Migrate auth/logon handler

src/JobsJobsJobs/Api/Api.fsproj

@@ -8,6 +8,8 @@
 
   <ItemGroup>
     <Compile Include="Data.fs" />
+    <Compile Include="Auth.fs" />
+    <Compile Include="Handlers.fs" />
     <Compile Include="App.fs" />
   </ItemGroup>
   
@@ -20,6 +22,7 @@
     <PackageReference Include="Microsoft.FSharpLu.Json" Version="0.11.7" />
     <PackageReference Include="Polly" Version="7.2.2" />
     <PackageReference Include="RethinkDb.Driver" Version="2.3.150" />
+    <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="6.11.1" />
   </ItemGroup>
 
 </Project>

src/JobsJobsJobs/Api/App.fs

@@ -1,26 +1,30 @@
 /// The main API application for Jobs, Jobs, Jobs
 module JobsJobsJobs.Api.App
 
-//open System
 open Microsoft.AspNetCore.Builder
 open Microsoft.AspNetCore.Hosting
 open Microsoft.Extensions.DependencyInjection
 open Microsoft.Extensions.Hosting
 open Giraffe
+open Giraffe.EndpointRouting
 
 /// All available routes for the application
-let webApp =
+let webApp = [
-  choose [
+  subRoute "/api" [
-    route "/ping" >=> text "pong"
+    subRoute "/citizen" [
-    route "/" >=> htmlFile "/pages/index.html"
+      GET [ routef "/log-on/%s" Handlers.Citizen.logOn ]
+      ]
     ]
+  ]
 
 /// Configure the ASP.NET Core pipeline to use Giraffe
 let configureApp (app : IApplicationBuilder) =
-  app.UseGiraffe webApp
+  app
+    .UseRouting()
+    .UseEndpoints(fun e -> e.MapGiraffeEndpoints webApp)
+  |> ignore
 
 open NodaTime
-open RethinkDb.Driver.Net
 open Microsoft.Extensions.Configuration
 open Microsoft.Extensions.Logging
 
@@ -31,7 +35,7 @@ let configureServices (svc : IServiceCollection) =
   svc.AddLogging ()                             |> ignore
   let svcs = svc.BuildServiceProvider()
   let cfg  = svcs.GetRequiredService<IConfiguration>().GetSection "Rethink"
-  let log  = svcs.GetRequiredService<ILoggerFactory>().CreateLogger "Data.Startup"
+  let log  = svcs.GetRequiredService<ILoggerFactory>().CreateLogger (nameof Data.Startup)
   let conn = Data.Startup.createConnection cfg log
   svc.AddSingleton conn |> ignore
   Data.Startup.establishEnvironment cfg log conn |> Data.awaitIgnore

