Revert "Mail list: show who wrote, not everyone involved"

This reverts commit 550b8cf503.
2026-09-18 18:31:16 +02:00
parent 550b8cf503
commit 428e81efa5
7 changed files with 4 additions and 86 deletions
@@ -1,58 +0,0 @@
-"""threads.senders — who wrote, as distinct from who was involved
-
-The message list showed a thread's `participants`, which the threader builds from
-from + to + cc because the subject-fallback join matches on recipients. In a list
-that meant every ordinary email read "Sender, You" — and the "+N" badge counted
-the user themselves.
-
-`senders` holds only the from addresses, newest writer first. Backfilled here so
-existing threads do not have to wait to be touched again.
-
-Revision ID: 0019
-Revises: 0018
-Create Date: 2026-09-18
-"""
-
-from __future__ import annotations
-
-from collections.abc import Sequence
-
-from alembic import op
-
-revision: str = "0019"
-down_revision: str | None = "0018"
-branch_labels: str | Sequence[str] | None = None
-depends_on: str | Sequence[str] | None = None
-
-
-def upgrade() -> None:
-    op.execute("ALTER TABLE threads ADD COLUMN senders jsonb NOT NULL DEFAULT '[]'")
-    # Newest writer first, de-duplicated by lower-cased address, matching what
-    # denormalize_thread computes from now on.
-    op.execute(
-        """
-        WITH ranked AS (
-            SELECT m.thread_id,
-                   lower(a->>'email')                        AS email_key,
-                   jsonb_build_object('name', coalesce(a->>'name', ''),
-                                      'email', coalesce(a->>'email', '')) AS addr,
-                   row_number() OVER (PARTITION BY m.thread_id, lower(a->>'email')
-                                      ORDER BY m.internal_date DESC)       AS dup_rank,
-                   max(m.internal_date) OVER (PARTITION BY m.thread_id, lower(a->>'email'))
-                                                                           AS recency
-            FROM messages m
-            CROSS JOIN LATERAL jsonb_array_elements(m.from_addr) AS a
-            WHERE m.thread_id IS NOT NULL AND coalesce(a->>'email', '') <> ''
-        ),
-        collected AS (
-            SELECT thread_id, jsonb_agg(addr ORDER BY recency DESC) AS senders
-            FROM ranked WHERE dup_rank = 1 GROUP BY thread_id
-        )
-        UPDATE threads t SET senders = c.senders
-        FROM collected c WHERE c.thread_id = t.id
-        """
-    )
-
-
-def downgrade() -> None:
-    op.execute("ALTER TABLE threads DROP COLUMN IF EXISTS senders")