artcraft/_sql/artcraft_migrations/20250708000000_create_tasks_table.sql

-- noinspection SqlDialectInspectionForFile
-- Migration history:
--   tasks_v1.sqlite - initial version
--   tasks_v2.sqlite - added model_type (nullable)

CREATE TABLE tasks (
    -- Task auto-incrementing primary key.
    -- We don't use this.
    id TEXT NOT NULL PRIMARY KEY,

    -- TaskStatus enum
    -- This is how the job system manages job states.
    -- pending, started, complete_success, dead, etc.
    task_status TEXT NOT NULL,

    -- TaskType enum
    -- image_generation, video_generation, etc.
    task_type TEXT NOT NULL,

    -- TaskModelType enum
    -- flux_1_dev, veo_2, etc.
    model_type TEXT,

    -- GenerationProvider enum
    -- Together with `provider_job_id`, this creates a foreign key lookup to the job.
    -- 'artcraft', 'fal', 'sora', etc.
    provider TEXT,

    -- The primary key for the job in the provider's system.
    provider_job_id TEXT,

    -- OPTIONAL.
    -- An arbitrary payload the frontend can set.
    frontend_subscriber_id TEXT,

    -- OPTIONAL.
    -- A JSON payload for the frontend subscriber.
    frontend_subscriber_payload TEXT,

    created_at INTEGER NOT NULL DEFAULT (unixepoch('now')),
    updated_at INTEGER NOT NULL DEFAULT (unixepoch('now')),
    completed_at INTEGER DEFAULT NULL
);

-- Unique Indices
CREATE UNIQUE INDEX idx_tasks_on_provider_job_id ON tasks(provider_job_id);

-- Indices
CREATE INDEX idx_tasks_on_status ON tasks(task_status);
CREATE INDEX idx_tasks_on_provider ON tasks(provider);