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130 lines
5.5 KiB
Python
130 lines
5.5 KiB
Python
"""
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Page 3: Community Contributions
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Read, write, search and delete user contributions stored in SQLite.
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"""
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import streamlit as st
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from core.database import write_contribution, search_contributions, delete_contribution
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def render():
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"""Render the Contributions page."""
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st.markdown("# Community Contributions")
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st.markdown(
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"Share your observations about Shannon's theorem, satellite communications, "
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"or suggest improvements. Contributions are stored locally and shared with all users."
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)
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tab_read, tab_write = st.tabs(["Read Contributions", "Write Contribution"])
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# ── Read Contributions ──
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with tab_read:
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st.markdown("### Search Contributions")
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db_choice = st.radio(
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"Database",
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["Theory", "Real World"],
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horizontal=True,
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key="db_read",
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)
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db_name = "Shannon_Theory.db" if db_choice == "Theory" else "Shannon_Real.db"
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col_f1, col_f2 = st.columns(2)
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with col_f1:
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name_filter = st.text_input("Filter by Name", key="filter_name")
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title_filter = st.text_input("Filter by Title", key="filter_title")
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with col_f2:
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kw_filter = st.text_input("Filter by Keywords", key="filter_kw")
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content_filter = st.text_input("Filter by Content", key="filter_content")
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if st.button("Search", type="primary", key="btn_search"):
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results = search_contributions(
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db_name,
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name_filter=name_filter,
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title_filter=title_filter,
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keywords_filter=kw_filter,
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content_filter=content_filter,
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)
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st.session_state["contrib_results"] = results
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results = st.session_state.get("contrib_results", [])
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if results:
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st.success(f"Found {len(results)} contribution(s).")
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for i, contrib in enumerate(results):
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with st.expander(
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f"#{contrib['num']} — {contrib['title']} by {contrib['name']} ({contrib['date']})",
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expanded=(i == 0),
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):
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st.markdown(contrib["text"])
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if contrib["keywords"]:
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st.caption(f"Keywords: {contrib['keywords']}")
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# Delete functionality
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with st.popover("Delete"):
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st.warning("This action cannot be undone.")
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del_password = st.text_input(
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"Enter contribution password",
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type="password",
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key=f"del_pw_{contrib['num']}",
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)
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if st.button("Confirm Delete", key=f"del_btn_{contrib['num']}"):
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if delete_contribution(db_name, contrib["num"], del_password):
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st.success(f"Contribution #{contrib['num']} deleted.")
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# Refresh results
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st.session_state["contrib_results"] = search_contributions(
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db_name,
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name_filter=name_filter,
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title_filter=title_filter,
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keywords_filter=kw_filter,
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content_filter=content_filter,
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)
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st.rerun()
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else:
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st.error("Incorrect password or contribution not found.")
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elif "contrib_results" in st.session_state:
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st.info("No contributions found matching your filters.")
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# ── Write Contribution ──
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with tab_write:
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st.markdown("### New Contribution")
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db_choice_w = st.radio(
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"Database",
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["Theory", "Real World"],
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horizontal=True,
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key="db_write",
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)
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db_name_w = "Shannon_Theory.db" if db_choice_w == "Theory" else "Shannon_Real.db"
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with st.form("contribution_form", clear_on_submit=True):
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name = st.text_input("Your Name / Initials *", max_chars=100)
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title = st.text_input("Title *", max_chars=200)
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keywords = st.text_input("Keywords (comma-separated)", max_chars=200)
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text = st.text_area("Your contribution *", height=200)
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password = st.text_input(
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"Password (optional — leave empty to allow anyone to delete)",
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type="password",
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)
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submitted = st.form_submit_button("Submit", type="primary")
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if submitted:
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if not name or not title or not text:
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st.error("Please fill in all required fields (marked with *).")
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else:
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new_id = write_contribution(db_name_w, name, title, keywords, text, password)
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st.success(f"Thank you. Your contribution has been stored with ID #{new_id}.")
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with st.expander("Help"):
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st.markdown(
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"Write your contribution as a free text. Contributions should be:\n\n"
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"- Candid observations about the technical subject\n"
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"- References to relevant material (ideally as web links)\n"
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"- Open discussion items about adjacent subjects\n"
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"- Suggestions for improvement\n\n"
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"You can retrieve and delete your contribution from the Read tab using your password."
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)
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