-- BoosAPI Workflow Studio core tables.

CREATE TABLE IF NOT EXISTS workflows (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    public_id TEXT NOT NULL UNIQUE,
    user_id INTEGER,
    name TEXT NOT NULL,
    description TEXT,
    graph TEXT NOT NULL DEFAULT '{}',
    is_template INTEGER NOT NULL DEFAULT 0,
    visibility TEXT NOT NULL DEFAULT 'private',
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    updated_at TEXT NOT NULL DEFAULT (datetime('now')),
    deleted_at TEXT,
    FOREIGN KEY(user_id) REFERENCES users(id) ON DELETE SET NULL
);

CREATE INDEX IF NOT EXISTS idx_workflows_user_updated
    ON workflows(user_id, updated_at DESC);
CREATE INDEX IF NOT EXISTS idx_workflows_visibility
    ON workflows(visibility);
CREATE INDEX IF NOT EXISTS idx_workflows_deleted
    ON workflows(deleted_at);

CREATE TABLE IF NOT EXISTS workflow_runs (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    public_id TEXT NOT NULL UNIQUE,
    workflow_id INTEGER NOT NULL,
    user_id INTEGER,
    status TEXT NOT NULL,
    input_overrides TEXT NOT NULL DEFAULT '{}',
    final_outputs TEXT,
    error_message TEXT,
    started_at TEXT,
    completed_at TEXT,
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    FOREIGN KEY(workflow_id) REFERENCES workflows(id) ON DELETE CASCADE,
    FOREIGN KEY(user_id) REFERENCES users(id) ON DELETE SET NULL
);

CREATE INDEX IF NOT EXISTS idx_workflow_runs_workflow_created
    ON workflow_runs(workflow_id, created_at DESC);
CREATE INDEX IF NOT EXISTS idx_workflow_runs_user_created
    ON workflow_runs(user_id, created_at DESC);
CREATE INDEX IF NOT EXISTS idx_workflow_runs_status
    ON workflow_runs(status);

CREATE TABLE IF NOT EXISTS workflow_node_runs (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    run_id INTEGER NOT NULL,
    node_id TEXT NOT NULL,
    node_type TEXT NOT NULL,
    status TEXT NOT NULL,
    inputs TEXT NOT NULL DEFAULT '{}',
    outputs TEXT,
    error_message TEXT,
    started_at TEXT,
    completed_at TEXT,
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    FOREIGN KEY(run_id) REFERENCES workflow_runs(id) ON DELETE CASCADE
);

CREATE INDEX IF NOT EXISTS idx_workflow_node_runs_run
    ON workflow_node_runs(run_id, id);