Initial

.gitignore

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+.DS_Store
+/.build
+/Packages
+/*.xcodeproj

Package.resolved

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+{
+  "object": {
+    "pins": [
+      {
+        "package": "Async",
+        "repositoryURL": "https://github.com/vapor/async.git",
+        "state": {
+          "branch": null,
+          "revision": "76ed7841b32dcc47168e8d9040ba03c024224d0c",
+          "version": "1.0.0-rc.1.1"
+        }
+      },
+      {
+        "package": "Console",
+        "repositoryURL": "https://github.com/vapor/console.git",
+        "state": {
+          "branch": null,
+          "revision": "26812edd1d4af8129d194ee25483159b92fed4d5",
+          "version": "3.0.0-rc.1"
+        }
+      },
+      {
+        "package": "Core",
+        "repositoryURL": "https://github.com/vapor/core.git",
+        "state": {
+          "branch": null,
+          "revision": "0dd54c6e369f575a13f2c9964609b6c7d2dab909",
+          "version": "3.0.0-rc.1.0.1"
+        }
+      },
+      {
+        "package": "Crypto",
+        "repositoryURL": "https://github.com/vapor/crypto.git",
+        "state": {
+          "branch": null,
+          "revision": "e5dbff5eac700fe925f95a4e6eee5424f609d0d6",
+          "version": "3.0.0-rc.1.1.1"
+        }
+      },
+      {
+        "package": "DatabaseKit",
+        "repositoryURL": "https://github.com/vapor/database-kit.git",
+        "state": {
+          "branch": null,
+          "revision": "5f247a63f392d260cc7c8e9b916131a67f73dbe4",
+          "version": "1.0.0-rc.1"
+        }
+      },
+      {
+        "package": "Engine",
+        "repositoryURL": "https://github.com/vapor/engine.git",
+        "state": {
+          "branch": null,
+          "revision": "e12531d2b37895d21cd8b8d13ad930fa85217e9e",
+          "version": "3.0.0-rc.1.0.1"
+        }
+      },
+      {
+        "package": "Routing",
+        "repositoryURL": "https://github.com/vapor/routing.git",
+        "state": {
+          "branch": null,
+          "revision": "8210d28691a11d0d27b7a0b32117d7fd81099916",
+          "version": "3.0.0-rc.1"
+        }
+      },
+      {
+        "package": "Service",
+        "repositoryURL": "https://github.com/vapor/service.git",
+        "state": {
+          "branch": null,
+          "revision": "90426d62cf1b028c0eef8285cb0293b527e45393",
+          "version": "1.0.0-rc.1"
+        }
+      },
+      {
+        "package": "Sockets",
+        "repositoryURL": "https://github.com/vapor/sockets.git",
+        "state": {
+          "branch": null,
+          "revision": "738f3ebf3ebb8ea886d5dd8588dd46a54f66af1c",
+          "version": "3.0.0-rc.1"
+        }
+      },
+      {
+        "package": "TemplateKit",
+        "repositoryURL": "https://github.com/vapor/template-kit.git",
+        "state": {
+          "branch": null,
+          "revision": "cda3174c5e029526a5b11b19fcfd83bd65b6876a",
+          "version": "1.0.0-rc.1.1"
+        }
+      },
+      {
+        "package": "TLS",
+        "repositoryURL": "https://github.com/vapor/tls.git",
+        "state": {
+          "branch": null,
+          "revision": "cfd8cc0f06841ee15469c5fc98131e47511f8e94",
+          "version": "3.0.0-rc.1.0.1"
+        }
+      },
+      {
+        "package": "Validation",
+        "repositoryURL": "https://github.com/vapor/validation.git",
+        "state": {
+          "branch": null,
+          "revision": "683af11976a732584baf339483aa3206734c913b",
+          "version": "2.0.0-rc.1"
+        }
+      },
+      {
+        "package": "Vapor",
+        "repositoryURL": "https://github.com/vapor/vapor.git",
+        "state": {
+          "branch": null,
+          "revision": "d8254ba464b211ca6d465703f7f5d37eb0c95b65",
+          "version": "3.0.0-rc.1.1"
+        }
+      }
+    ]
+  },
+  "version": 1
+}

Package.swift

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+// swift-tools-version:4.0
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "Mailgun",
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "Mailgun",
+            targets: ["Mailgun"]),
+    ],
+    dependencies: [
+        .package(url: "https://github.com/vapor/vapor.git", from: "3.0.0-beta"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
+        .target(
+            name: "Mailgun",
+            dependencies: [
+                "Vapor"
+            ]),
+        .testTarget(
+            name: "MailgunTests",
+            dependencies: ["Mailgun"]),
+    ]
+)

README.md

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+# Mailgun
+
+A description of this package.

Sources/Mailgun/Mailgun.swift

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+import Vapor
+import Crypto
+
+public struct MailgunFormData: Content {
+    public static let defaultMediaType: MediaType = MediaType.urlEncodedForm
+
+    let from: String
+    let to: String
+    let subject: String
+    let text: String
+}
+
+public protocol Mailgun: class, Service {
+    var apiKey: String { get }
+    var customURL: String { get }
+    func sendMail(data content: MailgunFormData, on req: Request) throws -> Future<Response>
+}
+
+public class MailgunEngine: Mailgun {
+    public var apiKey: String
+    public var customURL: String
+
+    init(apiKey: String, customURL: String) {
+        self.apiKey = apiKey
+        self.customURL = customURL
+    }
+
+    public func sendMail(data content: MailgunFormData, on req: Request) throws -> Future<Response> {
+        let client = try req.make(EngineClient.self)
+        let encode: (String) -> String = Base64Encoder(encoding: .base64).encode
+        let authKey = encode("api:key-\(self.apiKey)")
+
+        let headers = HTTPHeaders(dictionaryLiteral:
+            (HTTPHeaderName.authorization, "Basic \(authKey)"),
+                                  (HTTPHeaderName.contentType, "application/x-www-form-urlencoded")
+        )
+
+        let mailgunURL = "https://api.mailgun.net/v3/\(self.customURL)/messages"
+
+
+        return client
+            .post(mailgunURL, headers: headers, content: content)
+            .map(to: Response.self) { (response) in
+                return response
+            }.catch { (err) in
+                print(err)
+        }
+    }
+}

Tests/LinuxMain.swift

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+import XCTest
+
+import MailgunTests
+
+var tests = [XCTestCaseEntry]()
+tests += MailgunTests.allTests()
+XCTMain(tests)

Tests/MailgunTests/MailgunTests.swift

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+import XCTest
+@testable import Mailgun
+
+final class MailgunTests: XCTestCase {
+    func testExample() {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct
+        // results.
+        XCTAssertEqual(Mailgun().text, "Hello, World!")
+    }
+
+
+    static var allTests = [
+        ("testExample", testExample),
+    ]
+}

Tests/MailgunTests/XCTestManifests.swift

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+import XCTest
+
+#if !os(macOS)
+public func allTests() -> [XCTestCaseEntry] {
+    return [
+        testCase(MailgunTests.allTests),
+    ]
+}
+#endif