let ( let* ) m f =
  let open Lwt.Infix in
  m >>= function
  | Ok x -> f x
  | Error e ->
      let msg = Format.asprintf "%a" Git_unix.Store.pp_error e in
      Views.error_page msg |> Dream_html.respond

let root _req = Views.root () |> Dream_html.respond

module Repo = struct
  let repo_path req = Dream.param req "repo_name"

  let summary req =
    let branches = Git_helpers.Branch.all_branches (repo_path req) in
    let* commits = Git_helpers.Commit.recent_commits (repo_path req) 10 in
    let authors = [ "John Pork"; "Sebastian Jellybean" ] in
    Views.Repo.summary (repo_path req) branches commits authors
    |> Dream_html.respond

  let refs req = Views.Repo.refs (repo_path req) |> Dream_html.respond
  let log req = Views.Repo.log (repo_path req) |> Dream_html.respond
  let tree req = Views.Repo.tree (repo_path req) |> Dream_html.respond

  let commit req =
    let id = match Dream.query req "id" with Some id -> id | None -> "" in
    let* commit = Git_helpers.Commit.of_id (repo_path req) id in
    Views.Repo.commit (repo_path req) commit |> Dream_html.respond
end

let all_handlers =
  [
    Dream.get "/" root;
    Dream.scope "/:repo_name" []
      Repo.
        [
          Dream.get "/" summary;
          Dream.get "/refs/" refs;
          Dream.get "/log/" log;
          Dream.get "/tree/" tree;
          Dream.get "/commit/" commit;
        ];
    Dream.get "/static/**" (Dream.static "./lib/static");
  ]