn(r)
company := mustGetCompany(r)
slug := params[0].Value
if slug == "new" {
locale := getLocale(r)
form := newInvoiceForm(r.Context(), conn, locale, company)
if invoiceToDuplicate := r.URL.Query().Get("duplicate"); invoiceToDuplicate != "" {
form.MustFillFromDatabase(r.Context(), conn, invoiceToDuplicate)
form.InvoiceStatus.Selected = []string{"created"}
form.Number.Val = ""
}
form.Date.Val = time.Now().Format("2006-01-02")
w.WriteHeader(http.StatusOK)
mustRenderNewInvoiceForm(w, r, form)
return
}
pdf := false
if strings.HasSuffix(slug, ".pdf") {
pdf = true
slug = slug[:len(slug)-len(".pdf")]
}
inv := mustGetInvoice(r.Context(), conn, company, slug)
if inv == nil {
http.NotFound(w, r)
return
}
if pdf {
w.Header().Set("Content-Type", "application/pdf")
mustWriteInvoicePdf(w, r, inv)
} else {
mustRenderAppTemplate(w, r, "invoices/view.gohtml", inv)
}
}
func mustWriteInvoicePdf(w io.Writer, r *http.Request, inv *invoice) {
cmd := exec.Command("weasyprint", "--format", "pdf", "--stylesheet", "web/static/invoice.css", "-", "-")
var stderr bytes.Buffer
cmd.Stderr = &stderr
stdin, err := cmd.StdinPipe()
if err != nil {
panic(err)
}
stdout, err := cmd.StdoutPipe()
if err != nil {
panic(err)
}
defer func() {
err := stdout.Close()
if !errors.Is(err, os.ErrClosed) {
panic(err)
}
}()
if err = cmd.Start(); err != nil {
panic(err)
}
go func() {
defer mustClose(stdin)
mustRenderAppTemplate(stdin, r, "invoices/view.gohtml", inv)
}()
if _, err = io.Copy(w, stdout); err != nil {
panic(err)
}
if err := cmd.Wait(); err != nil {
log.Printf("ERR - %v\n", stderr.String())
panic(err)
}
}
func mustClose(closer io.Closer) {
if err := closer.Close(); err != nil {
panic(err)
}
}
type invoice struct {
Number string
Slug string
Date time.Time
Invoicer taxDetails
Invoicee taxDetails
Notes string
PaymentInstructions string
Products []*invoiceProduct
Subtotal string
Taxes [][]string
TaxClasses []string
HasDiscounts bool
Total string
LegalDisclaimer string
}
type taxDetails struct {
Name string
VATIN string
Address string
City string
PostalCode string
Province string
Email string
Phone string
}
type invoiceProduct struct {
Name string
Description string
Price string
Discount int
Quantity int
Taxes map[string]int
Subtotal string
Total string
}
func mustGetInvoice(ctx context.Context, conn *Conn, company *Company, slug string) *invoice {
inv := &invoice{
Slug: slug,
}
var invoiceId int
var decimalDigits int
if notFoundErrorOrPanic(conn.QueryRow(ctx, "select invoice_id, decimal_digits, invoice_number, invoice_date, notes, instructions, business_name, vatin, phone, email, address, city, province, postal_code, to_price(subtotal, decimal_digits), to_price(total, decimal_digits) from invoice join payment_method using (payment_method_id) join contact using (contact_id) join invoice_amount using (invoice_id) join currency using (currency_code) where invoice.slug = $1", slug).Scan(&invoiceId, &decimalDigits, &inv.Number, &inv.Date, &inv.Notes, &inv.PaymentInstructions, &inv.Invoicee.Name, &inv.Invoicee.VATIN, &inv.Invoicee.Phone, &inv.Invoicee.Email, &inv.Invoicee.Address, &inv.Invoicee.City, &inv.Invoicee.Province, &inv.Invoicee.PostalCode, &inv.Subtotal, &inv.Total)) {
return nil
}
if err := conn.QueryRow(ctx, "select business_name, vatin, phone, email, address, city, province, postal_code, legal_disclaimer from company where company_id = $1", company.Id).Scan(&inv.Invoicer.Name, &inv.Invoicer.VATIN, &inv.Invoicer.Phone, &inv.Invoicer.Email, &inv.Invoicer.Address, &inv.Invoicer.City, &inv.Invoicer.Province, &inv.Invoicer.PostalCode, &inv.LegalDisclaimer); err != nil {
panic(err)
}
if err := conn.QueryRow(ctx, "select array_agg(array[name, to_price(amount, $2)]) from invoice_tax_amount join tax using (tax_id) where invoice_id = $1", invoiceId, decimalDigits).Scan(&inv.Taxes); err != nil {
