Add ideas about persistence

README.md

@@ -36,3 +36,30 @@ rustomato break [start]      # Starts a break. Auto-finishes the currently activ
 * Install and update rust with `rustup`
 * Run: `cargo run -- pomodoro`
 * Build a release: `cargo build --release` (binary found in `target/release/`)
+
+# WIP Persistence
+
+```command
+$ sqlite3 ~/.rustomato.sqlite3
+```
+
+```sql
+CREATE TABLE schedulables (
+  uuid            TEXT NOT NULL,
+  started_at      INTEGER,
+  finished_at     INTEGER,
+  cancelled_at    INTEGER
+);
+
+-- TODO Can we set up a constraint to have either finished_at or cancelled_at as zero?
+
+INSERT INTO schedulables (uuid, started_at) VALUES ("3de9cc4b-f731-4c3d-9c93-1700c932f218", 1629318386);
+
+SELECT
+  *,
+  datetime(started_at, 'unixepoch', 'localtime') as started_at_datetime,
+  datetime(finished_at, 'unixepoch', 'localtime') as finished_at_datetime,
+  datetime(cancelled_at, 'unixepoch', 'localtime') as cancelled_at_datetime
+FROM
+  schedulables
+;