src/JobsJobsJobs/Api/Auth.fs

@@ -0,0 +1,108 @@
+/// Authorization / authentication functions
+module JobsJobsJobs.Api.Auth
+
+open System.Text.Json.Serialization
+
+/// The variables we need from the account information we get from No Agenda Social
+[<NoComparison; NoEquality; AllowNullLiteral>]
+type MastodonAccount () =
+  /// The user name (what we store as naUser)
+  [<JsonPropertyName "username">]
+  member val Username = "" with get, set
+  /// The account name; will be the same as username for local (non-federated) accounts
+  [<JsonPropertyName "acct">]
+  member val AccountName = "" with get, set
+  /// The user's display name as it currently shows on No Agenda Social
+  [<JsonPropertyName "display_name">]
+  member val DisplayName = "" with get, set
+  /// The user's profile URL
+  [<JsonPropertyName "url">]
+  member val Url = "" with get, set
+
+
+open FSharp.Control.Tasks
+open Microsoft.Extensions.Configuration
+open Microsoft.Extensions.Logging
+open System
+open System.Net.Http
+open System.Net.Http.Headers
+open System.Net.Http.Json
+open System.Text.Json
+
+/// Verify the authorization code with Mastodon and get the user's profile
+let verifyWithMastodon (authCode : string) (cfg : IConfigurationSection) (log : ILogger) = task {
+
+  use http = new HttpClient()
+
+  // Use authorization code to get an access token from NAS
+  use! codeResult =
+    http.PostAsJsonAsync("https://noagendasocial.com/oauth/token",
+      {|  client_id     = cfg.["ClientId"]
+          client_secret = cfg.["Secret"]
+          redirect_uri  = sprintf "%s/citizen/authorized" cfg.["ReturnHost"]
+          grant_type    = "authorization_code"
+          code          = authCode
+          scope         = "read"
+        |})
+  match codeResult.IsSuccessStatusCode with
+  | true ->
+      let! responseBytes = codeResult.Content.ReadAsByteArrayAsync ()
+      use  tokenResponse = JsonSerializer.Deserialize<JsonDocument> (ReadOnlySpan<byte> responseBytes)
+      match tokenResponse with
+      | null ->
+          return Error "Could not parse authorization code result"
+      | _ ->
+          // Use access token to get profile from NAS
+          use req = new HttpRequestMessage (HttpMethod.Get, sprintf "%saccounts/verify_credentials" cfg.["ApiUrl"])
+          req.Headers.Authorization <- AuthenticationHeaderValue
+            ("Bearer", tokenResponse.RootElement.GetProperty("access_token").GetString ())
+          use! profileResult = http.SendAsync req
+          
+          match profileResult.IsSuccessStatusCode with
+          | true ->
+              let! profileBytes = profileResult.Content.ReadAsByteArrayAsync ()
+              match JsonSerializer.Deserialize<MastodonAccount>(ReadOnlySpan<byte> profileBytes) with
+              | null ->
+                  return Error "Could not parse profile result"
+              | x when x.Username <> x.AccountName ->
+                  return Error $"Profiles must be from noagendasocial.com; yours is {x.AccountName}"
+              | profile ->
+                  return Ok profile
+          | false ->
+              return Error $"Could not get profile ({profileResult.StatusCode:D}: {profileResult.ReasonPhrase})"
+  | false ->
+      let! err = codeResult.Content.ReadAsStringAsync ()
+      log.LogError $"Could not get token result from Mastodon:\n  {err}"
+      return Error $"Could not get token ({codeResult.StatusCode:D}: {codeResult.ReasonPhrase})"
+
+  }
+
+
+open JobsJobsJobs.Domain
+open JobsJobsJobs.Domain.Types
+open Microsoft.IdentityModel.Tokens
+open System.IdentityModel.Tokens.Jwt
+open System.Security.Claims
+open System.Text
+
+/// Create a JSON Web Token for this citizen to use for further requests to this API
+let createJwt (citizen : Citizen) (cfg : IConfigurationSection) =
+
+  let tokenHandler = JwtSecurityTokenHandler ()
+  let token =
+    tokenHandler.CreateToken (
+      SecurityTokenDescriptor (
+        Subject = ClaimsIdentity [|
+          Claim (ClaimTypes.NameIdentifier, CitizenId.toString citizen.id)
+          Claim (ClaimTypes.Name, Citizen.name citizen)
+          |],
+        Expires  = DateTime.UtcNow.AddHours 2.,
+        Issuer   = "https://noagendacareers.com",
+        Audience = "https://noagendacareers.com",
+        SigningCredentials = SigningCredentials (
+          SymmetricSecurityKey (Encoding.UTF8.GetBytes cfg.["ServerSecret"]),
+          SecurityAlgorithms.HmacSha256Signature)
+        )
+      )
+  tokenHandler.WriteToken token
+

src/JobsJobsJobs/Api/Data.fs

@@ -220,6 +220,17 @@ module Citizen =
     ()
     }
 
+  /// Update the display name and last seen on date for a citizen
+  let logOnUpdate (citizen : Citizen) conn = task {
+    let! _ =
+      withReconn(conn).ExecuteAsync(fun () ->
+          r.Table(Table.Citizen)
+            .Get(citizen.id)
+            .Update(r.HashMap(nameof citizen.displayName, citizen.displayName)
+                        .With(nameof citizen.lastSeenOn, citizen.lastSeenOn))
+            .RunWriteAsync conn)
+    ()
+  }
 
 /// Profile data access functions
 [<RequireQualifiedAccess>]