panic(err)
}
rows := conn.MustQuery(ctx, "select invoice_product.name, description, to_price(price, $2), (discount_rate * 100)::integer, quantity, to_price(subtotal, $2), to_price(total, $2), array_agg(array[tax_class.name, (tax_rate * 100)::integer::text]) from invoice_product join invoice_product_amount using (invoice_product_id) left join invoice_product_tax using (invoice_product_id) left join tax using (tax_id) left join tax_class using (tax_class_id) where invoice_id = $1 group by invoice_product.name, description, discount_rate, price, quantity, subtotal, total", invoiceId, decimalDigits)
defer rows.Close()
taxClasses := map[string]bool{}
for rows.Next() {
product := &invoiceProduct{
Taxes: make(map[string]int),
}
var taxes [][]string
if err := rows.Scan(&product.Name, &product.Description, &product.Price, &product.Discount, &product.Quantity, &product.Subtotal, &product.Total, &taxes); err != nil {
panic(err)
}
for _, tax := range taxes {
taxClass := tax[0]
taxClasses[taxClass] = true
product.Taxes[taxClass], _ = strconv.Atoi(tax[1])
}
if product.Discount > 0 {
inv.HasDiscounts = true
}
inv.Products = append(inv.Products, product)
}
for taxClass := range taxClasses {
inv.TaxClasses = append(inv.TaxClasses, taxClass)
}
sort.Strings(inv.TaxClasses)
if rows.Err() != nil {
panic(rows.Err())
}
return inv
}
type newInvoicePage struct {
Form *invoiceForm
Subtotal string
Taxes [][]string
Total string
}
func newNewInvoicePage(form *invoiceForm, r *http.Request) *newInvoicePage {
page := &newInvoicePage{
Form: form,
}
conn := getConn(r)
company := mustGetCompany(r)
err := conn.QueryRow(r.Context(), "select subtotal, taxes, total from compute_new_invoice_amount($1, $2)", company.Id, NewInvoiceProductArray(form.Products)).Scan(&page.Subtotal, &page.Taxes, &page.Total)
if err != nil {
panic(err)
}
return page
}
func mustRenderNewInvoiceForm(w http.ResponseWriter, r *http.Request, form *invoiceForm) {
locale := getLocale(r)
form.Customer.EmptyLabel = gettext("Select a customer to bill.", locale)
page := newNewInvoicePage(form, r)
mustRenderAppTemplate(w, r, "invoices/new.gohtml", page)
}
func mustRenderNewInvoiceProductsForm(w http.ResponseWriter, r *http.Request, action string, form *invoiceForm) {
conn := getConn(r)
company := mustGetCompany(r)
page := newInvoiceProductsPage{
Action: companyURI(company, action),
Form: form,
Products: mustGetProductChoices(r.Context(), conn, company),
}
mustRenderAppTemplate(w, r, "invoices/products.gohtml", page)
}
func mustGetProductChoices(ctx context.Context, conn *Conn, company *Company) []*productChoice {
rows := conn.MustQuery(ctx, "select product.product_id, product.name, to_price(price, decimal_digits) from product join company using (company_id) join currency using (currency_code) where company_id = $1 order by name", company.Id)
defer rows.Close()
var choices []*productChoice
for rows.Next() {
entry := &productChoice{}
if err := rows.Scan(&entry.Id, &entry.Name, &entry.Price); err != nil {
panic(err)
}
choices = append(choices, entry)
}
if rows.Err() != nil {
panic(rows.Err())
}
return choices
}
type newInvoiceProductsPage struct {
Action string
Form *invoiceForm
Products []*productChoice
}
type productChoice struct {
Id int
Name string
Price string
}
func HandleAddInvoice(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
locale := getLocale(r)
conn := getConn(r)
company := mustGetCompany(r)
form := newInvoiceForm(r.Context(), conn, locale, company)
if err := form.Parse(r); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if err := verifyCsrfTokenValid(r); err != nil {
http.Error(w, err.Error(), http.StatusForbidden)
return
}
if !form.Validate() {
w.WriteHeader(http.StatusUnprocessableEntity)
mustRenderNewInvoiceForm(w, r, form)
return
}
