modules/caddy/caddyfile.nix

let
  HTTPReverseProxyRoute = hosts: upstreams: {
    handle = [
      {
        handler = "subroute";
        routes = [
          {
            handle = [
              {
                handler = "reverse_proxy";
                upstreams = map (upstream: { dial = upstream; }) upstreams;
              }
            ];
          }
        ];
      }
    ];
    match = [{ host = hosts; }];
    terminal = true;
  };
  HTTPRedirectRoute = hosts: goto: {
    handle = [
      {
        handler = "subroute";
        routes = [
          {
            handle = [
              {
                handler = "static_response";
                headers = { Location = [ goto ]; };
                status_code = 302;
              }
            ];
          }
        ];
      }
    ];
    match = [{ host = hosts; }];
    terminal = true;
  };
  HTTPFileServerRoute = hosts: root: {
    handle = [
      {
        handler = "subroute";
        routes = [
          {
            handle = [
              {
                handler = "file_server";
                inherit root;
              }
            ];
          }
        ];
      }
    ];
    match = [{ host = hosts; }];
    terminal = true;
  };

  TCPReverseProxyRoute = ports: upstreams: {
    listen = map (port: "0.0.0.0:${toString port}") ports;
    routes = [
      {
        handle = [
          {
            handler = "proxy";
            proxy_protocol = "v2";
            upstreams = [{ dial = upstreams; }];
          }
        ];
      }
    ];
  };
in
{ pkgs, lib }: {
  apps = {
    http.servers = {
      srv0 = {
        listen = [ ":443" ];
        routes = [
          (HTTPReverseProxyRoute [ "signup.hopescaramels.com" ] [ "192.168.0.4:3035" ])
          (HTTPReverseProxyRoute [ "homebridge.coded.codes" ] [ "localhost:8581" ])
          {
            handle = [
              {
                handler = "subroute";
                routes = [
                  {
                    handle = [
                      {
                        error = "You can't access admin routes from outside the server. Please use SSH tunneling, cURL on the host or similar";
                        handler = "error";
                        status_code = "403";
                      }
                    ];
                    match = [{ path = [ "/_dendrite/admin/*" "/_synapse/admin/*" ]; }];
                    terminal = true;
                  }
                  {
                    handle = [
                      {
                        handler = "reverse_proxy";
                        transport = { protocol = "http"; };
                        upstreams = [{ dial = "localhost:4527"; }];
                      }
                    ];
                  }
                ];
              }
            ];
            match = [{ host = [ "matrix-backend.coded.codes" ]; }];
            terminal = true;
          }
          (HTTPReverseProxyRoute
            [
              "mail.coded.codes"
              "mail.clicks.codes"
              "mail.hopescaramels.com"
            ]
            [ "localhost:1080" ]
          )
          (HTTPReverseProxyRoute [ "logs.clicks.codes" ] [ "localhost:9052" ])
          (HTTPRedirectRoute
            [
              "hopescaramels.com"
              "www.hopescaramels.com"
            ]
            "https://etsy.com/shop/HopesCaramels"
          )
          # (HTTPReverseProxyRoute [ "omv.coded.codes" ] [ "localhost:6773" ])
          # (HTTPReverseProxyRoute [ "jellyfin.coded.codes" ] [ "localhost:8096" ])
          (HTTPReverseProxyRoute [ "codedpc.coded.codes" ] [ "192.168.0.2:3389" ])
          (HTTPReverseProxyRoute [ "testing.coded.codes" ] [ "192.168.0.2:3030" ])
          (HTTPReverseProxyRoute [ "kavita.coded.codes" ] [ "localhost:5000" ])
          {
            handle = [
              {
                handler = "subroute";
                routes = [
                  {
                    handle = [
                      {
                        handler = "subroute";
                        routes = [
                          {
                            handle = [
                              {
                                handler = "rewrite";
                                strip_path_prefix = "/nucleus";
                              }
                            ];
                          }
                          {
                            handle = [
                              {
                                handler = "reverse_proxy";
                                upstreams = [{ dial = "127.0.0.1:10000"; }];
                              }
                            ];
                          }
                        ];
                      }
                    ];
                    match = [{ path = [ "/nucleus/*" ]; }];
                  }
                  {
                    handle = [
                      {
                        handler = "error";
                        error = "This API route does not exist";
