Initial public release of Warp.

Repo-Sync-Origin: warpdotdev/warp-internal@12af1d983b

crates/persistence/migrations/2023-07-19-182041_generic_pane_leaves/up.sql

@@ -0,0 +1,38 @@
+-- Schema change approach from https://www.sqlite.org/lang_altertable.html#making_other_kinds_of_table_schema_changes
+
+PRAGMA foreign_keys = off;
+
+CREATE TABLE new_pane_leaves (
+    pane_node_id INTEGER NOT NULL UNIQUE REFERENCES pane_nodes(id),
+    -- This does not have a CHECK constraint because, when we add new kinds of panes in the future,
+    -- it's difficult to update the constraint.
+    kind TEXT NOT NULL,
+    is_focused BOOLEAN NOT NULL DEFAULT FALSE,
+
+    PRIMARY KEY (pane_node_id, kind)
+);
+
+CREATE TABLE terminal_panes (
+    id INTEGER PRIMARY KEY NOT NULL,
+    kind TEXT NOT NULL DEFAULT 'terminal' CHECK (kind = 'terminal'),
+
+    uuid BLOB NOT NULL UNIQUE,
+    cwd TEXT,
+    is_active BOOLEAN NOT NULL DEFAULT FALSE,
+
+    FOREIGN KEY (id, kind) REFERENCES new_pane_leaves(pane_node_id, kind)
+);
+
+INSERT INTO new_pane_leaves (pane_node_id, kind, is_focused)
+    SELECT pane_node_id, 'terminal' as kind, is_active as is_focused
+    FROM pane_leaves;
+
+INSERT INTO terminal_panes (id, uuid, cwd, is_active)
+    SELECT pane_node_id, uuid, cwd, is_active
+    FROM pane_leaves;
+
+DROP TABLE pane_leaves;
+ALTER TABLE new_pane_leaves RENAME TO pane_leaves;
+
+PRAGMA foreign_key_check;
+PRAGMA foreign_keys = on;