slug := conn.MustGetText(r.Context(), "", "select add_invoice($1, $2, $3, $4, $5, $6, $7, $8)", company.Id, form.Number, form.Date, form.Customer, form.Notes, form.PaymentMethod, form.SplitTags(), NewInvoiceProductArray(form.Products))
http.Redirect(w, r, companyURI(company, "/invoices/"+slug), http.StatusSeeOther)
}
func HandleNewInvoiceAction(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
switch params[0].Value {
case "new":
handleInvoiceAction(w, r, "/invoices/new", mustRenderNewInvoiceForm)
case "batch":
HandleBatchInvoiceAction(w, r, params)
default:
http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
}
}
func HandleBatchInvoiceAction(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
if err := r.ParseForm(); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if err := verifyCsrfTokenValid(r); err != nil {
http.Error(w, err.Error(), http.StatusForbidden)
return
}
slugs := r.Form["invoice"]
if len(slugs) == 0 {
http.Redirect(w, r, companyURI(mustGetCompany(r), "/invoices"), http.StatusSeeOther)
return
}
locale := getLocale(r)
switch r.Form.Get("action") {
case "download":
invoices := mustWriteInvoicesPdf(r, slugs)
w.Header().Set("Content-Type", "application/zip")
w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=%s", gettext("invoices.zip", locale)))
w.WriteHeader(http.StatusOK)
if _, err := w.Write(invoices); err != nil {
panic(err)
}
default:
http.Error(w, gettext("Invalid action", locale), http.StatusBadRequest)
}
}
func mustWriteInvoicesPdf(r *http.Request, slugs []string) []byte {
conn := getConn(r)
company := mustGetCompany(r)
buf := new(bytes.Buffer)
w := zip.NewWriter(buf)
for _, slug := range slugs {
inv := mustGetInvoice(r.Context(), conn, company, slug)
if inv == nil {
continue
}
f, err := w.Create(inv.Number + ".pdf")
if err != nil {
panic(err)
}
mustWriteInvoicePdf(f, r, inv)
}
mustClose(w)
return buf.Bytes()
}
type invoiceForm struct {
locale *Locale
company *Company
InvoiceStatus *SelectField
Customer *SelectField
Number *InputField
Date *InputField
Notes *InputField
PaymentMethod *SelectField
Tags *InputField
Products []*invoiceProductForm
}
func newInvoiceForm(ctx context.Context, conn *Conn, locale *Locale, company *Company) *invoiceForm {
return &invoiceForm{
locale: locale,
company: company,
InvoiceStatus: &SelectField{
Name: "invoice_status",
Required: true,
Label: pgettext("input", "Invoice Status", locale),
Selected: []string{"created"},
Options: MustGetOptions(ctx, conn, "select invoice_status.invoice_status, isi18n.name from invoice_status join invoice_status_i18n isi18n using(invoice_status) where isi18n.lang_tag = $1 order by invoice_status", locale.Language.String()),
},
Customer: &SelectField{
Name: "customer",
Label: pgettext("input", "Customer", locale),
Required: true,
Options: MustGetOptions(ctx, conn, "select contact_id::text, business_name from contact where company_id = $1 order by business_name", company.Id),
},
Number: &InputField{
Name: "number",
Label: pgettext("input", "Number", locale),
Type: "text",
},
Date: &InputField{
Name: "date",
Label: pgettext("input", "Invoice Date", locale),
Type: "date",
Required: true,
},
Notes: &InputField{
Name: "notes",
Label: pgettext("input", "Notes", locale),
Type: "textarea",
},
Tags: &InputField{
Name: "tags",
Label: pgettext("input", "Tags", locale),
Type: "text",
},
PaymentMethod: &SelectField{
Name: "payment_method",
Required: true,
Label: pgettext("input", "Payment Method", locale),
Selected: []string{conn.MustGetText(ctx, "", "select default_payment_method_id::text from company where company_id = $1", company.Id)},
Options: MustGetOptions(ctx, conn, "select payment_method_id::text, name from payment_method where company_id = $1", company.Id),
},
}
}
func (form *invoiceForm) Parse(r *http.Request) error {
if err := r.ParseForm(); err != nil {
return err
}
form.InvoiceStatus.FillValue(r)
form.Customer.FillValue(r)
