forked from potsda.mn/mobilizon
150 lines
2.9 KiB
Elixir
150 lines
2.9 KiB
Elixir
defmodule Eventos.Addresses do
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@moduledoc """
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The Addresses context.
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"""
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import Ecto.Query, warn: false
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alias Eventos.Repo
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alias Eventos.Addresses.Address
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import Logger
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@geom_types [:point]
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@doc """
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Returns the list of addresses.
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## Examples
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iex> list_addresses()
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[%Address{}, ...]
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"""
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def list_addresses do
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Repo.all(Address)
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end
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@doc """
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Gets a single address.
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Raises `Ecto.NoResultsError` if the Address does not exist.
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## Examples
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iex> get_address!(123)
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%Address{}
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iex> get_address!(456)
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** (Ecto.NoResultsError)
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"""
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def get_address!(id), do: Repo.get!(Address, id)
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@doc """
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Creates a address.
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## Examples
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iex> create_address(%{field: value})
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{:ok, %Address{}}
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iex> create_address(%{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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def create_address(attrs \\ %{}) do
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%Address{}
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|> Address.changeset(attrs)
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|> Repo.insert()
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end
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@doc """
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Updates a address.
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## Examples
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iex> update_address(address, %{field: new_value})
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{:ok, %Address{}}
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iex> update_address(address, %{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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def update_address(%Address{} = address, attrs) do
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address
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|> Address.changeset(attrs)
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|> Repo.update()
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end
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@doc """
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Deletes a Address.
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## Examples
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iex> delete_address(address)
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{:ok, %Address{}}
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iex> delete_address(address)
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{:error, %Ecto.Changeset{}}
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"""
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def delete_address(%Address{} = address) do
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Repo.delete(address)
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end
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@doc """
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Returns an `%Ecto.Changeset{}` for tracking address changes.
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## Examples
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iex> change_address(address)
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%Ecto.Changeset{source: %Address{}}
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"""
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def change_address(%Address{} = address) do
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Address.changeset(address, %{})
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end
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@doc """
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Processes raw geo data informations and return a `Geo` geometry which can be one of `Geo.Point`.
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"""
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def process_geom(%{"type" => type_input, "data" => data}) do
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type =
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if !is_atom(type_input) && type_input != nil do
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try do
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String.to_existing_atom(type_input)
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rescue
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e in ArgumentError ->
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Logger.error("#{type_input} is not an existing atom : #{inspect(e)}")
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nil
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end
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else
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type_input
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end
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if Enum.member?(@geom_types, type) do
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case type do
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:point ->
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process_point(data["latitude"], data["longitude"])
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end
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else
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{:error, nil}
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end
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end
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@doc false
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def process_geom(nil) do
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{:error, nil}
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end
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@spec process_point(number(), number()) :: tuple()
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defp process_point(latitude, longitude) when is_number(latitude) and is_number(longitude) do
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{:ok, %Geo.Point{coordinates: {latitude, longitude}, srid: 4326}}
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end
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defp process_point(_, _) do
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{:error, "Latitude and longitude must be numbers"}
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end
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end
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