Commit Graph

174 Commits

Author SHA1 Message Date
jordi fita mas e93a798223 Accept “invalid” quantity, price, and discount on invoice update
This is for “free products”, where the user adds an invoice row, does
not select a product from the search, and clicks the update button.
Numerus should select “appropriate” values for those that are left
unspecified.

I also no longer require the product_id to be an integer; if it is
empty, then it is assumed to be a “free product”.
2023-04-24 20:40:10 +02:00
jordi fita mas 7d895fe5f9 Use HTMx to add product rows “inline” in the invoice form
I actually find more comfortable to select the product from the list
presented up until now, but this is mostly because i have very few
products and the list is not too long, so the idea is that with
JavaScript we will dynamically add an empty product row to the invoice
and then use the name field to search the product by name.

I have the feeling that i am doing something wrong because i ended up
with a lot of HTMx attribute for what i feel is not that much work,
but for now it will work.

I have added the `Is` field to `InputField` in order to include the `id`
attribute to the HTML element, because the HTMLAttributes are attached
to the `input`, not the `div`, and i felt like this one should also be
a custom element based on div, like all the others.

These is not yet any keyboard control to select the search results.

I am not happy with having the search of products in a different URL
than the index, specially since they use the exact same SQL query and
ProductFilter struct, but i did not know how else ask for a different
representation without resorting to the more complicated MIME types.
2023-04-24 02:00:38 +02:00
jordi fita mas 2ced61d304 Add the product filter form
I need a way to search products by name in the invoice form, when the
user adds or changes a product.  Since this is something that i have to
add too to the product list, i added it now so the function will already
be ready.
2023-04-23 03:20:01 +02:00
jordi fita mas 90982b49ff Move the product_id field from invoice_product to a separate table
We are going to allow invoices with products that are not (yet) inserted
into the products table.

We always allowed to have products in invoices with a totally different
name, description, price, and whatnot, but until now we had the product
id in these invoice lines for statistics purposes.

However, Oriol raised the concern that this requires for the products
to be inserted before we can create an invoice with them, and we do not
plan to have a “create product while invoicing” feature, thus it would
mean that people would need to cancel the new invoice, create the new
product, and then start the invoice again from scratch.

The compromise is to allow products in the invoice that do not have a
product_id, meaning that at the time the invoice was created they were
not (yet) in the products table.  Oriol sees this stop-invoice-create-
product issue more important than the accurate statistics of product
sales, as it will probably be only one or two units off, anyway.

I did not want to allow NULL values to the invoice product’s product_id
field, because NULL means “dunno” instead of “no product”, so i had to
split that field to a separate table that relates an invoice product
with a registered product.
2023-04-19 19:30:12 +02:00
jordi fita mas 835bab357e Only return HTTP 422 while validating the invoice’s form if not HTMx 2023-04-19 19:18:29 +02:00
jordi fita mas 754da87e45 Add validation for minimum length of contact’s name 2023-04-18 21:01:29 +02:00
jordi fita mas 149557e42e “Integrate” the tags’ condition into the input field
We have reconsidered the toggle thing and instead moved the selection
into a little menu on top of the input, like the input’s label does à
la Material Design.

I just moved the checkboxes into a new details, that works as a menu,
but i had to add the type="search" to the existing input in the tags
field, or the CSS would style the checkboxes as well.

I do not do anything when the checkbox selection changes because that
already triggers a POST to the server that returns the new HTML with
the checkbox changed, and the JavaScript only has to retrieve that new
structure, exactly as it does in the initial rendering.

Since we want to add a little description to the options, i no longer
can use the same SelectOption in ToggleField, even though i could have
reused the Group element, but that felt wrong.
2023-04-16 19:01:11 +02:00
jordi fita mas 46fe90c867 Remove the fuzzy tag of a Catalan translation 2023-04-15 20:45:19 +02:00
jordi fita mas 5e01965d7e Replace use of <select> for tags “and” and “or” with checkboxes
I realized that using a select for just two, short, options is overkill:
the select and its options use a lot more real state than the two
radios, which can have tooltips (not yet, though).

Since i am going to replace this field with a custom element that has
a toggle-like aspect, i already added the is="numerus-toggle" attribute
and use it for stying the non-JavaScript field.
2023-04-15 04:05:59 +02:00
jordi fita mas 8f7933ffe2 Allow to select AND or OR for tags filter
This is because Oriol thinks that there may be cases where you want to
search invoices and such that have any of the selected labels, not all
of them, so we agreed on adding an option to choose.

