numerus/pkg/company.go

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package pkg
import (
"context"
"errors"
"html/template"
"net/http"
"net/url"
"strconv"
"strings"
)
const (
ContextCompanyKey = "numerus-company"
)
type Company struct {
Id int
Slug string
}
func CompanyHandler(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
slug := r.URL.Path
if idx := strings.IndexByte(slug, '/'); idx >= 0 {
slug = slug[:idx]
}
conn := getConn(r)
company := &Company{
Slug: slug,
}
err := conn.QueryRow(r.Context(), "select company_id from company where slug = $1", slug).Scan(&company.Id)
if err != nil {
http.NotFound(w, r)
return
}
ctx := context.WithValue(r.Context(), ContextCompanyKey, company)
r = r.WithContext(ctx)
// Same as StripPrefix
p := strings.TrimPrefix(r.URL.Path, slug)
rp := strings.TrimPrefix(r.URL.RawPath, slug)
if len(p) < len(r.URL.Path) && (r.URL.RawPath == "" || len(rp) < len(r.URL.RawPath)) {
r2 := new(http.Request)
*r2 = *r
r2.URL = new(url.URL)
*r2.URL = *r.URL
if p == "" {
r2.URL.Path = "/"
} else {
r2.URL.Path = p
}
r2.URL.RawPath = rp
next.ServeHTTP(w, r2)
} else {
http.NotFound(w, r)
}
})
}
func getCompany(r *http.Request) *Company {
company := r.Context().Value(ContextCompanyKey)
if company == nil {
return nil
}
return company.(*Company)
}
type CurrencyOption struct {
Code string
Symbol string
}
type CountryOption struct {
Code string
Name string
}
type Tax struct {
Id int
Name string
Rate int
}
type taxDetailsForm struct {
locale *Locale
BusinessName *InputField
VATIN *InputField
TradeName *InputField
Phone *InputField
Email *InputField
Web *InputField
Address *InputField
City *InputField
Province *InputField
PostalCode *InputField
Country *SelectField
Currency *SelectField
}
func newTaxDetailsForm(ctx context.Context, conn *Conn, locale *Locale) *taxDetailsForm {
return &taxDetailsForm{
locale: locale,
BusinessName: &InputField{
Name: "business_name",
Label: pgettext("input", "Business name", locale),
Type: "text",
Required: true,
Attributes: []template.HTMLAttr{
`autocomplete="organization"`,
},
},
VATIN: &InputField{
Name: "vatin",
Label: pgettext("input", "VAT number", locale),
Type: "text",
Required: true,
},
TradeName: &InputField{
Name: "trade_name",
Label: pgettext("input", "Trade name", locale),
Type: "text",
},
Phone: &InputField{
Name: "phone",
Label: pgettext("input", "Phone", locale),
Type: "tel",
Required: true,
Attributes: []template.HTMLAttr{
`autocomplete="tel"`,
},
},
Email: &InputField{
Name: "email",
Label: pgettext("input", "Email", locale),
Type: "email",
Required: true,
Attributes: []template.HTMLAttr{
`autocomplete="email"`,
},
},
Web: &InputField{
Name: "web",
Label: pgettext("input", "Web", locale),
Type: "url",
Attributes: []template.HTMLAttr{
`autocomplete="url"`,
},
},
Address: &InputField{
Name: "address",
Label: pgettext("input", "Address", locale),
Type: "text",
Required: true,
Attributes: []template.HTMLAttr{
`autocomplete="address-line1"`,
},
},
City: &InputField{
Name: "city",
Label: pgettext("input", "City", locale),
Type: "text",
Required: true,
},
Province: &InputField{
Name: "province",
Label: pgettext("input", "Province", locale),
Type: "text",
Required: true,
},
PostalCode: &InputField{
Name: "postal_code",
Label: pgettext("input", "Postal code", locale),
Type: "text",
Required: true,
Attributes: []template.HTMLAttr{
`autocomplete="postal-code"`,
},
},
Country: &SelectField{
Name: "country",
Label: pgettext("input", "Country", locale),
Options: mustGetCountryOptions(ctx, conn, locale),
Selected: "ES",
Attributes: []template.HTMLAttr{
`autocomplete="country"`,
},
},
Currency: &SelectField{
