-- ADR-105 MCP audit and snapshot foundation
-- 2026-05-01
-- Notes:
--   AWOOOI incident ids are string values such as INC-20260429-xxxx, not UUIDs.
--   Keep incident_id as VARCHAR(64) so MCP audit can join existing incident records.

CREATE TABLE IF NOT EXISTS mcp_audit_log (
    id              BIGSERIAL PRIMARY KEY,
    session_id      VARCHAR(36) NOT NULL,
    flywheel_node   VARCHAR(20),
    mcp_server      VARCHAR(80) NOT NULL,
    tool_name       VARCHAR(120) NOT NULL,
    input_params    JSONB,
    output_result   JSONB,
    duration_ms     INTEGER,
    success         BOOLEAN,
    error_message   TEXT,
    incident_id     VARCHAR(64),
    agent_role      VARCHAR(40),
    created_at      TIMESTAMPTZ DEFAULT NOW()
);

ALTER TABLE mcp_audit_log
    ADD COLUMN IF NOT EXISTS agent_role VARCHAR(40);

CREATE INDEX IF NOT EXISTS idx_mcp_audit_session
    ON mcp_audit_log(session_id);
CREATE INDEX IF NOT EXISTS idx_mcp_audit_incident
    ON mcp_audit_log(incident_id);
CREATE INDEX IF NOT EXISTS idx_mcp_audit_node
    ON mcp_audit_log(flywheel_node, created_at DESC);
CREATE INDEX IF NOT EXISTS idx_mcp_audit_server_tool
    ON mcp_audit_log(mcp_server, tool_name, created_at DESC);
CREATE INDEX IF NOT EXISTS idx_mcp_audit_agent_role
    ON mcp_audit_log(agent_role, created_at DESC);

CREATE TABLE IF NOT EXISTS mcp_daily_stats (
    date            DATE NOT NULL,
    mcp_server      VARCHAR(80) NOT NULL,
    tool_name       VARCHAR(120) NOT NULL,
    call_count      INTEGER DEFAULT 0 NOT NULL,
    success_count   INTEGER DEFAULT 0 NOT NULL,
    avg_duration_ms FLOAT,
    PRIMARY KEY (date, mcp_server, tool_name)
);

CREATE TABLE IF NOT EXISTS k8s_state_snapshots (
    id              BIGSERIAL PRIMARY KEY,
    incident_id     VARCHAR(64),
    snapshot_type   VARCHAR(40) NOT NULL,
    namespace       VARCHAR(63),
    resource_type   VARCHAR(80),
    resource_name   VARCHAR(253),
    state_json      JSONB,
    captured_at     TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_k8s_snapshot_incident
    ON k8s_state_snapshots(incident_id);
CREATE INDEX IF NOT EXISTS idx_k8s_snapshot_resource
    ON k8s_state_snapshots(namespace, resource_type, resource_name);
CREATE INDEX IF NOT EXISTS idx_k8s_snapshot_captured
    ON k8s_state_snapshots(captured_at DESC);

CREATE TABLE IF NOT EXISTS prometheus_snapshots (
    id              BIGSERIAL PRIMARY KEY,
    incident_id     VARCHAR(64),
    query           TEXT NOT NULL,
    result_json     JSONB,
    snapshot_type   VARCHAR(40),
    captured_at     TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_prom_snapshot_incident
    ON prometheus_snapshots(incident_id);
CREATE INDEX IF NOT EXISTS idx_prom_snapshot_type
    ON prometheus_snapshots(snapshot_type, captured_at DESC);