galchemy

-module(galchemy@examples@simple_select).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src\\galchemy\\examples\\simple_select.gleam").
-export([build_query/0, row_decoder/0, run/1, main/0]).

-file("src\\galchemy\\examples\\simple_select.gleam", 13).
-spec build_query() -> galchemy@ast@expression:select_query().
build_query() ->
    Users = galchemy@dsl@table:as_(
        galchemy@dsl@table:table(<<"users"/utf8>>),
        <<"u"/utf8>>
    ),
    Id = galchemy@dsl@table:int(Users, <<"id"/utf8>>),
    Name = galchemy@dsl@table:text(Users, <<"name"/utf8>>),
    Active = galchemy@dsl@table:bool(Users, <<"active"/utf8>>),
    _pipe = galchemy@dsl@select:select(
        [galchemy@dsl@expr:item(galchemy@dsl@expr:col(Id)),
            galchemy@dsl@expr:item(galchemy@dsl@expr:col(Name))]
    ),
    _pipe@1 = galchemy@dsl@select:from(_pipe, Users),
    _pipe@2 = galchemy@dsl@select:where_(
        _pipe@1,
        galchemy@dsl@predicate:'and'(
            galchemy@dsl@predicate:eq(
                galchemy@dsl@expr:col(Active),
                galchemy@dsl@expr:bool(true)
            ),
            galchemy@dsl@predicate:ilike(
                galchemy@dsl@expr:col(Name),
                galchemy@dsl@expr:text(<<"A%"/utf8>>)
            )
        )
    ),
    _pipe@3 = galchemy@dsl@select:order_by(
        _pipe@2,
        galchemy@dsl@select:asc(galchemy@dsl@expr:col(Id))
    ),
    galchemy@dsl@select:limit(_pipe@3, 20).

-file("src\\galchemy\\examples\\simple_select.gleam", 32).
-spec row_decoder() -> gleam@dynamic@decode:decoder({integer(), binary()}).
row_decoder() ->
    _pipe = gleam@dynamic@decode:at(
        [0],
        {decoder, fun gleam@dynamic@decode:decode_int/1}
    ),
    gleam@dynamic@decode:then(
        _pipe,
        fun(Id) ->
            _pipe@1 = gleam@dynamic@decode:at(
                [1],
                {decoder, fun gleam@dynamic@decode:decode_string/1}
            ),
            gleam@dynamic@decode:map(_pipe@1, fun(Name) -> {Id, Name} end)
        end
    ).

-file("src\\galchemy\\examples\\simple_select.gleam", 40).
-spec run(pog:connection()) -> {ok, pog:returned({integer(), binary()})} |
    {error, galchemy@sql@postgres:postgres_error()}.
run(Connection) ->
    galchemy@sql@postgres:execute_with(
        {select, build_query()},
        row_decoder(),
        Connection
    ).

-file("src\\galchemy\\examples\\simple_select.gleam", 44).
-spec main() -> nil.
main() ->
    gleam_stdlib:println(<<"Simple select example"/utf8>>),
    gleam_stdlib:println(
        gleam@string:inspect(galchemy:compile({select, build_query()}))
    ).