Name: "currency",
Label: pgettext("input", "Currency", locale),
Options: MustGetOptions(ctx, conn, "select currency_code, currency_symbol from currency order by currency_code"),
Selected: "EUR",
},
}
}
func (form *taxDetailsForm) Parse(r *http.Request) error {
if err := r.ParseForm(); err != nil {
return err
}
form.BusinessName.FillValue(r)
form.VATIN.FillValue(r)
form.TradeName.FillValue(r)
form.Phone.FillValue(r)
form.Email.FillValue(r)
form.Web.FillValue(r)
form.Address.FillValue(r)
form.City.FillValue(r)
form.Province.FillValue(r)
form.PostalCode.FillValue(r)
form.Country.FillValue(r)
form.Currency.FillValue(r)
return nil
}
func (form *taxDetailsForm) Validate(ctx context.Context, conn *Conn) bool {
validator := newFormValidator()
validator.CheckRequiredInput(form.BusinessName, gettext("Business name can not be empty.", form.locale))
if validator.CheckRequiredInput(form.VATIN, gettext("VAT number can not be empty.", form.locale)) {
validator.CheckValidVATINInput(form.VATIN, form.Country.Selected, gettext("This value is not a valid VAT number.", form.locale))
}
if validator.CheckRequiredInput(form.Phone, gettext("Phone can not be empty.", form.locale)) {
validator.CheckValidPhoneInput(form.Phone, form.Country.Selected, gettext("This value is not a valid phone number.", form.locale))
}
if validator.CheckRequiredInput(form.Email, gettext("Email can not be empty.", form.locale)) {
validator.CheckValidEmailInput(form.Email, gettext("This value is not a valid email. It should be like name@domain.com.", form.locale))
}
if form.Web.Val != "" {
validator.checkValidURL(form.Web, gettext("This value is not a valid web address. It should be like https://domain.com/.", form.locale))
}
validator.CheckRequiredInput(form.Address, gettext("Address can not be empty.", form.locale))
validator.CheckRequiredInput(form.City, gettext("City can not be empty.", form.locale))
validator.CheckRequiredInput(form.Province, gettext("Province can not be empty.", form.locale))
if validator.CheckRequiredInput(form.PostalCode, gettext("Postal code can not be empty.", form.locale)) {
validator.CheckValidPostalCode(ctx, conn, form.PostalCode, form.Country.Selected, gettext("This value is not a valid postal code.", form.locale))
}
validator.CheckValidSelectOption(form.Country, gettext("Selected country is not valid.", form.locale))
validator.CheckValidSelectOption(form.Currency, gettext("Selected currency is not valid.", form.locale))
return validator.AllOK()
}
func (form *taxDetailsForm) mustFillFromDatabase(ctx context.Context, conn *Conn, company *Company) *taxDetailsForm {
err := conn.QueryRow(ctx, "select business_name, substr(vatin::text, 3), trade_name, phone, email, web, address, city, province, postal_code, country_code, currency_code from company where company_id = $1", company.Id).Scan(form.BusinessName, form.VATIN, form.TradeName, form.Phone, form.Email, form.Web, form.Address, form.City, form.Province, form.PostalCode, form.Country, form.Currency)
if err != nil {
panic(err)
}
return form
}
type TaxDetailsPage struct {
DetailsForm *taxDetailsForm
NewTaxForm *newTaxForm
Taxes []*Tax
}
func CompanyTaxDetailsHandler() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
locale := getLocale(r)
conn := getConn(r)
page := &TaxDetailsPage{
DetailsForm: newTaxDetailsForm(r.Context(), conn, locale),
NewTaxForm: newNewTaxForm(locale),
}
company := mustGetCompany(r)
if r.Method == "POST" {
if err := page.DetailsForm.Parse(r); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if ok := page.DetailsForm.Validate(r.Context(), conn); ok {
form := page.DetailsForm