The idea is that it will be a toggle, but this requires JavaScript and
this commit adds it as a dropdown as a first non-JavaScript step.
2023-04-14 02:40:48 +02:00
jordi fita mas d20573aa99 Allow editing invoice tags inline from the index table
I use the same pattern as HTMx’s “Click to Edit” example[0], except that
my edit form is triggered by submit and by focus out of the tags input.

I could not, however, use the standard focus out event because it would
also trigger when removing a tag with the mouse, as for a moment the
remove button has the focus and the search input dispatches a bubbling
focusout.  I had to resort to a custom event for that, but i am not
happy with it.

The autofocus attribute seems to do nothing in this case, so i need to
manually change the focus to the new input with JavaScript.  However,
this means that i can not use the same input ID for all the forms
because getElementById would always return the first in document order,
changing the focus to that same element and automatically submit the
form due to focus out.  That’s why in this form i append the invoice’s
slug to the input’s ID.

Finally, this is the first time i am using an HTMx-only solution and i
needed a way to return back just the HTML for the <td>, without <title>,
breadcrumbs, or <dialog>.  In principle, the template would be the
“layout”, but then i would need to modify everything to check whether
the template file is empty, or something to that effect, so instead i
created a “standalone” template for these cases.

[0]: https://htmx.org/examples/click-to-edit/
2023-04-11 10:46:27 +02:00
jordi fita mas bc48dd4089 Replace tag relations with array attributes
It all started when i wanted to try to filter invoices by multiple tags
using an “AND”, instead of “OR” as it was doing until now.  But
something felt off and seemed to me that i was doing thing much more
complex than needed, all to be able to list the tags as a suggestion
in the input field—which i am not doing yet.

I found this article series[0] exploring different approaches for
tagging, which includes the one i was using, and comparing their
performance.  I have not actually tested it, but it seems that i have
chosen the worst option, in both query time and storage.

I attempted to try using an array attribute to each table, which is more
or less the same they did in the articles but without using a separate
relation for tags, and i found out that all the queries were way easier
to write, and needed two joins less, so it was a no-brainer.

[0]: http://www.databasesoup.com/2015/01/tag-all-things.html
2023-04-07 21:31:35 +02:00
jordi fita mas 4b4d7ad87d Refactor duplicated logic in invoice for HTMx trigger and location 2023-04-06 12:20:40 +02:00
jordi fita mas 2df6947577 Create constants for the HTMX request and response headers used
It works better with an IDE, and less chance of mistyping something
without notice.
2023-04-06 12:07:20 +02:00
jordi fita mas 233e7723c3 Use HX-Location instead of HX-Refresh when editing invoices
This makes reload only the <main> portion of the page, instead of the
whole thing, which to me looks faster; haven’t really measured it.

Like with duplicate, i had to add the location query argument when
inside the view page in order to return back to the same page, not the
index.
2023-04-05 10:29:03 +02:00
jordi fita mas dbfa58699c Show the duplicate invoice form in a dialog
Had to add a new hidden field to the form to know whether, when the
request is HTMx-triggered, to refresh the page, as i do when duplicating
from the index, or redirect the client to the new invoice’s view page,
but only if i was duplicating from that same page, not the index.

Since i now have to target main when redirecting to the view page, so
i had to add a location structure with the required json fields and all
that, when “refreshing” i actually tell HTMx to open the index page
again, which seems faster, now that i am used to boosted links.
2023-04-04 14:39:55 +02:00
jordi fita mas b6668e72ef Trigger filter form on change and search, as well as submit as before
Changed the invoice number field’s type to search to add the delete icon
on Chromium.  Firefox does not add that icon, but i do not care; it is
still better that type="text".

Had to emit the change event to the numerus-tag field, otherwise the
form would not detect the change.

