Refactor code structure for improved readability and maintainability

src/bibapi/__init__.py

@@ -1,2 +1,71 @@
-def hello() -> str:
-    return "Hello from bibapi!"
+from .sru import Api as _Api
+from .sru import DNBSchema, HBZSchema, HebisSchema, KOBVSchema, OEVKSchema, SWBSchema
+
+__all__ = [
+    "SWB",
+    "DNB",
+    "KOBV",
+    "HEBIS",
+    "OEVK",
+    "HBZ",
+]
+
+
+class SWB(_Api):
+    def __init__(self):
+        self.site = SWBSchema.NAME.value
+        self.url = SWBSchema.URL.value
+        self.prefix = SWBSchema.ARGSCHEMA.value
+        super().__init__(self.site, self.url, self.prefix)
+
+
+class DNB(_Api):
+    def __init__(self):
+        self.site = DNBSchema.NAME.value
+        self.url = DNBSchema.URL.value
+        self.prefix = DNBSchema.ARGSCHEMA.value
+        super().__init__(self.site, self.url, self.prefix)
+
+
+class KOBV(_Api):
+    def __init__(self):
+        self.site = KOBVSchema.NAME.value
+        self.url = KOBVSchema.URL.value
+        self.prefix = KOBVSchema.ARGSCHEMA.value
+        super().__init__(self.site, self.url, self.prefix)
+
+
+class HEBIS(_Api):
+    def __init__(self):
+        self.site = HebisSchema.NAME.value
+        self.url = HebisSchema.URL.value
+        self.prefix = HebisSchema.ARGSCHEMA.value
+        self.replace = HebisSchema.REPLACE.value
+        super().__init__(self.site, self.url, self.prefix, self.replace)
+
+
+class OEVK(_Api):
+    def __init__(self):
+        self.site = OEVKSchema.NAME.value
+        self.url = OEVKSchema.URL.value
+        self.prefix = OEVKSchema.ARGSCHEMA.value
+        super().__init__(self.site, self.url, self.prefix)
+
+
+class HBZ(_Api):
+    """
+    Small wrapper of the SRU API used to retrieve data from the HBZ libraries
+
+    All fields are available [here](https://eu04.alma.exlibrisgroup.com/view/sru/49HBZ_NETWORK?version=1.2)
+
+    Schema
+    ------
+    HBZSchema: <HBZSchema>
+    query prefix: alma.
+    """
+
+    def __init__(self):
+        self.site = HBZSchema.NAME.value
+        self.url = HBZSchema.URL.value
+        self.prefix = HBZSchema.ARGSCHEMA.value
+        super().__init__(self.site, self.url, self.prefix)