galchemy

-module(galchemy@examples@schema_tooling).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src\\galchemy\\examples\\schema_tooling.gleam").
-export([current_schema/0, target_schema/0, main/0]).

-file("src\\galchemy\\examples\\schema_tooling.gleam", 78).
-spec column(
    binary(),
    galchemy@schema@model:column_type(),
    boolean(),
    gleam@option:option(binary()),
    integer()
) -> galchemy@schema@model:column_schema().
column(Name, Data_type, Nullable, Default, Ordinal_position) ->
    {column_schema, Name, Data_type, Nullable, Default, Ordinal_position}.

-file("src\\galchemy\\examples\\schema_tooling.gleam", 9).
-spec current_schema() -> galchemy@schema@model:schema_snapshot().
current_schema() ->
    {schema_snapshot,
        [{table_schema,
                <<"public"/utf8>>,
                <<"users"/utf8>>,
                [column(<<"id"/utf8>>, integer_type, false, none, 1),
                    column(<<"name"/utf8>>, text_type, false, none, 2)],
                {some, {primary_key, <<"users_pkey"/utf8>>, [<<"id"/utf8>>]}},
                [],
                [],
                []}]}.

-file("src\\galchemy\\examples\\schema_tooling.gleam", 28).
-spec target_schema() -> galchemy@schema@model:schema_snapshot().
target_schema() ->
    {schema_snapshot,
        [{table_schema,
                <<"public"/utf8>>,
                <<"users"/utf8>>,
                [column(<<"id"/utf8>>, integer_type, false, none, 1),
                    column(<<"name"/utf8>>, text_type, false, none, 2),
                    column(<<"email"/utf8>>, text_type, false, none, 3)],
                {some, {primary_key, <<"users_pkey"/utf8>>, [<<"id"/utf8>>]}},
                [{unique_constraint,
                        <<"users_email_key"/utf8>>,
                        [<<"email"/utf8>>]}],
                [],
                []}]}.

-file("src\\galchemy\\examples\\schema_tooling.gleam", 50).
-spec main() -> nil.
main() ->
    Operations = galchemy@schema@diff:diff(current_schema(), target_schema()),
    Modules = galchemy@schema@generator@gleam:generate(
        target_schema(),
        galchemy@schema@generator@gleam:default_options(
            <<"app/generated"/utf8>>
        )
    ),
    gleam_stdlib:println(<<"Schema tooling example"/utf8>>),
    gleam_stdlib:println(<<"Diff operations:"/utf8>>),
    gleam_stdlib:println(gleam@string:inspect(Operations)),
    gleam_stdlib:println(<<"Generated modules:"/utf8>>),
    gleam_stdlib:println(gleam@string:inspect(Modules)),
    case galchemy@schema@migration@postgres:plan(
        <<"20260329_add_user_email"/utf8>>,
        current_schema(),
        target_schema()
    ) of
        {ok, Plan} ->
            gleam_stdlib:println(<<"Migration plan:"/utf8>>),
            gleam_stdlib:println(gleam@string:inspect(Plan));

        {error, Error} ->
            gleam_stdlib:println(<<"Migration plan error:"/utf8>>),
            gleam_stdlib:println(gleam@string:inspect(Error))
    end.