// The MIT License (MIT)

// Copyright (c) 2016 Bazinga Technologies Inc

namespace FSharp.Data.GraphQL.Client

open System

/// Represents the location of a string resource.

type StringLocation =

/// Specifies that the string resource is provided as a value.

| String of string

/// Specifies that the string resource is contained in a file.

| File of path : string

/// <summary>

/// Tries to create a string resource using providing information.

/// </summary>

/// <param name="value">

/// The value of the resource. It can be a string containing the file name or the file path, or the string itself.

/// The method tries to identify if a file exists with the value. If it does not exist, the string is provided as a value.

/// </param>

/// <param name="folderPath">An optional folder path. Provide it when the value parameter is a file without its path.</param>

static member Create(value : string, ?folderPath : string) =

try

let file =

match folderPath with

| Some folderPath -> System.IO.Path.Combine(folderPath, value)

| None -> value

if System.IO.File.Exists(file)

then File file

else String value

with _ -> String value

/// Represents the location of an introspection schema.

type IntrospectionLocation =

/// Specifies that the introspection schema resource is provided as a value.

| Uri of address : string

/// Specifies that the introspection schema resource is provided in a JSON file.

| IntrospectionFile of path : string

/// <summary>

/// Tries to create a introspection schema resource using providing information.

/// </summary>

/// <param name="value">

/// The value of the resource. It can be a string containing the file name or the file path, or the string itself.

/// The method tries to identify if a file exists with the value. If it does not exist, the introspection schema is provided as a value.

/// </param>

/// <param name="folderPath">An optional folder path. Provide it when the value parameter is a file without its path.</param>

static member Create(value : string, ?folderPath : string) =

let tryUri address =

match Uri.TryCreate(address, UriKind.Absolute) with

| (true, _) -> Uri value

| _ -> failwithf "Could not determine location of introspection. The introspection should be a valid GraphQL server URL, or a introspection JSON file on the path of the project or script."

try

let file =

match folderPath with

| Some folderPath -> System.IO.Path.Combine(folderPath, value)

| None -> value

if System.IO.File.Exists(file)

then IntrospectionFile file

else tryUri value

with _ -> tryUri value