api: Add go files

I know this is a huge commit, but I can't be bothered to check
this in part by part.

api/owner_reset_password_test.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"testing"
+	"time"
+)
+
+func TestOwnerResetPasswordBasics(t *testing.T) {
+	failTestOnError(t, setupTestEnv())
+
+	ownerHex, _ := ownerNew("test@example.com", "Test", "hunter2")
+
+	resetHex, _ := randomHex(32)
+
+	statement := `
+		INSERT INTO
+		ownerResetHexes (resetHex, ownerHex, sendDate)
+		VALUES          ($1,       $2,    $3         );
+	`
+	_, err := db.Exec(statement, resetHex, ownerHex, time.Now().UTC())
+	if err != nil {
+		t.Errorf("unexpected error inserting resetHex: %v", err)
+		return
+	}
+
+	if err = ownerResetPassword(resetHex, "hunter3"); err != nil {
+		t.Errorf("unexpected error resetting password: %v", err)
+		return
+	}
+
+	if _, err := ownerLogin("test@example.com", "hunter2"); err == nil {
+		t.Errorf("expected error not found when given old password")
+		return
+	}
+
+	if _, err := ownerLogin("test@example.com", "hunter3"); err != nil {
+		t.Errorf("unexpected error when logging in: %v", err)
+		return
+	}
+}