form.Number.FillValue(r)
form.Date.FillValue(r)
form.Notes.FillValue(r)
form.Tags.FillValue(r)
form.PaymentMethod.FillValue(r)
if _, ok := r.Form["product.id.0"]; ok {
taxOptions := mustGetTaxOptions(r.Context(), getConn(r), form.company)
for index := 0; true; index++ {
if _, ok := r.Form["product.id."+strconv.Itoa(index)]; !ok {
break
}
productForm := newInvoiceProductForm(index, form.company, form.locale, taxOptions)
if err := productForm.Parse(r); err != nil {
return err
}
form.Products = append(form.Products, productForm)
}
}
return nil
}
func (form *invoiceForm) Validate() bool {
validator := newFormValidator()
validator.CheckValidSelectOption(form.InvoiceStatus, gettext("Selected invoice status is not valid.", form.locale))
validator.CheckValidSelectOption(form.Customer, gettext("Selected customer is not valid.", form.locale))
if validator.CheckRequiredInput(form.Date, gettext("Invoice date can not be empty.", form.locale)) {
validator.CheckValidDate(form.Date, gettext("Invoice date must be a valid date.", form.locale))
}
validator.CheckValidSelectOption(form.PaymentMethod, gettext("Selected payment method is not valid.", form.locale))
allOK := validator.AllOK()
for _, product := range form.Products {
allOK = product.Validate() && allOK
}
return allOK
}
func (form *invoiceForm) Update() {
products := form.Products
form.Products = nil
for n, product := range products {
if product.Quantity.Val != "0" {
if n != len(form.Products) {
product.Reindex(len(form.Products))
}
form.Products = append(form.Products, product)
}
}
}
func (form *invoiceForm) AddProducts(ctx context.Context, conn *Conn, productsId []string) {
form.mustAddProductsFromQuery(ctx, conn, "select '', product_id, name, description, to_price(price, decimal_digits), 1 as quantity, 0 as discount, array_remove(array_agg(tax_id), null) from product join company using (company_id) join currency using (currency_code) left join product_tax using (product_id) where product_id = any ($1) group by product_id, name, description, price, decimal_digits", productsId)
}
func (form *invoiceForm) mustAddProductsFromQuery(ctx context.Context, conn *Conn, sql string, args ...interface{}) {
index := len(form.Products)
taxOptions := mustGetTaxOptions(ctx, conn, form.company)
rows := conn.MustQuery(ctx, sql, args...)
defer rows.Close()
for rows.Next() {
product := newInvoiceProductForm(index, form.company, form.locale, taxOptions)
if err := rows.Scan(product.InvoiceProductId, product.ProductId, product.Name, product.Description, product.Price, product.Quantity, product.Discount, product.Tax); err != nil {
panic(err)
}
form.Products = append(form.Products, product)
index++
}
if rows.Err() != nil {
panic(rows.Err())
}
}
func (form *invoiceForm) MustFillFromDatabase(ctx context.Context, conn *Conn, slug string) bool {
var invoiceId int
selectedInvoiceStatus := form.InvoiceStatus.Selected
form.InvoiceStatus.Clear()
selectedPaymentMethod := form.PaymentMethod.Selected
form.PaymentMethod.Clear()
if notFoundErrorOrPanic(conn.QueryRow(ctx, `
select invoice_id
, invoice_status
, contact_id
, invoice_number
, invoice_date
, notes
, payment_method_id
, string_agg(tag.name, ',')
from invoice
left join invoice_tag using (invoice_id)
left join tag using(tag_id) where slug = $1
group by invoice_id
, contact_id
, invoice_number
, invoice_date
, notes
, payment_method_id
`, slug).Scan(&invoiceId, form.InvoiceStatus, form.Customer, form.Number, form.Date, form.Notes, form.PaymentMethod, form.Tags)) {
form.PaymentMethod.Selected = selectedPaymentMethod
form.InvoiceStatus.Selected = selectedInvoiceStatus
return false
}
form.Products = []*invoiceProductForm{}
