Add presets functionality to GenerateUI class

ui/gradio_ui.py

@@ -1,16 +1,19 @@
 import os
 import gradio as gr
+import orjson
 
 from src.engines import ENGINES, BaseEngine
 from src.chore import GenerationContext
 
-
 class GenerateUI:
     def __init__(self):
         self.css = """.generate_button {
                 font-size: 5rem !important
             }
         """
+    def get_presets(self):
+        with open("local/presets.json", "r") as f:
+            return orjson.loads(f.read())
 
     def get_switcher_func(self, engine_names: list[str]) -> list[gr.update]:
         def switch(selected: str | list[str]):
@@ -92,6 +95,54 @@ class GenerateUI:
                         variant="primary",
                         elem_classes="generate_button",
                     )
+                    with gr.Row() as preset_row:
+                        presets = self.get_presets()
+                        preset_dropdown = gr.Dropdown(
+                            choices=list(presets.keys()),
+                            label="Presets",
+                            allow_custom_value=True,
+                            value=None
+                        )
+                        preset_button = gr.Button("Load")
+                        def load_preset(preset_name, *inputs) -> list[gr.update]:
+                            with open("local/presets.json", "r") as f:
+                                presets = orjson.loads(f.read())
+                            returnable = []
+                            if preset_name in presets.keys():
+                            # If the preset exists
+                                preset = presets[preset_name]
+                                for engine_type, engines in ENGINES.items():
+                                    engines = engines["classes"]
+                                    values = [[]]
+                                    for engine in engines:
+                                        if engine.name in preset.get(engine_type, {}).keys():
+                                            values[0].append(engine.name)
+                                            values.extend(gr.update(value=value) for value in preset[engine_type][engine.name])
+                                        else:
+                                            values.extend(gr.update() for _ in range(engine.num_options))
+                                    returnable.extend(values)
+                            else:
+                                poppable_inputs = list(inputs)
+                                new_preset = {}
+                                for engine_type, engines in ENGINES.items():
+                                    engines = engines["classes"]
+                                    new_preset[engine_type] = {}
+                                    engine_names = poppable_inputs.pop(0)
+                                    if isinstance(engine_names, str):
+                                        engine_names = [engine_names]
+                                    returnable.append(gr.update())
+                                    for engine in engines:
+                                        if engine.name in engine_names:
+                                            new_preset[engine_type][engine.name] = poppable_inputs[:engine.num_options]
+                                            poppable_inputs = poppable_inputs[engine.num_options:]
+                                        else:
+                                            poppable_inputs = poppable_inputs[engine.num_options:]
+                                        returnable.extend(gr.update() for _ in range(engine.num_options))
+                                with open("local/presets.json", "wb") as f:
+                                    presets[preset_name] = new_preset
+                                    f.write(orjson.dumps(presets))
+                            return returnable
+                    preset_button.click(load_preset, inputs=[preset_dropdown, *inputs], outputs=inputs)
                     output_gallery = gr.Markdown("aaa", render=False)
                     button.click(
                         self.run_generate_interface,