Files
myPrayerJournal/src/api/MyPrayerJournal.Api/Data.fs
2018-08-21 20:44:39 -05:00

284 lines
9.9 KiB
Forth

namespace MyPrayerJournal
open FSharp.Control.Tasks.ContextInsensitive
open Microsoft.EntityFrameworkCore
/// Helpers for this file
[<AutoOpen>]
module private Helpers =
/// Convert any item to an option (Option.ofObj does not work for non-nullable types)
let toOption<'T> (x : 'T) = match box x with null -> None | _ -> Some x
/// Entities for use in the data model for myPrayerJournal
[<AutoOpen>]
module Entities =
open FSharp.EFCore.OptionConverter
open System.Collections.Generic
/// Type alias for a Collision-resistant Unique IDentifier
type Cuid = string
/// Request ID is a CUID
type RequestId = Cuid
/// User ID is a string (the "sub" part of the JWT)
type UserId = string
/// History is a record of action taken on a prayer request, including updates to its text
type [<CLIMutable; NoComparison; NoEquality>] History =
{ /// The ID of the request to which this history entry applies
requestId : RequestId
/// The time when this history entry was made
asOf : int64
/// The status for this history entry
status : string
/// The text of the update, if applicable
text : string option
}
with
/// An empty history entry
static member empty =
{ requestId = ""
asOf = 0L
status = ""
text = None
}
static member configureEF (mb : ModelBuilder) =
mb.Entity<History> (
fun m ->
m.ToTable "history" |> ignore
m.HasKey ("requestId", "asOf") |> ignore
m.Property(fun e -> e.requestId).IsRequired () |> ignore
m.Property(fun e -> e.asOf).IsRequired () |> ignore
m.Property(fun e -> e.status).IsRequired() |> ignore
m.Property(fun e -> e.text) |> ignore)
|> ignore
let typ = mb.Model.FindEntityType(typeof<History>)
let prop = typ.FindProperty("text")
mb.Model.FindEntityType(typeof<History>).FindProperty("text").SetValueConverter (OptionConverter<string> ())
/// Note is a note regarding a prayer request that does not result in an update to its text
and [<CLIMutable; NoComparison; NoEquality>] Note =
{ /// The ID of the request to which this note applies
requestId : RequestId
/// The time when this note was made
asOf : int64
/// The text of the notes
notes : string
}
with
/// An empty note
static member empty =
{ requestId = ""
asOf = 0L
notes = ""
}
static member configureEF (mb : ModelBuilder) =
mb.Entity<Note> (
fun m ->
m.ToTable "note" |> ignore
m.HasKey ("requestId", "asOf") |> ignore
m.Property(fun e -> e.requestId).IsRequired () |> ignore
m.Property(fun e -> e.asOf).IsRequired () |> ignore
m.Property(fun e -> e.notes).IsRequired () |> ignore)
|> ignore
/// Request is the identifying record for a prayer request
and [<CLIMutable; NoComparison; NoEquality>] Request =
{ /// The ID of the request
requestId : RequestId
/// The time this request was initially entered
enteredOn : int64
/// The ID of the user to whom this request belongs ("sub" from the JWT)
userId : string
/// The time at which this request should reappear in the user's journal by manual user choice
snoozedUntil : int64
/// The time at which this request should reappear in the user's journal by recurrence
showAfter : int64
/// The type of recurrence for this request
recurType : string
/// How many of the recurrence intervals should occur between appearances in the journal
recurCount : int16
/// The history entries for this request
history : ICollection<History>
/// The notes for this request
notes : ICollection<Note>
}
with
/// An empty request
static member empty =
{ requestId = ""
enteredOn = 0L
userId = ""
snoozedUntil = 0L
showAfter = 0L
recurType = "immediate"
recurCount = 0s
history = List<History> ()
notes = List<Note> ()
}
static member configureEF (mb : ModelBuilder) =
mb.Entity<Request> (
fun m ->
m.ToTable "request" |> ignore
m.HasKey(fun e -> e.requestId :> obj) |> ignore
m.Property(fun e -> e.requestId).IsRequired () |> ignore
m.Property(fun e -> e.enteredOn).IsRequired () |> ignore
m.Property(fun e -> e.userId).IsRequired () |> ignore
m.Property(fun e -> e.snoozedUntil).IsRequired () |> ignore
m.Property(fun e -> e.showAfter).IsRequired () |> ignore
m.Property(fun e -> e.recurType).IsRequired() |> ignore
m.Property(fun e -> e.recurCount).IsRequired() |> ignore
m.HasMany(fun e -> e.history :> IEnumerable<History>)
.WithOne()
.HasForeignKey(fun e -> e.requestId :> obj)
|> ignore