I also can not use keyup as a trigger because the changed modifier can
not be used in the <form>, as nothing ever changes, i do not know how to
trigger the form from children (i.e., data-hx-trigger on the <input>
does nothing), and i can not trigger for just any keyup, or i would
make the request even if they only moved the cursor with the arrow keys,
which is very confusing as Firefox resets the position (this may be due
the fact that i reload the whole <main>, but still).
2023-04-03 12:45:15 +02:00
jordi fita mas ca0298213e Filter out nulls in tax array when viewing invoice
This is for the unusual case of products without taxes, that PostgreSQL
by default would generate an array with a single null value in it, but
then pgx would not be able to set that null to the string variable.
2023-04-01 16:07:26 +02:00
jordi fita mas c453715ee1 Remove the number field from new invoice form
Initially, this field was meant to be left almost always blank, except
for when we deleted invoiced and had to “replace” its number with a new
invoice; using the automatic numbering in this cas would not “fill in”
the missing number in the sequence.

However, we decide to not allow removing invoicer not edit their
numbers, therefore, if everything goes as planned, there should not be
any gap in the sequence, and that field is rendered useless.

Oriol suggested making it a read-only field, both for new and edit
forms, but i do not think it makes sense to have a field if you can not
edit it at all, specially in the new invoice dialog, where it would
always be blank.  In the edit form we already show the number in the
title and breadcrumbs, thus no need for the read-only field as
reference.

I still keep a Number member to the form struct, but is now a string
(kind of “a read-only field”, in a way) and just to be written in the
title or breadcrumbs.  I did not like the idea of adding a new SQL
query just for that value.
2023-04-01 15:57:56 +02:00
jordi fita mas 5717a5b9ed Put new invoice and edit invoice forms into a dialog
In this case i have to use the same id for the dialog content in all
pages because, for now, there are a couple of forms that need to replace
it on submit—the new/edit form and the product selection form.

Unfortunately, HTMx does not have support for `formaction` attribute at
this point, so i had to use the workaround described in [0].

[0] https://github.com/bigskysoftware/htmx/issues/623
2023-03-31 13:01:26 +02:00
jordi fita mas b7881c505f Add filters form for invoices
Instead of using links in the invoice tags, that we will replace with a
“click-to-edit field”, with Oriol agreed to add a form with filters that
includes not only the tags but also dates, customer, status, and the
invoice number.

This means i now need dynamic SQL, and i do not think this belongs to
the database (i.e., no PL/pgSQL function for that).  I have looked at
query builder libraries for Golang, and did not find anything that
suited me: either they wanted to manage not only the SQL query but also
all structs, or they managed to confuse Goland’s SQL analyzer.

For now, at least, i am using a very simple approach with arrays, that
still confuses Goland’s analyzer, but just in a very specific part,
which i find tolerable—not that their analyzer is that great to begin
with, but that’s a story for another day.
2023-03-29 16:16:31 +02:00
jordi fita mas a5dc434aa2 Boost the links in the invoice table 2023-03-28 09:57:48 +02:00
jordi fita mas 2417b4ebd2 Remove the link to edit contact from the invoice table
We agreed with Oriol that this link would only serve to confuse people.
I initially added the link because i thought it was a shame to have to
navigate to the contact section to look or change the info of a customer
that you have an invoice for in front of you.  However, it makes little
sense to be able to edit the contact from both sections, and we do not
have a “view page” for contacts to link to, thus the removal.
2023-03-28 09:50:19 +02:00
jordi fita mas 47c23fc4cc Boost the products’ section links and forms
Had to add the editProductPage because now i need to know the slug in
order to build the form’s action link.  I also added the `ProductName`
field because it was less awkward than using `.Form.Name` everywhere.
2023-03-27 09:44:04 +02:00
jordi fita mas a1f70ff654 Add tags for products too
With Oriol we agreed that products should have tags, too, and that the
“tag pool”, as it were, should be shared with the one for invoices and
contacts.

Had to add the `company_id` attribute in the `using` clause for `tag` in
`MustFillFromDatabase`, even though it’s not strictly necessary, because
then PostgreSQL does not know which `company_id` attribute use for the
join with `company`—the one from `product` or the one from `tag`.
2023-03-26 13:51:57 +02:00
jordi fita mas 4131602fa3 Add tags for contacts too
With Oriol we agreed that contacts should have tags, too, and that the
“tag pool”, as it were, should be shared with the one for invoices (and
all future tags we might add).

I added the contact_tag relation and tag_contact function, just like
with invoices, and then realized that the SQL queries that Go had to
execute were becoming “complex” enough: i had to get not only the slug,
but the contact id to call tag_contact, and all inside a transaction.

