1 files changed, 87 insertions, 0 deletions
diff --git a/lib/model.ts b/lib/model.ts
new file mode 100644
index 0000000..7896d70
--- /dev/null
+++ b/lib/model.ts
@@ -0,0 +1,87 @@
+import { isObject } from '@emprespresso/pengueno';
+
+export interface Email {
+    from: string;
+    to: string;
+    subject: string;
+    text: string;
+}
+
+export interface EmailCredentials {
+    email: string;
+    username: string;
+    password: string;
+}
+
+export const isCreds = (u: unknown): u is EmailCredentials =>
+    !!(
+        isObject(u) &&
+        ['email', 'username', 'password'].every((key) => key in u && typeof u[key as keyof typeof u] === 'string')
+    );
+
+export interface EmailSendInstruction extends EmailCredentials {
+    send_host: string;
+    send_port: number;
+}
+
+export const isSend = (u: unknown): u is EmailSendInstruction =>
+    !!(
+        isCreds(u) &&
+        'send_host' in u &&
+        typeof u.send_host === 'string' &&
+        'send_port' in u &&
+        typeof u.send_port === 'number'
+    );
+
+export interface EmailRecvInstruction extends EmailCredentials {
+    read_host: string;
+    read_port: number;
+}
+
+export const isRecv = (u: unknown): u is EmailSendInstruction =>
+    !!(
+        isCreds(u) &&
+        'read_host' in u &&
+        typeof u.read_host === 'string' &&
+        'read_port' in u &&
+        typeof u.read_port === 'number'
+    );
+
+export interface EmailJob {
+    from: EmailSendInstruction;
+    to: EmailRecvInstruction;
+    readRetry: Retry;
+}
+
+export const isEmailJob = (u: unknown): u is EmailJob =>
+    !!(
+        isObject(u) &&
+        'from' in u &&
+        isSend(u.from) &&
+        'to' in u &&
+        isRecv(u.to) &&
+        'readRetry' in u &&
+        isRetry(u.readRetry)
+    );
+
+export interface Retry {
+    attempts: number;
+    interval: number;
+}
+
+export const isRetry = (u: unknown): u is Retry =>
+    !!(
+        isObject(u) && ['attempts', 'interval'].every((key) => key in u && typeof u[key as keyof typeof u] === 'number')
+    );
+
+export const redact = <T extends EmailCredentials>(instruction: T): T => ({
+    ...instruction,
+    password: 'REDACTED',
+    username: 'REDACTED',
+});
+
+export const redactJob = (job: EmailJob): EmailJob => ({
+    ...job,
+    from: redact(job.from),
+    to: redact(job.to),
+});