wip: migrations

Author: lennart-k

crates/store_sqlite/migrations/20260219125011_new_sharing.down.sql

@@ -0,0 +1,3 @@
+DROP TABLE new_calendars;
+DROP TABLE new_principals;
+DROP TABLE calendar_views;

crates/store_sqlite/migrations/20260219125011_new_sharing.up.sql

@@ -0,0 +1,49 @@
+SELECT load_extension("uuid");
+SELECT uuid_blob();
+
+CREATE TABLE new_principals (
+    -- uuid is an internal identifier to allow the principal
+    -- to be renamed in the future
+    uuid BLOB PRIMARY KEY,
+    -- id is the principl identifier used by public interfaces
+    id TEXT UNIQUE NOT NULL,
+    displayname TEXT,
+    principal_type TEXT NOT NULL,
+    password_hash TEXT
+) STRICT;
+
+CREATE TABLE new_calendars (
+    -- UUID to be saved as 16-byte BLOB (much more efficient than text)
+    -- disadvantage: less ergonomic in sqlite shell
+    uuid BLOB PRIMARY KEY,  -- a globally unique UUID (not the resource path, reference for calendar objects)
+    owner BLOB NOT NULL,  -- only the owner can manage shares
+    synctoken INTEGER DEFAULT 0 NOT NULL,
+    subscription_url TEXT,
+    push_topic TEXT UNIQUE NOT NULL,
+    comp_event BOOLEAN NOT NULL,
+    comp_todo BOOLEAN NOT NULL,
+    comp_journal BOOLEAN NOT NULL,
+    timezone_id TEXT,
+    CONSTRAINT fk_calendar_owner FOREIGN KEY (owner)
+    REFERENCES new_principals (uuid) ON DELETE RESTRICT
+) STRICT;
+
+CREATE TABLE calendar_views (
+    ref TEXT NOT NULL,  -- the underlying calendar
+    principal BLOB NOT NULL,  -- the principal having access to this calendar view
+    name TEXT NOT NULL,   -- the path (what previously was the id)
+    access TEXT NOT NULL,  -- read, write
+
+    displayname TEXT,
+    description TEXT,
+    "order" INT DEFAULT 0 NOT NULL,
+    color TEXT,
+    deleted_at DATETIME,  -- a user can delete its calendar view without deleting it for everyone
+
+    PRIMARY KEY (principal, name),
+    CONSTRAINT uniq_cal_principal(ref, principal) UNIQUE,  -- a user should not have mutiple views on a calendar
+    CONSTRAINT fk_calendar_view_principal FOREIGN KEY (principal)
+    REFERENCES new_principals (uuid) ON DELETE CASCADE,
+    CONSTRAINT fk_calendar_view_calendar FOREIGN KEY (ref)
+    REFERENCES calendars (id) ON DELETE CASCADE
+) STRICT;