| 1 | -- Chat: channels, direct messages, their members and their messages. |
| 2 | -- People and agents are members alike, keyed `user:<id>` or `agent:<id>`. |
| 3 | -- Workspaces are kept by id, so renaming one changes nothing here. |
| 4 | |
| 5 | -- A channel, or a direct message (kind `dm`, no name). A direct message's |
| 6 | -- `dm_key` is its members' keys, sorted and joined, so the same people |
| 7 | -- always find the same conversation. |
| 8 | CREATE TABLE channels ( |
| 9 | id TEXT PRIMARY KEY, |
| 10 | workspace_id TEXT NOT NULL, |
| 11 | kind TEXT NOT NULL CHECK (kind IN ('channel', 'dm')), |
| 12 | name TEXT, |
| 13 | topic TEXT, |
| 14 | private INTEGER NOT NULL DEFAULT 0, |
| 15 | dm_key TEXT, |
| 16 | created_by TEXT NOT NULL, |
| 17 | created_at TEXT NOT NULL, |
| 18 | archived_at TEXT, |
| 19 | last_message_at TEXT |
| 20 | ); |
| 21 | |
| 22 | CREATE UNIQUE INDEX channels_by_name ON channels (workspace_id, name) WHERE name IS NOT NULL; |
| 23 | CREATE UNIQUE INDEX channels_by_dm_key ON channels (workspace_id, dm_key) WHERE dm_key IS NOT NULL; |
| 24 | -- Browse channels: a workspace's public ones. |
| 25 | CREATE INDEX channels_by_workspace ON channels (workspace_id, kind, private); |
| 26 | |
| 27 | CREATE TABLE channel_members ( |
| 28 | channel_id TEXT NOT NULL, |
| 29 | principal TEXT NOT NULL, |
| 30 | role TEXT NOT NULL DEFAULT 'member' CHECK (role IN ('owner', 'member')), |
| 31 | starred INTEGER NOT NULL DEFAULT 0, |
| 32 | muted INTEGER NOT NULL DEFAULT 0, |
| 33 | -- The newest message they have read; everything after it is unread. |
| 34 | last_read_id TEXT, |
| 35 | joined_at TEXT NOT NULL, |
| 36 | PRIMARY KEY (channel_id, principal) |
| 37 | ); |
| 38 | |
| 39 | -- The sidebar: every channel one member is in. |
| 40 | CREATE INDEX channel_members_by_principal ON channel_members (principal, channel_id); |
| 41 | |
| 42 | -- Ids are time-sortable, so ordering by id is ordering by time. |
| 43 | CREATE TABLE messages ( |
| 44 | id TEXT PRIMARY KEY, |
| 45 | channel_id TEXT NOT NULL, |
| 46 | author TEXT NOT NULL, |
| 47 | kind TEXT NOT NULL DEFAULT 'text' CHECK (kind IN ('text', 'card')), |
| 48 | body TEXT NOT NULL DEFAULT '', |
| 49 | -- A MessageCard as JSON, for kind `card`. |
| 50 | card TEXT, |
| 51 | -- The handles it @mentions, lowercased, as ` a b ` so one is found with |
| 52 | -- LIKE '% a %' (src/mentions.ts). |
| 53 | mentions TEXT NOT NULL DEFAULT '', |
| 54 | thread_root TEXT, |
| 55 | reply_count INTEGER NOT NULL DEFAULT 0, |
| 56 | last_reply_at TEXT, |
| 57 | created_at TEXT NOT NULL, |
| 58 | edited_at TEXT, |
| 59 | deleted_at TEXT |
| 60 | ); |
| 61 | |
| 62 | CREATE INDEX messages_by_channel ON messages (channel_id, id); |
| 63 | CREATE INDEX messages_by_thread ON messages (thread_root, id) WHERE thread_root IS NOT NULL; |
| 64 | |
| 65 | -- Reactions, for later. |
| 66 | CREATE TABLE reactions ( |
| 67 | message_id TEXT NOT NULL, |
| 68 | principal TEXT NOT NULL, |
| 69 | emoji TEXT NOT NULL, |
| 70 | created_at TEXT NOT NULL, |
| 71 | PRIMARY KEY (message_id, principal, emoji) |
| 72 | ); |
| 73 | |
| 74 | -- Who has been put in a workspace's #general once, so someone who leaves |
| 75 | -- it is not put back (src/index.ts, `sidebar`). |
| 76 | CREATE TABLE general_joined ( |
| 77 | workspace_id TEXT NOT NULL, |
| 78 | principal TEXT NOT NULL, |
| 79 | joined_at TEXT NOT NULL, |
| 80 | PRIMARY KEY (workspace_id, principal) |
| 81 | ); |
| 82 | |
| 83 | -- People chatting is included on every plan, but metered raw, so the |
| 84 | -- daily reconciliation sees what chat really costs: messages written and |
| 85 | -- their bytes, per workspace per UTC day. |
| 86 | CREATE TABLE chat_meter ( |
| 87 | workspace_id TEXT NOT NULL, |
| 88 | day TEXT NOT NULL, |
| 89 | messages INTEGER NOT NULL DEFAULT 0, |
| 90 | bytes INTEGER NOT NULL DEFAULT 0, |
| 91 | PRIMARY KEY (workspace_id, day) |
| 92 | ); |