                        status_code = 404;
                      }
                    ];
                  }
                ];
              }
            ];
            match = [{ host = [ "api.clicks.codes" ]; }];
            terminal = true;
          }
          {
            handle = [
              {
                handler = "subroute";
                routes = [
                  {
                    handle = [
                      {
                        handler = "subroute";
                        routes = [
                          {
                            handle = [
                              {
                                handler = "rewrite";
                                strip_path_prefix = "/nucleus";
                              }
                            ];
                          }
                          {
                            handle = [
                              {
                                handler = "reverse_proxy";
                                upstreams = [{ dial = "192.168.0.2:10000"; }];
                              }
                            ];
                          }
                        ];
                      }
                    ];
                    match = [{ path = [ "/nucleus/*" ]; }];
                  }
                  {
                    handle = [
                      {
                        handler = "error";
                        error = "This API route does not exist";
                        status_code = 404;
                      }
                    ];
                  }
                ];
              }
            ];
            match = [{ host = [ "api.coded.codes" ]; }];
            terminal = true;
          }
          (HTTPRedirectRoute
            [
              "www.clicks.codes"
            ]
            "https://clicks.codes{http.request.uri}"
          )
          (HTTPReverseProxyRoute [ "clicks.codes" ] [ "127.0.0.1:3000" ])
          {
            handle = [
              {
                handler = "subroute";
                routes = [
                  {
                    handle = [
                      {
                        handler = "static_response";
                        status_code = 200;
                        body = builtins.readFile ./coded.codes/.well-known/matrix;
                        headers = { Access-Control-Allow-Origin = [ "*" ]; };
                      }
                    ];
                    match = [{
                      path = [
                        "/.well-known/matrix/server"
                        "/.well-known/matrix/client"
                      ];
                    }];
                    terminal = true;
                  }
                  {
                    handle = [
                      {
                        handler = "static_response";
                        headers = { Location = [ "https://clicks.codes{http.request.uri}" ]; };
                        status_code = 302;
                      }
                    ];
                  }
                ];
              }
            ];
            match = [{ host = [ "coded.codes" ]; }];
            terminal = true;
          }
          (HTTPFileServerRoute [ "matrix.coded.codes" ] (
            pkgs.element-web.override {
              conf = {
                default_server_config = lib.pipe ./coded.codes/.well-known/matrix [
                  builtins.readFile
                  builtins.fromJSON
                ];
              };
            }
          ))
        ];
      };
      srv1 = {
        listen = [ ":80" ];
        routes = [
          (HTTPReverseProxyRoute
            [
              "mail.clicks.codes"
              "mail.coded.codes"
              "mail.hopescaramels.com"
              "autoconfig.coded.codes"
              "autoconfig.clicks.codes"
              "autoconfig.hopescaramels.com"
              "imap.coded.codes"
              "imap.clicks.codes"
              "imap.hopescaramels.com"
              "pop.coded.codes"
              "pop.clicks.codes"
              "pop.hopescaramels.com"
              "smtp.coded.codes"
              "smtp.clicks.codes"
              "smtp.hopescaramels.com"
            ]
            [ "localhost:1080" ]
          )
        ];
      };
    };
    layer4.servers = {
      imap-143 = (TCPReverseProxyRoute [ 143 ] [ "localhost:1143" ]);
      imap-993 = (TCPReverseProxyRoute [ 993 ] [ "localhost:1993" ]);
      pop-110 = (TCPReverseProxyRoute [ 110 ] [ "localhost:1110" ]);
      pop-995 = (TCPReverseProxyRoute [ 995 ] [ "localhost:1995" ]);
      smtp-25 = (TCPReverseProxyRoute [ 25 ] [ "localhost:1025" ]);
      smtp-465 = (TCPReverseProxyRoute [ 465 ] [ "localhost:1465" ]);
      smtp-587 = (TCPReverseProxyRoute [ 587 ] [ "localhost:1587" ]);
    };
    tls.automation.policies = [{
      issuers = [{
        module = "acme";
        challenges.dns.provider = {
          name = "cloudflare";
          api_token = "!!cloudflare_token!!";
        };
      }];
    }];
  };
}