conn.MustExec(r.Context(), "update company set business_name = $1, vatin = ($11 || $2)::vatin, trade_name = $3, phone = parse_packed_phone_number($4, $11), email = $5, web = $6, address = $7, city = $8, province = $9, postal_code = $10, country_code = $11, currency_code = $12 where company_id = $13", form.BusinessName, form.VATIN, form.TradeName, form.Phone, form.Email, form.Web, form.Address, form.City, form.Province, form.PostalCode, form.Country, form.Currency, company.Id)
http.Redirect(w, r, "/company/"+company.Slug+"/tax-details", http.StatusSeeOther)
return
}
w.WriteHeader(http.StatusUnprocessableEntity)
} else {
page.DetailsForm.mustFillFromDatabase(r.Context(), conn, company)
}
page.Taxes = mustGetTaxes(r.Context(), conn, company)
mustRenderAppTemplate(w, r, "tax-details.gohtml", page)
})
}
func mustGetCompany(r *http.Request) *Company {
company := getCompany(r)
if company == nil {
panic(errors.New("company: required but not found"))
}
return company
}
func mustGetTaxes(ctx context.Context, conn *Conn, company *Company) []*Tax {
rows, err := conn.Query(ctx, "select tax_id, name, (rate * 100)::integer from tax where company_id = $1 order by rate, name", company.Id)
if err != nil {
panic(err)
}
defer rows.Close()
var taxes []*Tax
for rows.Next() {
tax := &Tax{}
err = rows.Scan(&tax.Id, &tax.Name, &tax.Rate)
if err != nil {
panic(err)
}
taxes = append(taxes, tax)
}
if rows.Err() != nil {
panic(rows.Err())
}
return taxes
}
type newTaxForm struct {
locale *Locale
Name *InputField
Rate *InputField
}
func newNewTaxForm(locale *Locale) *newTaxForm {
return &newTaxForm{
locale: locale,
Name: &InputField{
Name: "tax_name",
Label: pgettext("input", "Tax name", locale),
Type: "text",
Required: true,
},
Rate: &InputField{
Name: "tax_rate",
Label: pgettext("input", "Rate (%)", locale),
Type: "number",
Required: true,
Attributes: []template.HTMLAttr{
"min=-99",
"max=99",
},
},
}
}
func (form *newTaxForm) Parse(r *http.Request) error {
if err := r.ParseForm(); err != nil {
return err
}
form.Name.FillValue(r)
form.Rate.FillValue(r)
return nil
}
func (form *newTaxForm) Validate() bool {
validator := newFormValidator()
validator.CheckRequiredInput(form.Name, gettext("Tax name can not be empty.", form.locale))
if validator.CheckRequiredInput(form.Rate, gettext("Tax rate can not be empty.", form.locale)) {
validator.CheckValidInteger(form.Rate, -99, 99, gettext("Tax rate must be an integer between -99 and 99.", form.locale))
}
return validator.AllOK()
}
func CompanyTaxHandler() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
param := r.URL.Path
if idx := strings.LastIndexByte(param, '/'); idx >= 0 {
param = param[idx+1:]
}
conn := getConn(r)
company := mustGetCompany(r)
if taxId, err := strconv.Atoi(param); err == nil {
conn.MustExec(r.Context(), "delete from tax where tax_id = $1", taxId)
http.Redirect(w, r, "/company/"+company.Slug+"/tax-details", http.StatusSeeOther)
} else {
locale := getLocale(r)
form := newNewTaxForm(locale)
if err := form.Parse(r); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if form.Validate() {
conn.MustExec(r.Context(), "insert into tax (company_id, name, rate) values ($1, $2, $3 / 100::decimal)", company.Id, form.Name, form.Rate.Integer())
http.Redirect(w, r, "/company/"+company.Slug+"/tax-details", http.StatusSeeOther)
} else {
w.WriteHeader(http.StatusUnprocessableEntity)
}
page := &TaxDetailsPage{
DetailsForm: newTaxDetailsForm(r.Context(), conn, locale).mustFillFromDatabase(r.Context(), conn, company),
NewTaxForm: form,
Taxes: mustGetTaxes(r.Context(), conn, company),
}
mustRenderAppTemplate(w, r, "tax-details.gohtml", page)
}
})
}