apis/flake.nix

{
  description = "Miscellaneous utility APIs hosted on jichan.org";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    rust-overlay.url = "github:oxalica/rust-overlay";
  };

  outputs = { self, nixpkgs, rust-overlay }:
    let
      overlays = [ (import rust-overlay) ];
      system = "x86_64-linux";
      pkgs = import nixpkgs {
        inherit system overlays;
      };
      rustSettings = with pkgs; {
        src = ./.;
        nativeBuildInputs = [ pkg-config ];
        buildInputs = [ openssl ];
        cargoHash = nixpkgs.lib.fakeHash;
      };
      meta = with nixpkgs.lib; {
        homepage = "https://jichan.org";
        license = [ licenses.gpl3 ];
        platforms = [ system ];
        maintainers = with maintainers; [ elnudev ];
      };
    in {
      devShells.${system}.default = with pkgs; mkShell {
        packages = [
          (pkgs.rust-bin.stable.latest.default.override {
            extensions = [ "rust-src" ];
          })
          cargo-edit
          bacon
        ];
        inputsFrom = with self.packages.${system}; [ tatoeba images ];
      };
      packages.${system} = {
        tatoeba = pkgs.rustPlatform.buildRustPackage (rustSettings // {
          pname = "tatoeba";
          version = "0.1.0";
          buildAndTestSubdir = "tatoeba";
          cargoHash = "sha256-NpXTntuubCSaAPATjJ9g6067qz0vrX9XT3lE3un79Qc=";
          meta = meta // {
            description = "A proxy of the Tatoeba API with no CORS restrictions.";
          };
        });
        images = pkgs.rustPlatform.buildRustPackage (rustSettings // {
          pname = "images";
          version = "0.1.0";
          buildAndTestSubdir = "images";
          cargoHash = "sha256-fqtozAkmFUiJSj1qfRlPhmyD12wD57p0IPDMUyvIdO0=";
          meta = meta // {
            description = "An API for fetching images of a query, sourced from Microsoft Bing.";
          };
        });
      };
      nixosModules.default = { config, ... }: let
        lib = nixpkgs.lib;
      in {
        # tatoeba
        options.services.tatoeba = {
          enable = lib.mkEnableOption (lib.mdDoc "tatoeba service");
          package = lib.mkOption {
            type = lib.types.package;
            default = self.packages.${system}.tatoeba;
            defaultText = "pkgs.tatoeba";
            description = lib.mdDoc ''
              The tatoeba package that should be used.
            '';
          };
          port = lib.mkOption {
            type = lib.types.port;
            default = 3001;
            description = lib.mdDoc ''
              The port at which to run.
            '';
          };
        };
        config.systemd.services.tatoeba = let
          cfg = config.services.tatoeba;
          pkg = self.packages.${system}.tatoeba;
        in lib.mkIf cfg.enable {
          description = pkg.meta.description;
          after = [ "network.target" ];
          wantedBy = [ "network.target" ];
          serviceConfig = {
            ExecStart = ''
              ${cfg.package}/bin/tatoeba --port ${builtins.toString cfg.port}
            '';
            Restart = "always";
            DynamicUser = true;
          };
        };

        # images
        options.services.images = {
          enable = lib.mkEnableOption (lib.mdDoc "images service");
          package = lib.mkOption {
            type = lib.types.package;
            default = self.packages.${system}.images;
            defaultText = "pkgs.images";
            description = lib.mdDoc ''
              The images package that should be used.
            '';
          };
          port = lib.mkOption {
            type = lib.types.port;
            default = 3002;
            description = lib.mdDoc ''
              The port at which to run.
            '';
          };
        };
        config.systemd.services.images = let
          cfg = config.services.images;
          pkg = self.packages.${system}.images;
        in lib.mkIf cfg.enable {
          description = pkg.meta.description;
          after = [ "network.target" ];
          wantedBy = [ "network.target" ];
          serviceConfig = {
            ExecStart = ''
              ${cfg.package}/bin/images --port ${builtins.toString cfg.port}
            '';
            Restart = "always";
            DynamicUser = true;
          };
        };
      };
    };
}