Changeset 0.22.8 (#150)

server/database/migrations/013_files.sql

@@ -0,0 +1,65 @@
+-- ==========================================
+-- Chat Switchboard — 013 Files
+-- ==========================================
+-- Unified files table replacing attachments.
+-- Handles both upgrade (attachments exists) and fresh install.
+-- ==========================================
+
+CREATE TABLE IF NOT EXISTS files (
+    id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    channel_id      UUID REFERENCES channels(id) ON DELETE CASCADE,
+    message_id      UUID REFERENCES messages(id) ON DELETE SET NULL,
+    user_id         UUID REFERENCES users(id) ON DELETE SET NULL,
+    project_id      UUID REFERENCES projects(id) ON DELETE SET NULL,
+    origin          VARCHAR(20) NOT NULL DEFAULT 'user_upload'
+                    CHECK (origin IN ('user_upload', 'tool_output', 'system')),
+    filename        VARCHAR(255) NOT NULL,
+    content_type    VARCHAR(127) NOT NULL DEFAULT 'application/octet-stream',
+    size_bytes      BIGINT NOT NULL DEFAULT 0,
+    storage_key     TEXT NOT NULL,
+    display_hint    VARCHAR(20) NOT NULL DEFAULT 'download'
+                    CHECK (display_hint IN ('inline', 'download', 'thumbnail')),
+    extracted_text  TEXT,
+    metadata        JSONB DEFAULT '{}'::jsonb,
+    created_at      TIMESTAMPTZ DEFAULT NOW(),
+    updated_at      TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Ensure attachments table exists so the INSERT is always valid.
+-- Upgrade: no-op (table already has data). Fresh install: empty table.
+CREATE TABLE IF NOT EXISTS attachments (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    channel_id UUID, user_id UUID, message_id UUID, project_id UUID,
+    filename VARCHAR(255), content_type VARCHAR(127), size_bytes BIGINT,
+    storage_key TEXT, extracted_text TEXT, metadata JSONB, created_at TIMESTAMPTZ
+);
+
+INSERT INTO files (
+    id, channel_id, message_id, user_id, project_id,
+    origin, filename, content_type, size_bytes, storage_key,
+    display_hint, extracted_text, metadata, created_at, updated_at
+)
+SELECT
+    id, channel_id, message_id, user_id, project_id,
+    'user_upload',
+    filename, content_type, size_bytes, storage_key,
+    CASE
+        WHEN content_type LIKE 'image/%' THEN 'inline'
+        WHEN content_type LIKE 'video/%' THEN 'inline'
+        WHEN content_type LIKE 'audio/%' THEN 'inline'
+        WHEN content_type = 'application/pdf' THEN 'thumbnail'
+        WHEN content_type LIKE 'text/%' THEN 'inline'
+        ELSE 'download'
+    END,
+    extracted_text, metadata, created_at, created_at
+FROM attachments
+ON CONFLICT (id) DO NOTHING;
+
+DROP TABLE IF EXISTS attachments;
+
+CREATE INDEX IF NOT EXISTS idx_files_channel  ON files(channel_id);
+CREATE INDEX IF NOT EXISTS idx_files_message  ON files(message_id);
+CREATE INDEX IF NOT EXISTS idx_files_user     ON files(user_id);
+CREATE INDEX IF NOT EXISTS idx_files_project  ON files(project_id) WHERE project_id IS NOT NULL;
+CREATE INDEX IF NOT EXISTS idx_files_origin   ON files(origin);
+CREATE INDEX IF NOT EXISTS idx_files_orphan   ON files(created_at) WHERE message_id IS NULL AND origin = 'user_upload';