-- Migration 010: Scheduled Workflow Definitions and Run History
-- Enables autonomous cron-based workflow firing without REST triggers.
-- Two tables: schedule definitions (managed by TOML + DB) and an append-only run log.

DEFINE TABLE scheduled_workflows SCHEMAFULL;

DEFINE FIELD id               ON TABLE scheduled_workflows TYPE record<scheduled_workflows>;
DEFINE FIELD template_name    ON TABLE scheduled_workflows TYPE string   ASSERT $value != NONE;
DEFINE FIELD cron_expression  ON TABLE scheduled_workflows TYPE string   ASSERT $value != NONE;
DEFINE FIELD initial_context  ON TABLE scheduled_workflows FLEXIBLE TYPE object DEFAULT {};
DEFINE FIELD enabled          ON TABLE scheduled_workflows TYPE bool     DEFAULT true;
DEFINE FIELD allow_concurrent ON TABLE scheduled_workflows TYPE bool     DEFAULT false;
DEFINE FIELD catch_up         ON TABLE scheduled_workflows TYPE bool     DEFAULT false;
DEFINE FIELD last_fired_at    ON TABLE scheduled_workflows TYPE option<datetime> DEFAULT NONE;
DEFINE FIELD next_fire_at     ON TABLE scheduled_workflows TYPE option<datetime> DEFAULT NONE;
DEFINE FIELD runs_count       ON TABLE scheduled_workflows TYPE int      DEFAULT 0;
DEFINE FIELD created_at       ON TABLE scheduled_workflows TYPE datetime DEFAULT time::now();
DEFINE FIELD updated_at       ON TABLE scheduled_workflows TYPE datetime DEFAULT time::now() VALUE time::now();

DEFINE INDEX idx_scheduled_workflows_template
    ON TABLE scheduled_workflows COLUMNS template_name;

DEFINE INDEX idx_scheduled_workflows_enabled
    ON TABLE scheduled_workflows COLUMNS enabled;

-- Append-only execution history for audit and debugging.
DEFINE TABLE schedule_runs SCHEMAFULL;

DEFINE FIELD id                   ON TABLE schedule_runs TYPE record<schedule_runs>;
DEFINE FIELD schedule_id          ON TABLE schedule_runs TYPE string   ASSERT $value != NONE;
DEFINE FIELD workflow_instance_id ON TABLE schedule_runs TYPE option<string> DEFAULT NONE;
DEFINE FIELD fired_at             ON TABLE schedule_runs TYPE datetime ASSERT $value != NONE;
DEFINE FIELD status               ON TABLE schedule_runs TYPE string
    ASSERT $value INSIDE ['Fired', 'Skipped', 'Failed'];
DEFINE FIELD notes                ON TABLE schedule_runs TYPE option<string> DEFAULT NONE;

DEFINE INDEX idx_schedule_runs_schedule_id
    ON TABLE schedule_runs COLUMNS schedule_id;

DEFINE INDEX idx_schedule_runs_fired_at
    ON TABLE schedule_runs COLUMNS fired_at;

DEFINE INDEX idx_schedule_runs_schedule_fired
    ON TABLE schedule_runs COLUMNS schedule_id, fired_at;