155 lines
4.0 KiB
Elixir
155 lines
4.0 KiB
Elixir
defmodule WikiWeb.PageController do
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use WikiWeb, :controller
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alias Wiki.Repo
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alias Wiki.Content
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alias Wiki.Content.{Page, Upload}
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plug :get_page
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when action in [
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:show,
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:edit,
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:update,
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:delete,
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:create_upload,
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:get_upload,
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:delete_upload
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]
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plug :get_upload_plug when action in [:get_upload, :delete_upload]
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defp get_page(%Plug.Conn{path_params: %{"id" => id}} = conn, _opts) do
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case Content.get_page(id) do
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nil ->
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conn
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|> send_resp(404, "Not found")
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|> halt()
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page ->
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key = get_session(conn, :content_encryption_key)
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page = %Page{page | content_encryption_key: key}
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page =
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if action_name(conn) in [:show, :edit] do
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Page.decrypt_content(page)
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else
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page
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end
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assign(conn, :page, page)
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end
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end
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defp get_upload_plug(%Plug.Conn{path_params: %{"upload_id" => id}} = conn, _opts) do
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page = conn.assigns.page
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case Content.get_upload(page, id) do
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nil ->
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conn
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|> send_resp(404, "Not found")
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|> halt()
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upload ->
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assign(conn, :upload, upload)
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end
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end
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def index(conn, _params) do
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pages = Content.list_pages()
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render(conn, "index.html", pages: pages)
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end
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def new(conn, params) do
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changeset = Content.change_page(%Page{}, params, encrypt: false)
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render(conn, "new.html", changeset: changeset)
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end
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def create(conn, %{"page" => page_params}) do
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key = get_session(conn, :content_encryption_key)
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page_params =
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page_params
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|> Map.put("user_id", conn.assigns.current_user.id)
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|> Map.put("content_encryption_key", key)
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case Content.create_page(page_params) do
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{:ok, page} ->
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conn
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|> put_flash(:info, "Page created successfully.")
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|> redirect(to: Routes.page_path(conn, :show, page))
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{:error, %Ecto.Changeset{} = changeset} ->
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render(conn, "new.html", changeset: changeset)
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end
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end
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def show(conn, _params) do
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page = Repo.preload(conn.assigns.page, [:uploads, :pages_linked_from])
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render(conn, "show.html", page: page)
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end
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def edit(conn, _params) do
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page = conn.assigns.page |> Repo.preload(:uploads)
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changeset = Content.change_page(page)
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render(conn, "edit.html", page: page, changeset: changeset)
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end
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def update(conn, %{"page" => page_params}) do
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page = conn.assigns.page
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case Content.update_page(page, page_params) do
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{:ok, page} ->
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conn
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|> put_flash(:info, "Page updated successfully.")
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|> redirect(to: Routes.page_path(conn, :show, page))
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{:error, %Ecto.Changeset{} = changeset} ->
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render(conn, "edit.html", page: page, changeset: changeset)
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end
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end
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def create_upload(conn, %{"file" => %Plug.Upload{} = file}) do
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page = conn.assigns.page
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key = get_session(conn, :content_encryption_key)
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key = Base.decode16!(key, case: :lower)
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changeset =
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Upload.create_from_plug(file, key)
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|> Upload.changeset(%{page_id: page.id})
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{:ok, _upload} = Repo.insert(changeset)
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redirect(conn, to: Routes.page_path(conn, :edit, page.id))
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end
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def get_upload(conn, _params) do
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upload = conn.assigns.upload
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key = get_session(conn, :content_encryption_key)
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key = Base.decode16!(key, case: :lower)
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data = Upload.decrypt_content(upload, key)
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conn
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|> put_resp_header("content-type", upload.content_type)
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|> send_resp(200, data)
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end
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def delete_upload(conn, _params) do
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page = conn.assigns.page
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upload = conn.assigns.upload
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Upload.delete_file(upload)
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Repo.delete(upload)
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redirect(conn, to: Routes.page_path(conn, :edit, page.id))
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end
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def delete(conn, _params) do
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page = conn.assigns.page
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{:ok, _page} = Content.delete_page(page)
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conn
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|> put_flash(:info, "Page deleted successfully.")
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|> redirect(to: Routes.page_path(conn, :index))
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end
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end
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