numerus/pkg/expenses.go

468 lines
14 KiB
Go

package pkg
import (
"context"
"fmt"
"github.com/julienschmidt/httprouter"
"html/template"
"math"
"net/http"
"strconv"
"strings"
"time"
)
type ExpenseEntry struct {
Slug string
InvoiceDate time.Time
InvoiceNumber string
Amount string
InvoicerName string
OriginalFileName string
Tags []string
}
type expensesIndexPage struct {
Expenses []*ExpenseEntry
TotalAmount string
Filters *expenseFilterForm
}
func IndexExpenses(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
conn := getConn(r)
locale := getLocale(r)
company := mustGetCompany(r)
filters := newExpenseFilterForm(r.Context(), conn, locale, company)
if err := filters.Parse(r); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
page := &expensesIndexPage{
Expenses: mustCollectExpenseEntries(r.Context(), conn, company, filters),
TotalAmount: mustComputeExpensesTotalAmount(r.Context(), conn, filters),
Filters: filters,
}
mustRenderMainTemplate(w, r, "expenses/index.gohtml", page)
}
func mustCollectExpenseEntries(ctx context.Context, conn *Conn, company *Company, filters *expenseFilterForm) []*ExpenseEntry {
where, args := filters.BuildQuery(nil)
rows := conn.MustQuery(ctx, fmt.Sprintf(`
select expense.slug
, invoice_date
, invoice_number
, to_price(amount, decimal_digits)
, contact.business_name
, coalesce(attachment.original_filename, '')
, expense.tags
from expense
left join expense_attachment as attachment using (expense_id)
join contact using (contact_id)
join currency using (currency_code)
where (%s)
order by invoice_date
`, where), args...)
defer rows.Close()
var entries []*ExpenseEntry
for rows.Next() {
entry := &ExpenseEntry{}
if err := rows.Scan(&entry.Slug, &entry.InvoiceDate, &entry.InvoiceNumber, &entry.Amount, &entry.InvoicerName, &entry.OriginalFileName, &entry.Tags); err != nil {
panic(err)
}
entries = append(entries, entry)
}
if rows.Err() != nil {
panic(rows.Err())
}
return entries
}
func mustComputeExpensesTotalAmount(ctx context.Context, conn *Conn, filters *expenseFilterForm) string {
where, args := filters.BuildQuery(nil)
return conn.MustGetText(ctx, "0", fmt.Sprintf(`
select to_price(sum(amount)::integer, decimal_digits)
from expense
join currency using (currency_code)
where (%s)
group by decimal_digits
`, where), args...)
}
func ServeExpenseForm(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
locale := getLocale(r)
conn := getConn(r)
company := mustGetCompany(r)
form := newExpenseForm(r.Context(), conn, locale, company)
slug := params[0].Value
if slug == "new" {
w.WriteHeader(http.StatusOK)
form.InvoiceDate.Val = time.Now().Format("2006-01-02")
mustRenderNewExpenseForm(w, r, form)
return
}
if !form.MustFillFromDatabase(r.Context(), conn, slug) {
http.NotFound(w, r)
return
}
w.WriteHeader(http.StatusOK)
mustRenderEditExpenseForm(w, r, slug, form)
}
func mustRenderNewExpenseForm(w http.ResponseWriter, r *http.Request, form *expenseForm) {
locale := getLocale(r)
form.Invoicer.EmptyLabel = gettext("Select a contact.", locale)
mustRenderMainTemplate(w, r, "expenses/new.gohtml", form)
}
func mustRenderEditExpenseForm(w http.ResponseWriter, r *http.Request, slug string, form *expenseForm) {
page := &editExpensePage{
Slug: slug,
Form: form,
}
mustRenderMainTemplate(w, r, "expenses/edit.gohtml", page)
}
type editExpensePage struct {
Slug string
Form *expenseForm
}
type expenseForm struct {
locale *Locale
company *Company
Invoicer *SelectField
InvoiceNumber *InputField
InvoiceDate *InputField
Tax *SelectField
Amount *InputField
File *FileField
Tags *TagsField
}
func newExpenseForm(ctx context.Context, conn *Conn, locale *Locale, company *Company) *expenseForm {
return &expenseForm{
locale: locale,
company: company,
Invoicer: &SelectField{
Name: "invoicer",
Label: pgettext("input", "Contact", locale),
Required: true,
Options: mustGetContactOptions(ctx, conn, company),
},
InvoiceNumber: &InputField{
Name: "invoice_number",
Label: pgettext("input", "Invoice number", locale),
Type: "text",
},
InvoiceDate: &InputField{
Name: "invoice_date",
Label: pgettext("input", "Invoice Date", locale),
Required: true,
Type: "date",
