ezidam/flake.nix

{
  description = "easy identity and access management";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";

    crane = {
      url = "github:ipetkov/crane";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    flake-utils.url = "github:numtide/flake-utils";

    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs = {
        nixpkgs.follows = "nixpkgs";
        flake-utils.follows = "flake-utils";
      };
    };
  };

  outputs = { self, nixpkgs, crane, flake-utils, rust-overlay, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ (import rust-overlay) ];
        };

        inherit (pkgs) lib;

        craneLib = crane.lib.${system};

        # Get metadata from Cargo.toml
        metadata = craneLib.crateNameFromCargoToml { cargoToml = ./crates/ezidam/Cargo.toml; };

        # Common derivation arguments used for all builds
        commonArgs = {
          src = lib.cleanSourceWith {
            src = craneLib.path ./.; # The original, unfiltered source
            filter = path: type:
              # SQL queries and migrations
              (lib.hasSuffix ".sql" path) ||
              # Offline queries
              (lib.hasInfix "/.sqlx/" path) ||
              # Default Logo
              (lib.hasInfix "/logo/logo.png" path) ||
              # Test assets
              (lib.hasInfix "/tests/" path) ||
              # Tera Templates
              (lib.hasInfix "/templates/" path) ||
              # Static assets
              (lib.hasInfix "/static/" path) ||
              # Default filter from crane (allow .rs files)
              (craneLib.filterCargoSources path type)
            ;
          };

          strictDeps = true;

          buildInputs = with pkgs; [
            # Add additional build inputs here
            sqlite
          ] ++ lib.optionals pkgs.stdenv.isDarwin [
            # Additional darwin specific inputs can be set here
            darwin.apple_sdk.frameworks.Security
            pkgs.libiconv
          ];

          nativeBuildInputs = with pkgs; [
            # Add extra native build inputs here, etc.
            pkg-config
          ];

        } // metadata;

        # Build *just* the cargo dependencies
        cargoArtifacts = craneLib.buildDepsOnly commonArgs;

        # Clippy
        ezidamClippy = craneLib.cargoClippy (commonArgs // {
          inherit cargoArtifacts;
          # Again we apply some extra arguments only to this derivation
          # and not every where else. In this case we add some clippy flags
          # cargoClippyExtraArgs = "--all-targets -- --deny warnings";
        });

        # Build crate
        ezidamBinary = craneLib.buildPackage (commonArgs // {
          cargoArtifacts = ezidamClippy;
        });

        ezidamAssetTemplate = ./crates/ezidam/templates;
        ezidamAssetStatic = ./crates/ezidam/static;

        ezidamAssets = [
          ezidamAssetTemplate
          ezidamAssetStatic
        ];

        ezidam = pkgs.stdenv.mkDerivation {
          inherit ezidamBinary ezidamAssets;
          name = metadata.pname;
          phases = [ "unpackPhase" "installPhase" ];
          dontUnpack = true;
          installPhase = ''
            mkdir -p $out
            cp -rv $ezidamBinary $out
            cp -rv $ezidamAssets $out
          '';
        };

        # Docker image
        dockerImage = pkgs.dockerTools.buildLayeredImage {
          # Meta
          name = metadata.pname;
          tag = metadata.version;
          created = builtins.substring 0 8 self.lastModifiedDate;

          # Content of image
          contents = pkgs.buildEnv {
            name = "image-root";
            paths = [
              ezidamBinary
              ezidamAssets
            ];

            pathsToLink = [ "/bin" ];
          };

          # Container config
          config = {
            Cmd = [ "${ezidamBinary}/bin/ezidam" ];
            Env = [
              "EZIDAM_TEMPLATE_DIR=${ezidamAssetTemplate}"
              "EZIDAM_STATIC_DIR=${ezidamAssetStatic}"
            ];
          };
        };
      in
      {
        apps.default = {
          type = "app";
          program = "${ezidamBinary}/bin/ezidam";
        };

        packages = {
          inherit ezidam dockerImage;
          default = ezidam;
        };

        checks = {
          inherit
          # Build the crate as part of `nix flake check` for convenience
          ezidam
          ezidamClippy;
        };

      });
}