Therefore, i opted to create the add_contact and edit_contact functions,
that mirror those for invoice and products, so now each “major” section
has these functions.  They also simplified a bit the handling of the
VATIN and phone numbers, because it is now encapsuled inside the
PL/pgSQL function and Go does not know how to assemble the parts.
2023-03-26 01:32:53 +01:00
jordi fita mas 41ce5af2ed Boost the main navigation links with HTMx
I am not sure if, at the end, all pages that now use
mustRenderAppTemplate will be replaced with mustRenderMainTemplate,
but for now i keep them separate to know which routes are already
“boosted”.
2023-03-23 10:55:02 +01:00
jordi fita mas 6e081a1846 Put the edit contact form into a dialog with HTMx
Had to change the data context for that template to include the Slug,
so that the <form> element can set the correct `action` instead of
using the current URI, as it is no longer “correct” (form-wise) when
using HTMx.
2023-03-23 10:46:14 +01:00
jordi fita mas b07fe6cfa2 Show the add contact form in a modal dialog 2023-03-22 14:59:54 +01:00
jordi fita mas b1e3afc48b Show the tax details form in a dialog using HTMx 2023-03-21 11:58:54 +01:00
jordi fita mas 9e757cb9f4 Show the profile form in a dialog using HTMx
Had to split the actual page content and the breadcrumbs because they
do not belong in a dialog.  However, i had to change all templates to
do that.
2023-03-20 13:09:52 +01:00
jordi fita mas 356d0a0892 Handle case of no tag given for invoice
In that case, strings.Split() return an array with a single empty string
element, that does not pass the domain check for tag_name in the
database.

And an invoice with no tags would get an array of a single NULL in
array_agg, so i had to convert it to an empty string in order for it
to work as expected.
2023-03-19 23:10:01 +01:00
jordi fita mas 8efae0485e Add the edit form for invoices
I had to change the way /invoices/new and /invoices/batch are handled,
because httprouter was not happy with the new POST /invoices/:slug/edit
route, claiming that /invoices/:slug conflicts with the previously
existing routes.

I also could not make it work with the PATCH method, even though i
correctly added the patchMethod override function, therefore editing
invoices is also weird because i have to take into account the “quick”
invoice status change.

I use the same form for both new and edit invoices, because the only
changes are that we can not edit the invoice date and number, by
Oriol’s design, but must be able to change the status; very similar
forms.
2023-03-13 15:00:35 +01:00
jordi fita mas 1ab48d2947 Add the String() method to InputField 2023-03-13 14:55:10 +01:00
jordi fita mas c685fc496b Correctly format the scanned value of date and time InputFields 2023-03-13 14:54:28 +01:00
jordi fita mas 2bc05e948c Add invoice tags
I followed the same restrictions as Gitea’s topics, arbitrarily, because
if it is enough for repositories it should be for invoices too,
apparently.
2023-03-10 14:02:55 +01:00
jordi fita mas 5dedaefc22 Add button to download many invoices as PDF in a ZIP archive 2023-03-09 12:11:53 +01:00
jordi fita mas 0c8edb9cae Add option to duplicate an invoice
With Oriol we agreed that a duplicate is just the new invoice form
prefilled with the data from another invoices, but without the number or
the date.
2023-03-08 11:26:02 +01:00
jordi fita mas d725dcf529 Add missing call to PaymentMethod.FillValue 2023-03-08 11:19:59 +01:00
jordi fita mas 039bf3abbd Add the “menu” to change invoice statuses 2023-03-07 11:52:09 +01:00
jordi fita mas f77f933e4a Add the payment method to invoices 2023-03-05 18:50:57 +01:00
jordi fita mas 93e92cf62d Move call to mustGetTaxOptions of AddProducts
I was trying to query the database while the connection was still busy
quering the products.
2023-03-05 18:43:22 +01:00
jordi fita mas 31ef3ea47a Add company’s default payment method
I had to use a deferrable foreign key because the payment methods have
a reference to the company, and the company now a circular reference to
payment method.
2023-03-04 22:15:52 +01:00
jordi fita mas 9894925742 Add the payment method relation and corresponding form 2023-03-03 16:49:06 +01:00
jordi fita mas b84f1774f9 Replace static legal disclaimer with a database field 2023-03-02 10:24:44 +01:00
jordi fita mas d6034ad732 Add discount and tax classes columns to invoice
This was actually the (first) reason we added the tax classes: to show
them in columns on the invoice—without the class we would need a column
for each tax rate, even though they are the same tax.

