-- V1__init.sql - Consolidated schema for Cameleer3

-- Extensions
CREATE EXTENSION IF NOT EXISTS timescaledb;
CREATE EXTENSION IF NOT EXISTS timescaledb_toolkit;

-- =============================================================
-- RBAC
-- =============================================================

CREATE TABLE users (
    user_id      TEXT        PRIMARY KEY,
    provider     TEXT        NOT NULL,
    email        TEXT,
    display_name TEXT,
    password_hash TEXT,
    created_at   TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_at   TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE roles (
    id            UUID        PRIMARY KEY DEFAULT gen_random_uuid(),
    name          TEXT        NOT NULL UNIQUE,
    description   TEXT        NOT NULL DEFAULT '',
    scope         TEXT        NOT NULL DEFAULT 'custom',
    system        BOOLEAN     NOT NULL DEFAULT false,
    created_at    TIMESTAMPTZ NOT NULL DEFAULT now()
);

INSERT INTO roles (id, name, description, scope, system) VALUES
    ('00000000-0000-0000-0000-000000000001', 'AGENT',    'Agent registration and data ingestion',              'system-wide', true),
    ('00000000-0000-0000-0000-000000000002', 'VIEWER',   'Read-only access to dashboards and data',            'system-wide', true),
    ('00000000-0000-0000-0000-000000000003', 'OPERATOR', 'Operational commands (start/stop/configure agents)',  'system-wide', true),
    ('00000000-0000-0000-0000-000000000004', 'ADMIN',    'Full administrative access',                         'system-wide', true);

CREATE TABLE groups (
    id              UUID        PRIMARY KEY DEFAULT gen_random_uuid(),
    name            TEXT        NOT NULL UNIQUE,
    parent_group_id UUID        REFERENCES groups(id) ON DELETE SET NULL,
    created_at      TIMESTAMPTZ NOT NULL DEFAULT now()
);

-- Built-in Admins group
INSERT INTO groups (id, name) VALUES
    ('00000000-0000-0000-0000-000000000010', 'Admins');

CREATE TABLE group_roles (
    group_id UUID NOT NULL REFERENCES groups(id) ON DELETE CASCADE,
    role_id  UUID NOT NULL REFERENCES roles(id) ON DELETE CASCADE,
    PRIMARY KEY (group_id, role_id)
);

-- Assign ADMIN role to Admins group
INSERT INTO group_roles (group_id, role_id) VALUES
    ('00000000-0000-0000-0000-000000000010', '00000000-0000-0000-0000-000000000004');

CREATE TABLE user_groups (
    user_id  TEXT NOT NULL REFERENCES users(user_id) ON DELETE CASCADE,
    group_id UUID NOT NULL REFERENCES groups(id) ON DELETE CASCADE,
    PRIMARY KEY (user_id, group_id)
);

CREATE TABLE user_roles (
    user_id TEXT NOT NULL REFERENCES users(user_id) ON DELETE CASCADE,
    role_id UUID NOT NULL REFERENCES roles(id) ON DELETE CASCADE,
    PRIMARY KEY (user_id, role_id)
);

CREATE INDEX idx_user_roles_user_id ON user_roles(user_id);
CREATE INDEX idx_user_groups_user_id ON user_groups(user_id);
CREATE INDEX idx_group_roles_group_id ON group_roles(group_id);
CREATE INDEX idx_groups_parent ON groups(parent_group_id);

-- =============================================================
-- Execution data (TimescaleDB hypertables)
-- =============================================================

CREATE TABLE executions (
    execution_id    TEXT        NOT NULL,
    route_id        TEXT        NOT NULL,
    agent_id        TEXT        NOT NULL,
    application_name TEXT       NOT NULL,
    status          TEXT        NOT NULL,
    correlation_id  TEXT,
    exchange_id     TEXT,
    start_time      TIMESTAMPTZ NOT NULL,
    end_time        TIMESTAMPTZ,
    duration_ms     BIGINT,
    error_message   TEXT,
    error_stacktrace TEXT,
    diagram_content_hash TEXT,
    created_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
    PRIMARY KEY (execution_id, start_time)
);

SELECT create_hypertable('executions', 'start_time', chunk_time_interval => INTERVAL '1 day');