},
Tax: &SelectField{
Name: "tax",
Label: pgettext("input", "Taxes", locale),
Multiple: true,
Options: mustGetTaxOptions(ctx, conn, company),
},
Amount: &InputField{
Name: "amount",
Label: pgettext("input", "Amount", locale),
Type: "number",
Required: true,
Attributes: []template.HTMLAttr{
`min="0"`,
template.HTMLAttr(fmt.Sprintf(`step="%v"`, company.MinCents())),
},
},
File: &FileField{
Name: "file",
Label: pgettext("input", "File", locale),
MaxSize: 1 << 20,
},
Tags: &TagsField{
Name: "tags",
Label: pgettext("input", "Tags", locale),
},
}
}
func (form *expenseForm) Parse(r *http.Request) error {
if err := r.ParseMultipartForm(form.File.MaxSize); err != nil {
return err
}
form.Invoicer.FillValue(r)
form.InvoiceNumber.FillValue(r)
form.InvoiceDate.FillValue(r)
form.Tax.FillValue(r)
form.Amount.FillValue(r)
if err := form.File.FillValue(r); err != nil {
return err
}
form.Tags.FillValue(r)
return nil
}
func (form *expenseForm) Validate() bool {
validator := newFormValidator()
validator.CheckValidSelectOption(form.Invoicer, gettext("Selected contact is not valid.", form.locale))
validator.CheckValidDate(form.InvoiceDate, gettext("Invoice date must be a valid date.", 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))
if validator.CheckRequiredInput(form.Amount, gettext("Amount can not be empty.", form.locale)) {
validator.CheckValidDecimal(form.Amount, form.company.MinCents(), math.MaxFloat64, gettext("Amount must be a number greater than zero.", 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 (form *expenseForm) MustFillFromDatabase(ctx context.Context, conn *Conn, slug string) bool {
return !notFoundErrorOrPanic(conn.QueryRow(ctx, `
select contact_id
, invoice_number
, invoice_date
, to_price(amount, decimal_digits)
, array_agg(tax_id)
, tags
from expense
left join expense_tax using (expense_id)
join currency using (currency_code)
where expense.slug = $1
group by contact_id
, invoice_number
, invoice_date
, amount
, decimal_digits
, tags
`, slug).Scan(
form.Invoicer,
form.InvoiceNumber,
form.InvoiceDate,
form.Amount,
form.Tax,
form.Tags))
}
func HandleAddExpense(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
conn := getConn(r)
locale := getLocale(r)
company := mustGetCompany(r)
form := newExpenseForm(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() {
if !IsHTMxRequest(r) {
w.WriteHeader(http.StatusUnprocessableEntity)
}
mustRenderNewExpenseForm(w, r, form)
return
}
taxes := mustSliceAtoi(form.Tax.Selected)
slug := conn.MustGetText(r.Context(), "", "select add_expense($1, $2, $3, $4, $5, $6, $7)", company.Id, form.InvoiceDate, form.Invoicer, form.InvoiceNumber, form.Amount, taxes, form.Tags)
if len(form.File.Content) > 0 {
conn.MustQuery(r.Context(), "select attach_to_expense($1, $2, $3, $4)", slug, form.File.OriginalFileName, form.File.ContentType, form.File.Content)
}
htmxRedirect(w, r, companyURI(company, "/expenses"))
}
func HandleUpdateExpense(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
conn := getConn(r)
locale := getLocale(r)
company := mustGetCompany(r)
form := newExpenseForm(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
}
slug := params[0].Value
if !form.Validate() {
if !IsHTMxRequest(r) {
w.WriteHeader(http.StatusUnprocessableEntity)
}
mustRenderEditExpenseForm(w, r, slug, form)
return
}
taxes := mustSliceAtoi(form.Tax.Selected)
if found := conn.MustGetText(r.Context(), "", "select edit_expense($1, $2, $3, $4, $5, $6, $7)", slug, form.InvoiceDate, form.Invoicer, form.InvoiceNumber, form.Amount, taxes, form.Tags); found == "" {
http.NotFound(w, r)
return
}
if len(form.File.Content) > 0 {
conn.MustQuery(r.Context(), "select attach_to_expense($1, $2, $3, $4)", slug, form.File.OriginalFileName, form.File.ContentType, form.File.Content)
}
htmxRedirect(w, r, companyURI(company, "/expenses"))
}
type expenseFilterForm struct {
locale *Locale
company *Company
Contact *SelectField
InvoiceNumber *InputField
FromDate *InputField
ToDate *InputField
Tags *TagsField
TagsCondition *ToggleField
}
func newExpenseFilterForm(ctx context.Context, conn *Conn, locale *Locale, company *Company) *expenseFilterForm {
