Add initial constructor stub

.gitignore

@@ -1,21 +1,4 @@
 *.beam
-*.iml
-*.o
-*.plt
-*.swo
-*.swp
-*~
-.erlang.cookie
-.eunit
-.idea
-.rebar
-.rebar3
-_*
-_build
-docs
-ebin
+*.ez
+/build
 erl_crash.dump
-gen
-log
-logs
-rebar3.crashdump

README.md

@@ -1,29 +1,25 @@
-# gleam_personnummer
+# personnummer
 
-A Gleam program
-
-
-## Quick start
+[![Package Version](https://img.shields.io/hexpm/v/personnummer)](https://hex.pm/packages/personnummer)
+[![Hex Docs](https://img.shields.io/badge/hex-docs-ffaff3)](https://hexdocs.pm/personnummer/)
 
 ```sh
-# Build the project
-rebar3 compile
-
-# Run the eunit tests
-rebar3 eunit
-
-# Run the Erlang REPL
-rebar3 shell
+gleam add personnummer
 ```
+```gleam
+import personnummer
 
+pub fn main() {
+  // TODO: An example of the project in use
+}
+```
 
-## Installation
+Further documentation can be found at <https://hexdocs.pm/personnummer>.
 
-If [available in Hex](https://www.rebar3.org/docs/dependencies#section-declaring-dependencies)
-this package can be installed by adding `gleam_personnummer` to your `rebar.config` dependencies:
+## Development
 
-```erlang
-{deps, [
-    gleam_personnummer
-]}.
+```sh
+gleam run   # Run the project
+gleam test  # Run the tests
+gleam shell # Run an Erlang shell
 ```

gleam.toml

@@ -1 +1,20 @@
-name = "gleam_personnummer"
+name = "personnummer"
+version = "1.0.0"
+
+# Fill out these fields if you intend to generate HTML documentation or publish
+# your project to the Hex package manager.
+#
+# description = ""
+# licences = ["Apache-2.0"]
+# repository = { type = "github", user = "username", repo = "project" }
+# links = [{ title = "Website", href = "https://gleam.run" }]
+#
+# For a full reference of all the available options, you can have a look at
+# https://gleam.run/writing-gleam/gleam-toml/.
+
+[dependencies]
+gleam_stdlib = ">= 0.34.0 and < 2.0.0"
+birl = ">= 1.6.1 and < 2.0.0"
+
+[dev-dependencies]
+gleeunit = ">= 1.0.0 and < 2.0.0"

manifest.toml

@@ -0,0 +1,14 @@
+# This file was generated by Gleam
+# You typically do not need to edit this file
+
+packages = [
+  { name = "birl", version = "1.6.1", build_tools = ["gleam"], requirements = ["gleam_stdlib", "ranger"], otp_app = "birl", source = "hex", outer_checksum = "976CFF85D34D50F7775896615A71745FBE0C325E50399787088F941B539A0497" },
+  { name = "gleam_stdlib", version = "0.37.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "5398BD6C2ABA17338F676F42F404B9B7BABE1C8DC7380031ACB05BBE1BCF3742" },
+  { name = "gleeunit", version = "1.1.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "72CDC3D3F719478F26C4E2C5FED3E657AC81EC14A47D2D2DEBB8693CA3220C3B" },
+  { name = "ranger", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "ranger", source = "hex", outer_checksum = "1566C272B1D141B3BBA38B25CB761EF56E312E79EC0E2DFD4D3C19FB0CC1F98C" },
+]
+
+[requirements]
+birl = { version = ">= 1.6.1 and < 2.0.0"}
+gleam_stdlib = { version = ">= 0.34.0 and < 2.0.0" }
+gleeunit = { version = ">= 1.0.0 and < 2.0.0" }

src/personnummer.gleam

@@ -0,0 +1,67 @@
+import birl
+import gleam/int
+import gleam/option
+import gleam/regex
+import gleam/result
+
+pub type PersonnummerError {
+  PersonnummerError(
+    /// The problem encountered that caused the compilation to fail
+    error: String,
+  )
+}
+
+pub type Personnummer {
+  Personnummer(
+    date: birl.Day,
+    serial: Int,
+    control: option.Option(Int),
+    separator: String,
+    coordination: Bool,
+  )
+}
+
+pub fn new(pnr_string) -> Result(Personnummer, PersonnummerError) {
+  let assert Ok(re) =
+    regex.from_string(
+      "^(\\d{2}){0,1}(\\d{2})(\\d{2})(\\d{2})([-+]{0,1})(\\d{3})(\\d{0,1})$",
+    )
+  case regex.scan(with: re, content: pnr_string) {
+    [] -> Error(PersonnummerError(error: "invalid format"))
+    [x, ..] -> new_from_matches(x)
+  }
+}
+
+fn new_from_matches(
+  matches: regex.Match,
+) -> Result(Personnummer, PersonnummerError) {
+  let assert [century, year, month, day, divider, serial, control] =
+    matches.submatches
+
+  let century =
+    case century {
+      option.Some(_) -> maybe_str_to_int(century, 19)
+      option.None -> 19
+    }
+    * 100
+
+  let year = century + maybe_str_to_int(year, 0)
+  let month = maybe_str_to_int(month, 0)
+  let day = maybe_str_to_int(day, 0)
+  let control = case control {
+    option.Some(_) -> option.Some(maybe_str_to_int(control, 0))
+    option.None -> option.None
+  }
+
+  Ok(Personnummer(
+    date: birl.Day(year, month, day),
+    serial: maybe_str_to_int(serial, 0),
+    control: control,
+    separator: option.unwrap(divider, "-"),
+    coordination: False,
+  ))
+}
+
+fn maybe_str_to_int(s: option.Option(String), default: Int) -> Int {
+  result.unwrap(int.base_parse(option.unwrap(s, ""), 10), default)
+}

test/personnummer_test.gleam

@@ -0,0 +1,12 @@
+import gleeunit
+
+// import gleeunit/should
+import personnummer
+
+pub fn main() {
+  gleeunit.main()
+}
+
+pub fn new_test() {
+  personnummer.new("900101-0017")
+}