m.HasMany(fun e -> e.notes :> IEnumerable<Note>)
.WithOne()
.HasForeignKey(fun e -> e.requestId :> obj)
|> ignore)
|> ignore
/// JournalRequest is the form of a prayer request returned for the request journal display. It also contains
/// properties that may be filled for history and notes
[<CLIMutable; NoComparison; NoEquality>]
type JournalRequest =
{ /// The ID of the request
requestId : RequestId
/// The ID of the user to whom the request belongs
userId : string
/// The current text of the request
text : string
/// The last time action was taken on the request
asOf : int64
/// The last status for the request
lastStatus : string
/// The time that this request should reappear in the user's journal
snoozedUntil : int64
/// The time after which this request should reappear in the user's journal by configured recurrence
showAfter : int64
/// The type of recurrence for this request
recurType : string
/// How many of the recurrence intervals should occur between appearances in the journal
recurCount : int16
/// History entries for the request
history : History list
/// Note entries for the request
notes : Note list
}
with
static member configureEF (mb : ModelBuilder) =
mb.Query<JournalRequest> (
fun m ->
m.ToView "journal" |> ignore
m.Ignore(fun e -> e.history :> obj) |> ignore
m.Ignore(fun e -> e.notes :> obj) |> ignore)
|> ignore
open System.Linq
open System.Threading.Tasks
/// Data context
type AppDbContext (opts : DbContextOptions<AppDbContext>) =
inherit DbContext (opts)
[<DefaultValue>]
val mutable private history : DbSet<History>
[<DefaultValue>]
val mutable private notes : DbSet<Note>
[<DefaultValue>]
val mutable private requests : DbSet<Request>
[<DefaultValue>]
val mutable private journal : DbQuery<JournalRequest>
member this.History
with get () = this.history
and set v = this.history <- v
member this.Notes
with get () = this.notes
and set v = this.notes <- v
member this.Requests
with get () = this.requests
and set v = this.requests <- v
member this.Journal
with get () = this.journal
and set v = this.journal <- v
override __.OnModelCreating (mb : ModelBuilder) =
base.OnModelCreating mb
[ History.configureEF
Note.configureEF
Request.configureEF
JournalRequest.configureEF
]
|> List.iter (fun x -> x mb)
/// Register a disconnected entity with the context, having the given state
member private this.RegisterAs<'TEntity when 'TEntity : not struct> state e =
this.Entry<'TEntity>(e).State <- state
/// Add an entity instance to the context
member this.AddEntry e =
this.RegisterAs EntityState.Added e
/// Update the entity instance's values
member this.UpdateEntry e =
this.RegisterAs EntityState.Modified e
/// Retrieve all answered requests for the given user
member this.AnsweredRequests userId : JournalRequest seq =
upcast this.Journal
.Where(fun r -> r.userId = userId && r.lastStatus = "Answered")
.OrderByDescending(fun r -> r.asOf)
/// Retrieve the user's current journal
member this.JournalByUserId userId : JournalRequest seq =
upcast this.Journal
.Where(fun r -> r.userId = userId && r.lastStatus <> "Answered")
.OrderBy(fun r -> r.showAfter)
/// Retrieve a request by its ID and user ID
member this.TryRequestById reqId userId =
task {
let! req = this.Requests.AsNoTracking().FirstOrDefaultAsync(fun r -> r.requestId = reqId && r.userId = userId)
return toOption req
}
/// Retrieve notes for a request by its ID and user ID
member this.NotesById reqId userId =
task {
match! this.TryRequestById reqId userId with
| Some _ -> return this.Notes.AsNoTracking().Where(fun n -> n.requestId = reqId) |> List.ofSeq
| None -> return []
}
/// Retrieve a journal request by its ID and user ID
member this.TryJournalById reqId userId =
task {
let! req = this.Journal.FirstOrDefaultAsync(fun r -> r.requestId = reqId && r.userId = userId)
return toOption req
}
/// Retrieve a request, including its history and notes, by its ID and user ID
member this.TryFullRequestById requestId userId =
task {
match! this.TryJournalById requestId userId with
| Some req ->
let! fullReq =
this.Requests.AsNoTracking()
.Include(fun r -> r.history)
.Include(fun r -> r.notes)
.FirstOrDefaultAsync(fun r -> r.requestId = requestId && r.userId = userId)
match toOption fullReq with
| Some _ -> return Some { req with history = List.ofSeq fullReq.history; notes = List.ofSeq fullReq.notes }
| None -> return None
| None -> return None
}