The invoice design has the product total with taxes at the last column,
above the tax base, that i am not so sure about, but it seems that it
has not brought any problem whatsoever so far, so it remains as is.

Had to reduce the invoice’s font size to give more space to the table
or the columns would be right next to each other.  Oriol also told me
to add more vertical spacing to the table’s footer.
2023-03-01 14:08:12 +01:00
jordi fita mas e11a3c57f5 Add validation of single tax from each class
We only allow a single tax of each class in products and invoices,
because it does not make sense to add two different VAT to the same
product, for instance.
2023-03-01 11:55:26 +01:00
jordi fita mas 79ea2f366a Add grouping for form’s select field
We will only allow to select a tax from each of the tax classes, but
the user needs to know what class each tax belongs to, and grouping
the taxes by class in the select helps with that.
2023-03-01 11:40:23 +01:00
jordi fita mas 11d51df7fa Introduce the concept of tax class
We want to show the percentage of the tax as columns in the invoice,
but until now it was not possible to have a single VAT column when
products have different VAT (e.g., 4 % and 10 %), because, as far
as the application is concerned, these where ”different taxes”.  We
also think it would be hard later on to compute the tax due to the
government.

So, tax classes is just a taxonomy to be able to have different names
and rates for the same type of tax, mostly VAT and retention in our
case.
2023-02-28 12:02:27 +01:00
jordi fita mas 0d4fb124b4 Keep all “new invoice actions” on the same /new URI 2023-02-27 13:13:28 +01:00
jordi fita mas bc7ed0f06f Tell Goland to go fuck itself with the unhandled errors in close 2023-02-27 12:55:18 +01:00
jordi fita mas 2ef75efda8 Sort invoices so that the first is the most recent 2023-02-27 12:48:56 +01:00
jordi fita mas c7ac82d6ea Redirect to the newly created invoice on add
It makes more sense to see the invoice once created than to return to
the list of invoices and having to look for it.
2023-02-27 12:45:32 +01:00
jordi fita mas c1a64dd51d Add --format parameter to WeasyPrint
Apparently, in older version of WeasyPrint it was possible to output
either PNG or PDF, so they had that parameter.  In more recent versions,
the only acceptable is PDF, but they removed the fucking parameter
between versions 51 and 52, to it _will_ fail in recent version of
WeasyPrint.

For now, i am using the same version that Debian 11 does, and let’s
hope it stays like this a long time. (It won’t, of course, but well….)
2023-02-26 17:42:38 +01:00
jordi fita mas 4d2379555e Convert invoices to PDF with WeasyPrint
Although it is possible to just print the invoice from the browser, many
people will not even try an assume that they can not create a PDF for
the invoice.

I thought of using Groff or TeX to create the PDF, but it would mean
maintaining two templates in two different systems (HTML and whatever i
would use), and would probably look very different, because i do not
know Groff or TeX that well.

I wish there was a way to tell the browser to print to PDF, and it can
be done, but only with the Chrome Protocol to a server-side running
Chrome instance.   This works, but i would need a Chrome running as a
daemon.

I also wrote a Qt application that uses QWebEngine to print the PDF,
much like wkhtmltopdf, but with support for more recent HTML and CSS
standards.  Unfortunately, Qt 6.4’s embedded Chromium does not follow
break-page-inside as well as WeasyPrint does.

To use WeasyPrint, at first i wanted to reach the same URL as the user,
passing the cookie to WeasyPrint so that i can access the same invoice
as the user, something that can be done with wkhtmltopdf, but WeasyPrint
does not have such option.  I did it with a custom Python script, but
then i need to package and install that script, that is not that much
work, but using the Debian-provided script is even less work, and less
likely to drift when WeasyPrint changes API.

Also, it is unnecessary to do a network round-trip from Go to Python
back to Go, because i can already write the invoice HTML as is to
WeasyPrint’s stdin.
2023-02-26 17:26:09 +01:00
jordi fita mas fffab62135 Use left join between products and taxes
A product can have no tax.
2023-02-25 03:20:34 +01:00
jordi fita mas 419ac3ed46 Adjust invoice.css to work with WeasyPrint too
I am planning to use WeasyPrint to “generate PDF” from the same HTML
that the user view, but it seems that it does not support flex’s gap
and some other properties that i had to change to work in both user
agents.