return &expenseFilterForm{
locale: locale,
company: company,
Contact: &SelectField{
Name: "contact",
Label: pgettext("input", "Contact", locale),
EmptyLabel: gettext("All contacts", locale),
Options: mustGetContactOptions(ctx, conn, company),
},
InvoiceNumber: &InputField{
Name: "number",
Label: pgettext("input", "Invoice Number", locale),
Type: "search",
},
FromDate: &InputField{
Name: "from_date",
Label: pgettext("input", "From Date", locale),
Type: "date",
},
ToDate: &InputField{
Name: "to_date",
Label: pgettext("input", "To Date", locale),
Type: "date",
},
Tags: &TagsField{
Name: "tags",
Label: pgettext("input", "Tags", locale),
},
TagsCondition: &ToggleField{
Name: "tags_condition",
Label: pgettext("input", "Tags Condition", locale),
Selected: "and",
FirstOption: &ToggleOption{
Value: "and",
Label: pgettext("tag condition", "All", locale),
Description: gettext("Invoices must have all the specified labels.", locale),
},
SecondOption: &ToggleOption{
Value: "or",
Label: pgettext("tag condition", "Any", locale),
Description: gettext("Invoices must have at least one of the specified labels.", locale),
},
},
}
}
func (form *expenseFilterForm) Parse(r *http.Request) error {
if err := r.ParseForm(); err != nil {
return err
}
form.Contact.FillValue(r)
form.InvoiceNumber.FillValue(r)
form.FromDate.FillValue(r)
form.ToDate.FillValue(r)
form.Tags.FillValue(r)
form.TagsCondition.FillValue(r)
return nil
}
func (form *expenseFilterForm) BuildQuery(args []interface{}) (string, []interface{}) {
var where []string
appendWhere := func(expression string, value interface{}) {
args = append(args, value)
where = append(where, fmt.Sprintf(expression, len(args)))
}
maybeAppendWhere := func(expression string, value string, conv func(string) interface{}) {
if value != "" {
if conv == nil {
appendWhere(expression, value)
} else {
appendWhere(expression, conv(value))
}
}
}
appendWhere("expense.company_id = $%d", form.company.Id)
maybeAppendWhere("contact_id = $%d", form.Contact.String(), func(v string) interface{} {
customerId, _ := strconv.Atoi(form.Contact.Selected[0])
return customerId
})
maybeAppendWhere("invoice_number = $%d", form.InvoiceNumber.String(), nil)
maybeAppendWhere("invoice_date >= $%d", form.FromDate.String(), nil)
maybeAppendWhere("invoice_date <= $%d", form.ToDate.String(), nil)
if len(form.Tags.Tags) > 0 {
if form.TagsCondition.Selected == "and" {
appendWhere("expense.tags @> $%d", form.Tags)
} else {
appendWhere("expense.tags && $%d", form.Tags)
}
}
return strings.Join(where, ") AND ("), args
}
func ServeEditExpenseTags(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
conn := getConn(r)
locale := getLocale(r)
company := getCompany(r)
slug := params[0].Value
form := newTagsForm(companyURI(company, "/expenses/"+slug+"/tags"), slug, locale)
if notFoundErrorOrPanic(conn.QueryRow(r.Context(), `select tags from expense where slug = $1`, form.Slug).Scan(form.Tags)) {
http.NotFound(w, r)
return
}
mustRenderStandaloneTemplate(w, r, "tags/edit.gohtml", form)
}
func HandleUpdateExpenseTags(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
locale := getLocale(r)
conn := getConn(r)
company := getCompany(r)
slug := params[0].Value
form := newTagsForm(companyURI(company, "/expenses/"+slug+"/tags/edit"), slug, locale)
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 conn.MustGetText(r.Context(), "", "update expense set tags = $1 where slug = $2 returning slug", form.Tags, form.Slug) == "" {
http.NotFound(w, r)
}
mustRenderStandaloneTemplate(w, r, "tags/view.gohtml", form)
}
func ServeExpenseAttachment(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
slug := params[0].Value
conn := getConn(r)
var contentType string
var content []byte
if notFoundErrorOrPanic(conn.QueryRow(r.Context(), `
select mime_type
, content
from expense
join expense_attachment using (expense_id)
where slug = $1
`, slug).Scan(&contentType, &content)) {
http.NotFound(w, r)
return
}
w.Header().Set("Content-Type", contentType)
w.Header().Set("Content-Length", strconv.FormatInt(int64(len(content)), 10))
w.WriteHeader(http.StatusOK)
w.Write(content)
}