src/JobsJobsJobs/Api/Handlers.fs

@@ -0,0 +1,101 @@
+/// Route handlers for Giraffe endpoints
+module JobsJobsJobs.Api.Handlers
+
+open FSharp.Control.Tasks
+open Giraffe
+open JobsJobsJobs.Domain
+open JobsJobsJobs.Domain.SharedTypes
+open JobsJobsJobs.Domain.Types
+
+/// Helper functions
+[<AutoOpen>]
+module Helpers =
+
+  open NodaTime
+  open Microsoft.AspNetCore.Http
+  open Microsoft.Extensions.Configuration
+  open Microsoft.Extensions.Logging
+  open RethinkDb.Driver.Net
+
+  /// Get the NodaTime clock from the request context
+  let clock (ctx : HttpContext) = ctx.GetService<IClock> ()
+
+  /// Get the application configuration from the request context
+  let config (ctx : HttpContext) = ctx.GetService<IConfiguration> ()
+
+  /// Get the logger factory from the request context
+  let logger (ctx : HttpContext) = ctx.GetService<ILoggerFactory> ()
+
+  /// Get the RethinkDB connection from the request context
+  let conn (ctx : HttpContext) = ctx.GetService<IConnection> ()
+
+  /// Return None if the string is null, empty, or whitespace; otherwise, return Some and the trimmed string
+  let noneIfEmpty x =
+    match (defaultArg (Option.ofObj x) "").Trim () with | "" -> None | it -> Some it
+
+
+/// Handlers for error conditions
+module Error =
+
+  /// Handler that will return a status code 404 and the text "Not Found"
+  let notFound : HttpHandler =
+    fun next ctx ->
+      RequestErrors.NOT_FOUND $"The URL {string ctx.Request.Path} was not recognized as a valid URL" next ctx
+
+
+/// Handler to return the files required for the Vue client app
+module Vue =
+
+  /// Handler that returns index.html (the Vue client app)
+  let app : HttpHandler =
+    fun next ctx ->
+      match [ "GET"; "HEAD" ] |> List.contains ctx.Request.Method with
+      | true -> htmlFile "wwwroot/index.html" next ctx
+      | false -> Error.notFound next ctx
+
+
+/// Handler for /api/citizen routes
+module Citizen =
+
+  // GET: /api/citizen/log-on/[code]
+  let logOn authCode : HttpHandler =
+    fun next ctx -> task {
+      // Step 1 - Verify with Mastodon
+      let cfg = (config ctx).GetSection "Auth"
+      let log = (logger ctx).CreateLogger (nameof JobsJobsJobs.Api.Auth)
+      
+      match! Auth.verifyWithMastodon authCode cfg log with
+      | Ok account ->
+          // Step 2 - Find / establish Jobs, Jobs, Jobs account
+          let  now     = (clock ctx).GetCurrentInstant ()
+          let  dbConn  = conn ctx
+          let! citizen = task {
+            match! Data.Citizen.findByNaUser account.Username dbConn with
+            | None ->
+                let it : Citizen =
+                  { id          = CitizenId.create ()
+                    naUser      = account.Username
+                    displayName = noneIfEmpty account.DisplayName
+                    realName    = None
+                    profileUrl  = account.Url
+                    joinedOn    = now
+                    lastSeenOn  = now
+                    }
+                do! Data.Citizen.add it dbConn
+                return it
+            | Some citizen ->
+                let it = { citizen with displayName = noneIfEmpty account.DisplayName; lastSeenOn = now }
+                do! Data.Citizen.logOnUpdate it dbConn
+                return it
+          }
+          
+          // Step 3 - Generate JWT
+          return!
+            json
+              { jwt       = Auth.createJwt citizen cfg
+                citizenId = CitizenId.toString citizen.id
+                name      = Citizen.name citizen
+                } next ctx
+      | Error err ->
+          return! RequestErrors.BAD_REQUEST err next ctx
+      }

src/JobsJobsJobs/DataMigrate/Program.fs

@@ -33,17 +33,21 @@ let createHostBuilder argv =
             Startup.establishEnvironment cfg log conn |> awaitIgnore
         ))
     .Build()
-  
+
 [<EntryPoint>]
 let main argv =
   let host = createHostBuilder argv
   let r    = RethinkDb.Driver.RethinkDB.R
   
+  printfn "0) Connecting to databases..."
+
   use db = host.Services.GetRequiredService<JobsDbContext> ()
   let conn = host.Services.GetRequiredService<IConnection> ()
 
   task {
-    // Migrate continents
+    
+    printfn "1) Migrating continents..."
+    
     let mutable continentXref = Map.empty<string, Types.ContinentId>
     let! continents = db.Continents.AsNoTracking().ToListAsync ()
     let reContinents =
@@ -59,7 +63,8 @@ let main argv =
       |> List.ofSeq
     let! _ = r.Table(Table.Continent).Insert(reContinents).RunWriteAsync conn
 