I also moved the invoice’s “footer” inside the last product’s body
because i do not want the footer to be a “widow”.
2023-02-25 03:16:20 +01:00
jordi fita mas 191401abe9 Temporarily switch to admin role to register types
The authenticator role does not have access to the numerus schema, so
it can not see the oid of discount_rate, for instance.
2023-02-24 13:17:37 +01:00
jordi fita mas 18fba2964f Add invoice view, with print CSS
Had to group name and description rows in tbody because i do not want
to break them on pagination.

I also could not use tfoot for subtotal, taxes, and total because then
they appear on every page.

The disclaimer should appear only at the very bottom of the last page,
but i do not know how to do that; using position fixed shows it on
every page.
2023-02-24 12:22:15 +01:00
jordi fita mas 985f843e8e Show the invoice subtotal, taxes, and total when creating it 2023-02-23 15:31:57 +01:00
jordi fita mas 8dbf8ef2d0 Add currency_pattern to language relation
The design calls for rendering all amounts with their currency symbol,
but golang.org/x/text’s currency package always render the symbol in
front, which is wrong in Catalan and Spanish, and a lot of other
languages.

Consulting the Internet, the most popular package for that is
accounting[0], which is almost as useless because they confuse locale
with the currency’s country of origin’s “usual locale” (e.g., en-US for
USD), which is also wrong: in Catalan i need to write USD prices as
"1.234,56 $" regardless of what Americans do.

With accounting i have the recourse of initializing the struct that
holds all the “locale” information, which is also wrong because i have
to define the decimal and thousands separators, something that depends
only on the locale, next to the currency’s precision, that is
locale-independent.  But, since all CLDR data from golang.org/x/text
is inside an internal package, i can not access it and would need to
define all that information myself, which defeats the purpose of using
an external package.

Since for now i only need the format pattern for currency, i just saved
it into the database of available languages, that i do not expect to
grow too much.

[0]: https://github.com/leekchan/accounting
2023-02-23 12:12:33 +01:00
jordi fita mas 97ef02b0f9 Add views to compute taxes and total amount of invoices
They are not functions because i need to join them with the main
invoice relation, and although possible is a bit more awkward with
functions.

The taxes have their own relation because i will need them grouped by
their name in the PDF, so it will probably be a select for that
relation.
2023-02-22 14:39:38 +01:00
jordi fita mas 32fdab4217 Reindex product indices when removing
When updating the product list, i forgot to change the index in the
product field’s names and, therefore, i created invoices with only the
products until the first gap.
2023-02-21 13:57:40 +01:00
jordi fita mas b3004486f0 Properly register array and composite PostgreSQL types with pgtype
I have moved everything into a different file, even though it is related
to “db”, because it was starting to get a bit ugly.

Apparently i was doing too much work and had to read the code to
understand what i was supposed to do, because pgtypes’ documentation,
as all other projects from the same author, is almost non-existent.
2023-02-20 11:42:21 +01:00
jordi fita mas 98ac17a129 Call add_invoice when adding invoice from Go
I needed to add binary encoding function for the new_invoice_product
type, and currently it is not correct: i hardcoded the OID values, but
they are going to be different on a different database.
2023-02-19 23:53:06 +01:00
jordi fita mas 045bf7ff6a Add the formnovalidate attribute to update and add products buttons
They are to complete the invoice, so it can be in an invalid date, but
we do not want to force people to finish all required inputs before they
can add products or update quantities, do we?

Now had to add the empty option label for customer in all cases, because
it could be empty, although that should be done regardless in case
someone has a browser that does not validate fields.
2023-02-14 12:55:19 +01:00
jordi fita mas 4463c7ee0b Use array_agg to get the taxes for the product’s form 2023-02-14 12:49:29 +01:00
jordi fita mas 4db0a8fb5a Refactor checking for pgx.ErrNoRows in a function 2023-02-14 12:46:11 +01:00
jordi fita mas 13fa1d6b89 Add PL/pgSQL functions to add and edit products
I am going to add similar functions for invoices, as i will need to
add the taxes for their products and their own taxes, thus the Go code
will begin to be “too much work” and i feel better if that is in
PL/pgSQL.