form.mustAddProductsFromQuery(ctx, conn, "select invoice_product_id::text, product_id, name, description, to_price(price, $2), quantity, (discount_rate * 100)::integer, array_remove(array_agg(tax_id), null) from invoice_product left join invoice_product_tax using (invoice_product_id) where invoice_id = $1 group by invoice_product_id, product_id, name, description, discount_rate, price, quantity", invoiceId, form.company.DecimalDigits)
return true
}
func mustGetTaxOptions(ctx context.Context, conn *Conn, company *Company) []*SelectOption {
return MustGetGroupedOptions(ctx, conn, "select tax_id::text, tax.name, tax_class.name from tax join tax_class using (tax_class_id) where tax.company_id = $1 order by tax_class.name, tax.name", company.Id)
}
func (form *invoiceForm) SplitTags() []string {
reg := regexp.MustCompile("[^a-z0-9-]+")
tags := strings.Split(reg.ReplaceAllString(form.Tags.Val, ","), ",")
if len(tags) == 1 && len(tags[0]) == 0 {
return []string{}
}
return tags
}
type invoiceProductForm struct {
locale *Locale
company *Company
InvoiceProductId *InputField
ProductId *InputField
Name *InputField
Description *InputField
Price *InputField
Quantity *InputField
Discount *InputField
Tax *SelectField
}
func newInvoiceProductForm(index int, company *Company, locale *Locale, taxOptions []*SelectOption) *invoiceProductForm {
form := &invoiceProductForm{
locale: locale,
company: company,
InvoiceProductId: &InputField{
Label: pgettext("input", "Id", locale),
Type: "hidden",
Required: true,
},
ProductId: &InputField{
Label: pgettext("input", "Id", locale),
Type: "hidden",
Required: true,
},
Name: &InputField{
Label: pgettext("input", "Name", locale),
Type: "text",
Required: true,
},
Description: &InputField{
Label: pgettext("input", "Description", locale),
Type: "textarea",
},
Price: &InputField{
Label: pgettext("input", "Price", locale),
Type: "number",
Required: true,
Attributes: []template.HTMLAttr{
`min="0"`,
template.HTMLAttr(fmt.Sprintf(`step="%v"`, company.MinCents())),
},
},
Quantity: &InputField{
Label: pgettext("input", "Quantity", locale),
Type: "number",
Required: true,
Attributes: []template.HTMLAttr{
`min="0"`,
},
},
Discount: &InputField{
Label: pgettext("input", "Discount (%)", locale),
Type: "number",
Required: true,
Attributes: []template.HTMLAttr{
`min="0"`,
`max="100"`,
},
},
Tax: &SelectField{
Label: pgettext("input", "Taxes", locale),
Multiple: true,
Options: taxOptions,
},
}
form.Reindex(index)
return form
}
func (form *invoiceProductForm) Reindex(index int) {
suffix := "." + strconv.Itoa(index)
form.InvoiceProductId.Name = "product.invoice_product_id" + suffix
form.ProductId.Name = "product.id" + suffix
form.Name.Name = "product.name" + suffix
form.Description.Name = "product.description" + suffix
form.Price.Name = "product.price" + suffix
form.Quantity.Name = "product.quantity" + suffix
form.Discount.Name = "product.discount" + suffix
form.Tax.Name = "product.tax" + suffix
}
func (form *invoiceProductForm) Parse(r *http.Request) error {
if err := r.ParseForm(); err != nil {
return err
}
form.InvoiceProductId.FillValue(r)
form.ProductId.FillValue(r)
form.Name.FillValue(r)
form.Description.FillValue(r)
form.Price.FillValue(r)
form.Quantity.FillValue(r)
form.Discount.FillValue(r)
form.Tax.FillValue(r)
return nil
}
func (form *invoiceProductForm) Validate() bool {
validator := newFormValidator()
validator.CheckRequiredInput(form.ProductId, gettext("Product ID can not be empty.", form.locale))
validator.CheckRequiredInput(form.Name, gettext("Name can not be empty.", form.locale))
if validator.CheckRequiredInput(form.Price, gettext("Price can not be empty.", form.locale)) {
validator.CheckValidDecimal(form.Price, form.company.MinCents(), math.MaxFloat64, gettext("Price must be a number greater than zero.", form.locale))
}
if validator.CheckRequiredInput(form.Quantity, gettext("Quantity can not be empty.", form.locale)) {
validator.CheckValidInteger(form.Quantity, 1, math.MaxInt32, gettext("Quantity must be a number greater than zero.", form.locale))
