From 98c7bf1d0ceed62484a297d2b2561fc66123b832 Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Tue, 27 Oct 2020 19:20:34 +0100
Subject: [PATCH] nixos-module.nix: add

---
 nixos-module.nix          | 115 ++++++++++++++++++++++++++++++++++++++
 ticker-serve/src/main.rs  |   4 +-
 ticker-update/src/main.rs |   2 +-
 3 files changed, 118 insertions(+), 3 deletions(-)
 create mode 100644 nixos-module.nix

diff --git a/nixos-module.nix b/nixos-module.nix
new file mode 100644
index 0000000..e85e702
--- /dev/null
+++ b/nixos-module.nix
@@ -0,0 +1,115 @@
+{ pkgs, config, lib, ... }:
+
+with import ./. { pkgs = import ../../programs/nixpkgs {}; };
+
+let
+  inherit (pkgs.lib) mkOption types;
+  cfg = config.services.ticker;
+  defaultTickerConfig = {
+    db_url = "postgres:///ticker";
+    calendars = {};
+    weekdays = [
+      "Montag" "Dienstag" "Mittwoch" "Donnerstag"
+      "Freitag" "Sonnabend" "Sonntag"
+    ];
+    months = [
+      "Januar" "Februar" "März" "April"
+      "Mai" "Juni" "Juli" "August"
+      "September" "Oktober" "November" "Dezember"
+    ];
+  };
+  tickerConfig = defaultTickerConfig // cfg.config;
+  configFile = pkgs.writeText "config.yaml" (lib.generators.toYAML {} tickerConfig);
+  workDir = pkgs.runCommandLocal "ticker-env" {} ''
+    mkdir $out
+    ln -s ${ticker-serve}/shared/ticker-serve/static $out/
+    ln -s ${configFile} $out/config.yaml
+  '';
+in
+{
+  options.services.ticker = {
+    stateDir = mkOption {
+      type = types.str;
+      default = "/var/lib/ticker";
+      description = ''
+        Directory where ticker files will be placed by default.
+      '';
+    };
+    user = mkOption {
+      type = types.str;
+      default = "ticker";
+      description = "User account under which ticker runs.";
+    };
+    group = mkOption {
+      type = types.str;
+      default = "ticker";
+      description = "Group account under which ticker runs.";
+    };
+    config = mkOption {
+      type = types.attrs;
+      default = defaultTickerConfig;
+    };
+    updateInterval = mkOption {
+      type = types.str;
+      default = "1h";
+      description = "Timer interval";
+    };
+  };
+  
+  config = {
+    users.users.${cfg.user} = {
+      inherit (cfg) group;
+    };
+    users.groups.${cfg.group} = {};
+    
+    services.postgresql = {
+      enable = true;
+    };
+
+    systemd.services.ticker-setup = {
+      wantedBy = [ "multi-user.target" ];
+      after = [ "postgresql.service" ];
+      preStart = let
+        pgsu = config.services.postgresql.superUser;
+        psql = config.services.postgresql.package;
+      in ''
+        mkdir -p ${cfg.stateDir}
+        chown ${cfg.user}:${cfg.group} -R ${cfg.stateDir}
+        if ! test -e "${cfg.stateDir}/db-created"; then
+          ${pkgs.sudo}/bin/sudo -u ${pgsu} ${psql}/bin/createuser --no-superuser --no-createdb --no-createrole ${cfg.user}
+          ${pkgs.sudo}/bin/sudo -u ${pgsu} ${psql}/bin/createdb --owner ${cfg.user} ticker
+          ${pkgs.sudo}/bin/sudo -u ${cfg.user} ${psql}/bin/psql -f ${ticker-serve}/shared/libticker/schema.sql ticker
+          touch "${cfg.stateDir}/db-created"
+        fi
+      '';
+      serviceConfig = {
+        Type = "oneshot";
+        ExecStart = "${pkgs.coreutils}/bin/test -f ${cfg.stateDir}/db-created";
+      };
+    };
+
+    systemd.services.ticker-update = {
+      wantedBy = [ "multi-user.target" ];
+      after = [ "postgresql.service" "ticker-setup.service" ];
+      serviceConfig = {
+        Type = "oneshot";
+        ExecStart = "${ticker-update}/bin/ticker-update";
+        WorkingDirectory = "${workDir}";
+        User = cfg.user;
+        Group = cfg.group;
+      };
+    };
+
+    systemd.services.ticker-serve = {
+      wantedBy = [ "multi-user.target" ];
+      after = [ "postgresql.service" "ticker-setup.service" ];
+      serviceConfig = {
+        Type = "simple";
+        ExecStart = "${ticker-serve}/bin/ticker-serve";
+        WorkingDirectory = "${workDir}";
+        User = cfg.user;
+        Group = cfg.group;
+      };
+    };
+  };
+}
diff --git a/ticker-serve/src/main.rs b/ticker-serve/src/main.rs
index c45ae85..c75596c 100644
--- a/ticker-serve/src/main.rs
+++ b/ticker-serve/src/main.rs
@@ -24,7 +24,7 @@ pub struct AppState {
 }
 
 fn main() {
-    let config = Config::read_yaml_file("../config.yaml");
+    let config = Config::read_yaml_file("config.yaml");
     let db = PgConnection::establish(&config.db_url)
         .expect("DB");
 
@@ -47,5 +47,5 @@ fn main() {
                 .build()
         );
     });
-    gotham::start("[::1]:8400", router)
+    gotham::start("0.0.0.0:8400", router)
 }
diff --git a/ticker-update/src/main.rs b/ticker-update/src/main.rs
index 585f05d..b4baecd 100644
--- a/ticker-update/src/main.rs
+++ b/ticker-update/src/main.rs
@@ -258,7 +258,7 @@ impl std::fmt::Display for Error {
 }
 
 fn main() {
-    let config = Config::read_yaml_file("../config.yaml");
+    let config = Config::read_yaml_file("config.yaml");
     let res = Resources::new(
         config.db_url,
         config.calendars.into_iter()