If i have these functions for invoices, there is no point on having to
do almost the same work, albeit less, for products.
2023-02-14 12:39:54 +01:00
jordi fita mas 989c1717e5 Rename mustGetInvoiceEntries to mustCollectInvoiceEntries
I have seen that pgx has the CollectRows function to do the same job as
that function.  I can not use CollectRows because it uses generics and
requires Go 1.18, but i have adopted the same nomenclature they use.
2023-02-14 12:34:50 +01:00
jordi fita mas e94e3f6ebc Fix time layout in FormValidator.CheckValidDate 2023-02-13 10:34:55 +01:00
jordi fita mas 3891a01fd5 Fix use of API methods not available in Go 1.16
Apparently, url.Values.Has and math.MaxInt was added to Go 1.17,
but on Debian Bullseye there is only Go 1.16.  I do not want to
install a new version of Go to the server unless there is an
overwhelming reason, and a couple of methods are not.  Thus, now i use
Go 1.16 too on my development machine, to avoid situations like this.
2023-02-13 10:32:26 +01:00
jordi fita mas 4903c8a3b9 Add the form to add products to an invoice and create invoices too
Still missing: the invoice number, that requires more tables and
possibly a PL/pgSQL function to do it properly.
2023-02-12 21:06:48 +01:00
jordi fita mas 72fbed68ac Add a missing StatusUnprocessableEntity HTTP response code 2023-02-12 21:03:46 +01:00
jordi fita mas c2d8006748 Make FormValidator.CheckValidDate method public 2023-02-12 21:01:20 +01:00
jordi fita mas 5c15b9de20 Add the bare-bones form for invoices 2023-02-11 22:16:48 +01:00
jordi fita mas 4be2597a86 Allow multiple taxes, and even not tax, for products
It seems that we do not agree en whether the IRPF tax should be
something of the product or the contact, so we decided to make the
product have multiple taxes, just in case, and if only one is needed,
then users can just select one; no need to limit to one.
2023-02-08 13:47:36 +01:00
jordi fita mas 73ca559209 Add template for InputField of type textarea 2023-02-07 15:28:22 +01:00
jordi fita mas ae1949024b Allow optional select with empty label
This is not yet necessary, but the empty label is because i do not want
to select a default tax for products—at least, not without a setting for
it.

Since i need to add the required attribute now to select, because
otherwise the browser would allow sending that empty value, i did not
want to do it unconditionally, just in case.
2023-02-05 14:06:33 +01:00
jordi fita mas 60f9792e58 Convert from cents to “price” and back
I do not want to use floats in the Go lang application, because it is
not supposed to do anything with these values other than to print and
retrieve them from the user; all computations will be performed by
PostgreSQL in cents.

That means i have to “convert” from the price format that users expect
to see (e.g., 1.234,56) to cents (e.g., 123456) and back when passing
data between Go and PostgreSQL, and that conversion depends on the
currency’s decimal places.

At first i did everything in Go, but saw that i would need to do it in
a loop when retrieving the list of products, and immediately knew it was
a mistake—i needed a PL/pgSQL function for that.

I still need to convert from string to float, however, when printing the
value to the user.  Because the string representation is in C, but i
need to format it according to the locale with golang/x/text.  That
package has the information of how to correctly format numbers, but it
is in an internal package that i can not use, and numbers.Digit only
accepts numeric types, not a string.
2023-02-05 13:55:12 +01:00
jordi fita mas e9cc331ee0 Add products section
There is still some issues with the price field, because for now it is
in cents, but do not have time now to fix that.
2023-02-04 11:32:39 +01:00
jordi fita mas f611162b0e Move contacts templates in their own directory
This is what directories are for: namespacing; no need for cumbersome
file name prefixes.
2023-02-04 10:48:03 +01:00
jordi fita mas 2799fdb8db Add companyURI for Go code too, not just templates 2023-02-04 10:43:42 +01:00
jordi fita mas 7d17620f48 Add the edit contact page 2023-02-03 13:57:43 +01:00
jordi fita mas 1ab48cfcbc Replace default router with github.com/julienschmidt/httprouter
I would fuck up handling URL parameters and this router has per-method
handlers, that are easier to work with, in some cases.
2023-02-03 12:30:56 +01:00
jordi fita mas 80f14d5818 Use MustGetText to get the company’s slug 2023-02-03 10:51:48 +01:00
jordi fita mas 917db31227 Add cross-request forgery detection
I use the ten first digits of the cookie’s hash, that i believe it is
not a problem, has the advantage of not expiring until the user logs
out, and using a per user session token is explicitly allowed by
OWASP[0].