}
if validator.CheckRequiredInput(form.Discount, gettext("Discount can not be empty.", form.locale)) {
validator.CheckValidInteger(form.Discount, 0, 100, gettext("Discount must be a percentage between 0 and 100.", form.locale))
}
validator.CheckValidSelectOption(form.Tax, gettext("Selected tax is not valid.", form.locale))
validator.CheckAtMostOneOfEachGroup(form.Tax, gettext("You can only select a tax of each class.", form.locale))
return validator.AllOK()
}
func HandleUpdateInvoice(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
locale := getLocale(r)
conn := getConn(r)
company := mustGetCompany(r)
form := newInvoiceForm(r.Context(), conn, locale, company)
if err := form.Parse(r); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if err := verifyCsrfTokenValid(r); err != nil {
http.Error(w, err.Error(), http.StatusForbidden)
return
}
if r.FormValue("quick") == "status" {
slug := conn.MustGetText(r.Context(), "", "update invoice set invoice_status = $1 where slug = $2 returning slug", form.InvoiceStatus, params[0].Value)
if slug == "" {
http.NotFound(w, r)
}
http.Redirect(w, r, companyURI(mustGetCompany(r), "/invoices"), http.StatusSeeOther)
} else {
slug := params[0].Value
if !form.Validate() {
w.WriteHeader(http.StatusUnprocessableEntity)
mustRenderEditInvoiceForm(w, r, slug, form)
return
}
slug = conn.MustGetText(r.Context(), "", "select edit_invoice($1, $2, $3, $4, $5, $6, $7)", slug, form.InvoiceStatus, form.Customer, form.Notes, form.PaymentMethod, form.SplitTags(), EditedInvoiceProductArray(form.Products))
if slug == "" {
http.NotFound(w, r)
return
}
http.Redirect(w, r, companyURI(company, "/invoices/"+slug), http.StatusSeeOther)
}
}
func ServeEditInvoice(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
conn := getConn(r)
company := mustGetCompany(r)
slug := params[0].Value
locale := getLocale(r)
form := newInvoiceForm(r.Context(), conn, locale, company)
if !form.MustFillFromDatabase(r.Context(), conn, slug) {
http.NotFound(w, r)
return
}
w.WriteHeader(http.StatusOK)
mustRenderEditInvoiceForm(w, r, slug, form)
}
type editInvoicePage struct {
*newInvoicePage
Slug string
Number string
}
func newEditInvoicePage(slug string, form *invoiceForm, r *http.Request) *editInvoicePage {
return &editInvoicePage{
newNewInvoicePage(form, r),
slug,
form.Number.String(),
}
}
func mustRenderEditInvoiceForm(w http.ResponseWriter, r *http.Request, slug string, form *invoiceForm) {
page := newEditInvoicePage(slug, form, r)
mustRenderAppTemplate(w, r, "invoices/edit.gohtml", page)
}
func HandleEditInvoiceAction(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
slug := params[0].Value
actionUri := fmt.Sprintf("/invoices/%s/edit", slug)
handleInvoiceAction(w, r, actionUri, func(w http.ResponseWriter, r *http.Request, form *invoiceForm) {
mustRenderEditInvoiceForm(w, r, slug, form)
})
}
type renderFormFunc func(w http.ResponseWriter, r *http.Request, form *invoiceForm)
func handleInvoiceAction(w http.ResponseWriter, r *http.Request, action string, renderForm renderFormFunc) {
locale := getLocale(r)
conn := getConn(r)
company := mustGetCompany(r)
form := newInvoiceForm(r.Context(), conn, locale, company)
if err := form.Parse(r); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if err := verifyCsrfTokenValid(r); err != nil {
http.Error(w, err.Error(), http.StatusForbidden)
return
}
switch r.Form.Get("action") {
case "update":
form.Update()
w.WriteHeader(http.StatusOK)
renderForm(w, r, form)
case "select-products":
w.WriteHeader(http.StatusOK)
mustRenderNewInvoiceProductsForm(w, r, action, form)
case "add-products":
form.AddProducts(r.Context(), conn, r.Form["id"])
w.WriteHeader(http.StatusOK)
renderForm(w, r, form)
default:
http.Error(w, gettext("Invalid action", locale), http.StatusBadRequest)
}
}