sqlite_store: Reorder migrations

crates/store_sqlite/migrations/2_calendar.sql

@@ -0,0 +1,58 @@
+CREATE TABLE calendars (
+    principal TEXT NOT NULL,
+    id TEXT NOT NULL,
+    synctoken INTEGER DEFAULT 0 NOT NULL,
+    displayname TEXT,
+    description TEXT,
+    "order" INT DEFAULT 0 NOT NULL,
+    color TEXT,
+    timezone TEXT,
+    timezone_id TEXT,
+    deleted_at DATETIME,
+    subscription_url TEXT,
+    push_topic TEXT UNIQUE NOT NULL,
+    comp_event BOOLEAN NOT NULL,
+    comp_todo BOOLEAN NOT NULL,
+    comp_journal BOOLEAN NOT NULL,
+    PRIMARY KEY (principal, id),
+    CONSTRAINT fk_calendar_principal FOREIGN KEY (principal)
+    REFERENCES principals (id) ON DELETE RESTRICT
+);
+
+CREATE TABLE calendarobjects (
+    principal TEXT NOT NULL,
+    cal_id TEXT NOT NULL,
+    id TEXT NOT NULL,
+    ics TEXT NOT NULL,
+    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    deleted_at DATETIME,
+
+    -- For more efficient calendar-queries
+    first_occurence DATE,
+    last_occurence DATE,
+    etag TEXT,
+    object_type INTEGER NOT NULL,  -- VEVENT(0)/VTODO(1)/VJOURNAL(2)
+
+    PRIMARY KEY (principal, cal_id, id),
+    FOREIGN KEY (principal, cal_id)
+    REFERENCES calendars (principal, id) ON DELETE CASCADE
+);
+
+CREATE INDEX idx_calobjs_first_occurence ON calendarobjects (first_occurence);
+CREATE INDEX idx_calobjs_last_occurence ON calendarobjects (last_occurence);
+CREATE INDEX idx_calobjs_etag ON calendarobjects (etag);
+CREATE INDEX idx_calobjs_obj_type ON calendarobjects (object_type);
+
+CREATE TABLE calendarobjectchangelog (
+    principal TEXT NOT NULL,
+    cal_id TEXT NOT NULL,
+    object_id TEXT NOT NULL,
+    "operation" INTEGER NOT NULL,
+    synctoken INTEGER DEFAULT 0 NOT NULL,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY (principal, cal_id, synctoken, created_at),
+    FOREIGN KEY (principal, cal_id)
+    REFERENCES calendars (principal, id) ON DELETE CASCADE
+);
+
+CREATE INDEX idx_calobj_log_cal ON calendarobjectchangelog (cal_id);