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import streamlit as st
import os
from pycaps import Document
from utils import (go_to_step, reset_all, setup_api_keys, cleanup_api_keys,
handle_unexpected_exception, load_template_files, create_pipeline_builder)
from file_manager import get_random_file_name
from config import TEMPLATE_NAMES, TEMPLATES_INFO
from template_editor import template_editor
def render_step2():
st.header("Configure & Process")
if 'editing_mode' not in st.session_state: st.session_state.editing_mode = False
if 'edited_templates' not in st.session_state: st.session_state.edited_templates = {}
col1, col2 = st.columns([1, 1])
with col1:
render_configuration_column()
with col2:
render_preview_column()
def render_configuration_column():
st.subheader("Configuration")
if st.session_state.preview_generating:
return
if st.session_state.editing_mode:
handle_editing_mode()
else:
handle_preset_selection_mode()
def handle_preset_selection_mode():
display_names = [
f"{name} [EDITED]" if (name in st.session_state.edited_templates and st.session_state.edited_templates[name]["modified"]) else name
for name in TEMPLATE_NAMES
]
current_selection_name = st.session_state.get('selected_template', TEMPLATE_NAMES[0])
try:
current_index = TEMPLATE_NAMES.index(current_selection_name)
except ValueError:
current_index = 0
selected_display_name = st.selectbox(
"Choose a Style", display_names, index=current_index
)
# Extraer el nombre real de la template
template_name = selected_display_name.replace(" [EDITED]", "")
st.session_state.selected_template = template_name
selected_template_info = next((t for t in TEMPLATES_INFO if t["name"] == template_name), None)
if selected_template_info and selected_template_info["ai_features"]:
ai_features_str = ", ".join(selected_template_info["ai_features"])
if not st.session_state.get('api_key_input'):
st.warning(f"⚠️ This template uses AI features ({ai_features_str}). "
"Please provide an API key in the sidebar to enable them. "
"Otherwise, they will be ignored during processing.")
else:
st.info(f"✨ This template uses AI features: {ai_features_str}.")
st.write("")
if st.button("✍️ Customize template", use_container_width=True):
st.session_state.editing_mode = True
# Si la template no ha sido editada antes, la cargamos desde los archivos originales
if template_name not in st.session_state.edited_templates:
initial_data = load_template_files(template_name)
st.session_state.edited_templates[template_name] = {
"json": initial_data["json"],
"css": initial_data["css"],
"resources_zip": None,
"modified": False
}
st.rerun()
st.divider()
st.session_state.edit_requested = st.checkbox(
"I want to review and edit the processed subtitles before rendering",
value=st.session_state.get('edit_requested', False)
)
b_next_col, b_back_col = st.columns(2)
with b_next_col:
if st.button("Render Video ➡️", type="primary", use_container_width=True):
process_and_advance()
with b_back_col:
if st.button("⬅️ Start Over", use_container_width=True):
reset_all()
st.rerun()
def handle_editing_mode():
template_name = st.session_state.selected_template
st.info(f"You are customizing the **'{template_name}'** template.")
current_edit_data = st.session_state.edited_templates[template_name]
editor_result = template_editor(
json=current_edit_data["json"],
css=current_edit_data["css"],
key=f"editor_{template_name}"
)
if editor_result:
if editor_result.get("action") == "save":
old_json = st.session_state.edited_templates[template_name].get("json", None)
old_css = st.session_state.edited_templates[template_name].get("css", None)
new_json = editor_result["json_content"]
new_css = editor_result["css_content"]
# This is a little bit tricky, but this logic can be executed multiple times for the same preview (because of using st.rerun)
# So, if `was_content_modified` is not used, we are going to remove the preview when this is re-rendered but the code was not changed
# On the other hand, modified must be always "True", since if we use `was_content_modified` here, it will be "False" when this is re-rendered for the same saving
was_content_modified = old_json != new_json or old_css != new_css
st.session_state.edited_templates[template_name]["json"] = new_json
st.session_state.edited_templates[template_name]["css"] = new_css
st.session_state.edited_templates[template_name]["modified"] = True
if template_name in st.session_state.previews and was_content_modified:
del st.session_state.previews[template_name]
st.toast("✅ Template saved!")
st.success("✅ Template saved!")
elif editor_result.get("action") == "error":
st.error(editor_result.get("message", "An error occurred in the editor."))
st.session_state.edited_templates[template_name]["resources_zip"] = st.file_uploader(
"(Optional) Upload a `.zip` to add or overwrite resources", type=["zip"],
key=f"uploader_{template_name}"
)
edit_buttons_col1, edit_buttons_col2 = st.columns(2)
with edit_buttons_col1:
if st.button("Back to Templates", use_container_width=True):
st.session_state.editing_mode = False
st.rerun()
with edit_buttons_col2:
if st.button("Reset to Original", help="Discards all edits for this template.", use_container_width=True):
if template_name in st.session_state.edited_templates:
del st.session_state.edited_templates[template_name]
if template_name in st.session_state.previews:
del st.session_state.previews[template_name]
st.toast(f"Template '{template_name}' has been reset to its original state.")
st.success(f"Template '{template_name}' has been reset to its original state.")
st.session_state.editing_mode = False
st.rerun()
def process_and_advance():
with st.spinner("Applying configuration..."):
try:
builder = create_pipeline_builder()
builder.with_input_video(st.session_state.video_path)
setup_api_keys(st.session_state.api_key_type, st.session_state.api_key_input)
pipeline = builder.build()
pipeline.prepare()
document = Document.from_dict(st.session_state.transcribed_doc)
processed_document = pipeline.process_document(document)
pipeline.close()
st.session_state.processed_doc = processed_document.to_dict()
go_to_step(3)
st.rerun()
except Exception as e:
handle_unexpected_exception(e)
finally:
cleanup_api_keys()
def render_preview_column():
st.subheader("Live Preview")
st.markdown("Generate a short, low-quality video preview with the selected style. This takes a few seconds.")
st.warning("AI features (auto-emojis, ai tagger) are ignored in the preview.")
preview_container = st.container()
template_name = st.session_state.get('selected_template')
has_preview_for_template = template_name in st.session_state.previews
should_disable_button = has_preview_for_template or st.session_state.preview_generating
if has_preview_for_template:
preview_container.video(st.session_state.previews[template_name])
if st.button("Generate Preview ⚡", use_container_width=True, disabled=should_disable_button):
st.session_state.preview_generating = True
st.rerun()
if st.session_state.preview_generating:
try:
with st.spinner("Generating preview video... ⚡"):
builder = create_pipeline_builder()
builder.with_input_video(st.session_state.video_path)
pipeline = builder.build(preview_time=(0, 5))
document = Document.from_dict(st.session_state.transcribed_doc)
pipeline.prepare()
processed_document = pipeline.process_document(document)
pipeline.render(processed_document)
pipeline.close()
preview_output_path = pipeline._output_video_path
if preview_output_path and os.path.exists(preview_output_path):
st.session_state.previews[template_name] = preview_output_path
else:
raise RuntimeError("Could not generate preview.")
except Exception as e:
handle_unexpected_exception(e)
finally:
st.session_state.preview_generating = False
st.rerun()
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