-    // Migrate citizens
+    printfn "2) Migrating citizens..."
+
     let mutable citizenXref = Map.empty<string, Types.CitizenId>
     let! citizens = db.Citizens.AsNoTracking().ToListAsync ()
     let reCitizens =
@@ -79,7 +84,8 @@ let main argv =
           it)
     let! _ = r.Table(Table.Citizen).Insert(reCitizens).RunWriteAsync conn
 
-    // Migrate profile information (includes skills)
+    printfn "3) Migrating profiles and skills..."
+
     let! profiles = db.Profiles.AsNoTracking().ToListAsync ()
     let reProfiles =
       profiles
@@ -103,15 +109,16 @@ let main argv =
             region            = p.Region
             remoteWork        = p.RemoteWork
             fullTime          = p.FullTime
-            biography         = Types.Text (string p.Biography)
+            biography         = Types.Text p.Biography.Text
             lastUpdatedOn     = p.LastUpdatedOn
-            experience        = match p.Experience with null -> None | x -> (string >> Types.Text >> Some) x
+            experience        = match p.Experience with null -> None | x -> (Types.Text >> Some) x.Text
             skills            = reSkills
             }
           it)
     let! _ = r.Table(Table.Profile).Insert(reProfiles).RunWriteAsync conn
 
-    // Migrate success stories
+    printfn "4) Migrating success stories..."
+
     let! successes = db.Successes.AsNoTracking().ToListAsync ()
     let reSuccesses =
       successes
@@ -122,7 +129,7 @@ let main argv =
               recordedOn = s.RecordedOn
               fromHere   = s.FromHere
               source     = "profile"
-              story      = match s.Story with null -> None | x -> (string >> Types.Text >> Some) x
+              story      = match s.Story with null -> None | x -> (Types.Text >> Some) x.Text
             }
           it)
     let! _ = r.Table(Table.Success).Insert(reSuccesses).RunWriteAsync conn
@@ -130,4 +137,6 @@ let main argv =
     }
   |> awaitIgnore
 
-  0
+  printfn "Migration complete"
+
+  0

src/JobsJobsJobs/Domain/.gitignore

@@ -0,0 +1 @@
+*.js

src/JobsJobsJobs/Domain/Domain.fsproj

@@ -9,6 +9,7 @@
   <ItemGroup>
     <Compile Include="Types.fs" />
     <Compile Include="Modules.fs" />
+    <Compile Include="SharedTypes.fs" />
   </ItemGroup>
 
   <ItemGroup>

src/JobsJobsJobs/Domain/SharedTypes.fs

@@ -0,0 +1,14 @@
+/// Types intended to be shared between the API and the client application
+module JobsJobsJobs.Domain.SharedTypes
+
+// fsharplint:disable FieldNames
+
+/// A successful logon
+type LogOnSuccess = {
+  /// The JSON Web Token (JWT) to use for API access
+  jwt       : string
+  /// The ID of the logged-in citizen (as a string)
+  citizenId : string
+  /// The name of the logged-in citizen
+  name      : string
+  }

src/JobsJobsJobs/Server/Areas/Api/Controllers/SuccessController.cs

@@ -53,7 +53,7 @@ namespace JobsJobsJobs.Server.Areas.Api.Controllers
             if (form.Id == "new")
             {
                 var story = new Success(await SuccessId.Create(), CurrentCitizenId, _clock.GetCurrentInstant(),
-                    form.FromHere, "profile",
+                    form.FromHere, // "profile",
                     string.IsNullOrWhiteSpace(form.Story) ? null : new MarkdownString(form.Story));
                 await _db.AddAsync(story);
             }

src/JobsJobsJobs/Server/Data/JobsDbContext.cs

@@ -143,7 +143,7 @@ namespace JobsJobsJobs.Server.Data
                     .HasConversion(Converters.CitizenIdConverter);
                 m.Property(e => e.RecordedOn).HasColumnName("recorded_on").IsRequired();
                 m.Property(e => e.FromHere).HasColumnName("from_here").IsRequired();
-                m.Property(e => e.Source).HasColumnName("source").IsRequired().HasMaxLength(7);
+                // m.Property(e => e.Source).HasColumnName("source").IsRequired().HasMaxLength(7);
                 m.Property(e => e.Story).HasColumnName("story")
                     .HasConversion(Converters.OptionalMarkdownStringConverter);
             });

src/JobsJobsJobs/Shared/Domain/Success.cs

@@ -10,6 +10,6 @@ namespace JobsJobsJobs.Shared
         CitizenId CitizenId,
         Instant RecordedOn,
         bool FromHere,
-        string Source,
+        // string Source,
         MarkdownString? Story);
 }