Add simple authenticator

... including some required authenticator infrastructure

PFERD/pferd.py

@@ -3,6 +3,8 @@ from typing import Dict
 from rich import print
 from rich.markup import escape
 
+from .authenticator import Authenticator
+from .authenticators import AUTHENTICATORS
 from .conductor import TerminalConductor
 from .config import Config
 from .crawler import Crawler
@@ -17,8 +19,32 @@ class Pferd:
     def __init__(self, config: Config):
         self._config = config
         self._conductor = TerminalConductor()
+        self._authenticators: Dict[str, Authenticator] = {}
         self._crawlers: Dict[str, Crawler] = {}
 
+    def _load_authenticators(self) -> None:
+        abort = False
+        for name, section in self._config.authenticator_sections():
+            print(f"[bold bright_cyan]Loading[/] auth:{escape(name)}")
+            authenticator_type = section.get("type")
+            authenticator_constructor = AUTHENTICATORS.get(authenticator_type)
+            if authenticator_constructor is None:
+                abort = True
+                t = escape(repr(authenticator_type))
+                print(f"[red]Error: Unknown authenticator type {t}")
+                continue
+
+            authenticator = authenticator_constructor(
+                name,
+                section,
+                self._config,
+                self._conductor,
+            )
+            self._authenticators[name] = authenticator
+
+        if abort:
+            raise PferdLoadException()
+
     def _load_crawlers(self) -> None:
         abort = False
         for name, section in self._config.crawler_sections():
@@ -44,6 +70,7 @@ class Pferd:
 
     async def run(self) -> None:
         try:
+            self._load_authenticators()
             self._load_crawlers()
         except PferdLoadException:
             print("[bold red]Could not initialize PFERD properly")