[0]: https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_Prevention_Cheat_Sheet.html#synchronizer-token-pattern
2023-02-02 11:39:34 +01:00
jordi fita mas 7a439a40cc Use a proper struct for the contact’s form
Our company is a kind-of contact, although it does not appear in the
contact section, thus i could embed the contact form inside the tax
details form to reuse all the common fields.
2023-02-01 14:34:40 +01:00
jordi fita mas 2883438157 Handle tax details and new tax forms with structs and validation
I implemented the Valuer and Scanner interfaces to InputField and
SelectField for better passing values between the database and Go.  I
had a conflict with the Value name and renamed the struct member to Val.

I also had to change the attributes array to be of type
template.HTMLAttr or html/template would replace `form="newtax"`
attribute to `zgotmplz="newtax"` because it deems it “unsafe”.  I do
not like having to use template.HTMLAttr when assigning values, but
i do not know what else i can do now.
2023-02-01 14:15:02 +01:00
jordi fita mas 4f13fa58dc Add autocomplete attributes to profile fields 2023-02-01 11:37:13 +01:00
jordi fita mas b8b3d73e95 Refactor form validation into a new type
I was worried that i was repeating the AddInputErrors function for each
form, because they were basically the same.  I could create a Form type
and make all forms embed it, but i realized that with a separate
validator i would have cleaner validation functions and would not need
the Valid field in the form that i am using only for that method.
2023-02-01 11:30:30 +01:00
jordi fita mas ff5b76b4f5 Use a “proper” struct for the login form
Similar to the profile form, the login form now parses and validates
itself, with the InputField structs that the templates expect.

I realized that i was doing more work than necessary when parsing fields
fro the profile form because i was repeating the operation and the field
name, so now it is a function of InputField.

This time i needed extra attributes for the login form.  I am not sure
that the Go source code needs to know about HTML attributes, but it was
the easiest way to pass them to the template.
2023-02-01 11:02:32 +01:00
jordi fita mas b1c653e7de Add redirect from logout to login 2023-01-31 15:47:29 +01:00
jordi fita mas e0abf98bb1 Add custom function to get the current locale from templates
This is just to set the correct `lang` attribute on the HTML, so that
text readers can do its job and the `(optional)` suffix of labels gets
the correct ”translation”.
2023-01-31 15:45:51 +01:00
jordi fita mas e56e08a68f Tell IDE to shut up about an update without where of a single record 2023-01-31 15:41:05 +01:00
jordi fita mas 9f17f55547 Validate profile form and use templates for fields
Let’s start first with a non-fancy validation method with just if
conditionals instead of bringing yet another complicated library.  I
hope i do not regret it.

I wanted to move all the input field to a template because all that
gobbledygook with the .input div and repeating the label in the
placeholder was starting to annoy me.  Now with error messages was even
more concerning.

I did not know whether the label should be a part of the input fields
or something that the template should do.  At the end i decided that
it makes more sense to be part of the input field because in the error
messages i use that same label, thus the template does not have a say
in that, and, besides, it was just easier to write the template.

The same with the error messages: i’ve seen frameworks that have a map
with the field’s id/name to the error slice, but then it would be
a bit harder to write the template.

I added AddError functions instead of just using append inside the
validator function, and have a local variable for whether it all went
OK, because i was worried that i would leave out the `ok = false`
in some conditions.

I had started writing “constructors” functions for InputField and
SelectField, but then had to add other methods to change the required
field and who knows what else, and in the end it was easier to just
construct the field inline.
2023-01-31 15:40:12 +01:00
jordi fita mas 9aee33511a Move page titles to their respective templates
I have been thinking about that, and it does not make that much sense to
have the titles in the Go source anymore: most of them are static text
that i have to remember to set in the controller each time, and when
the time come i have to face a dynamic title i am sure i will manage
with only the template capabilities—worst comes worst, i can always
define a function.

On the other hand, there is no way i can define a template without its
title and i know that everytime that template is used, no matter what
controller rendered it, it will always have that title.
2023-01-31 13:07:17 +01:00
jordi fita mas 1a7b9f6bdd Rename extension of templates to .gohtml
Apparently, there are tools that only know how to use that extensions
when referring to Go templates.
2023-01-30 16:48:21 +01:00
jordi fita mas 77acbc5ced Change a Go variable to camel case 2023-01-30 16:40:51 +01:00
jordi fita mas 019ba0e520 Remove redundant semicolons from Go source 2023-01-30 16:40:08 +01:00