CREATE INDEX idx_executions_agent_time ON executions (agent_id, start_time DESC);
CREATE INDEX idx_executions_route_time ON executions (route_id, start_time DESC);
CREATE INDEX idx_executions_app_time ON executions (application_name, start_time DESC);
CREATE INDEX idx_executions_correlation ON executions (correlation_id);

CREATE TABLE processor_executions (
    id                  BIGSERIAL,
    execution_id        TEXT        NOT NULL,
    processor_id        TEXT        NOT NULL,
    processor_type      TEXT        NOT NULL,
    diagram_node_id     TEXT,
    application_name    TEXT        NOT NULL,
    route_id            TEXT        NOT NULL,
    depth               INT         NOT NULL,
    parent_processor_id TEXT,
    status              TEXT        NOT NULL,
    start_time          TIMESTAMPTZ NOT NULL,
    end_time            TIMESTAMPTZ,
    duration_ms         BIGINT,
    error_message       TEXT,
    error_stacktrace    TEXT,
    input_body          TEXT,
    output_body         TEXT,
    input_headers       JSONB,
    output_headers      JSONB,
    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
    UNIQUE (execution_id, processor_id, start_time)
);

SELECT create_hypertable('processor_executions', 'start_time', chunk_time_interval => INTERVAL '1 day');

CREATE INDEX idx_proc_exec_execution ON processor_executions (execution_id);
CREATE INDEX idx_proc_exec_type_time ON processor_executions (processor_type, start_time DESC);

-- =============================================================
-- Agent metrics
-- =============================================================

CREATE TABLE agent_metrics (
    agent_id           TEXT             NOT NULL,
    metric_name        TEXT             NOT NULL,
    metric_value       DOUBLE PRECISION NOT NULL,
    tags               JSONB,
    collected_at       TIMESTAMPTZ      NOT NULL,
    server_received_at TIMESTAMPTZ      NOT NULL DEFAULT now()
);

SELECT create_hypertable('agent_metrics', 'collected_at', chunk_time_interval => INTERVAL '1 day');

CREATE INDEX idx_metrics_agent_name ON agent_metrics (agent_id, metric_name, collected_at DESC);

-- Retention: drop agent_metrics chunks older than 90 days
SELECT add_retention_policy('agent_metrics', INTERVAL '90 days', if_not_exists => true);

-- Compression: compress agent_metrics chunks older than 7 days
ALTER TABLE agent_metrics SET (timescaledb.compress);
SELECT add_compression_policy('agent_metrics', INTERVAL '7 days', if_not_exists => true);

-- =============================================================
-- Route diagrams
-- =============================================================

CREATE TABLE route_diagrams (
    content_hash TEXT        PRIMARY KEY,
    route_id     TEXT        NOT NULL,
    agent_id     TEXT        NOT NULL,
    definition   TEXT        NOT NULL,
    created_at   TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX idx_diagrams_route_agent ON route_diagrams (route_id, agent_id);

-- =============================================================
-- Agent events
-- =============================================================

CREATE TABLE agent_events (
    id         BIGSERIAL    PRIMARY KEY,
    agent_id   TEXT         NOT NULL,
    app_id     TEXT         NOT NULL,
    event_type TEXT         NOT NULL,
    detail     TEXT,
    timestamp  TIMESTAMPTZ  NOT NULL DEFAULT NOW()
);

CREATE INDEX idx_agent_events_agent ON agent_events(agent_id, timestamp DESC);
CREATE INDEX idx_agent_events_app   ON agent_events(app_id, timestamp DESC);
CREATE INDEX idx_agent_events_time  ON agent_events(timestamp DESC);

-- =============================================================
-- Server configuration
-- =============================================================

CREATE TABLE server_config (
    config_key  TEXT        PRIMARY KEY,
    config_val  JSONB       NOT NULL,
    updated_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_by  TEXT
);

-- =============================================================
-- Admin
-- =============================================================

CREATE TABLE audit_log (
    id          BIGSERIAL PRIMARY KEY,
    timestamp   TIMESTAMPTZ NOT NULL DEFAULT now(),
    username    TEXT NOT NULL,
    action      TEXT NOT NULL,
    category    TEXT NOT NULL,
    target      TEXT,
    detail      JSONB,
    result      TEXT NOT NULL,
    ip_address  TEXT,
    user_agent  TEXT
);

CREATE INDEX idx_audit_log_timestamp ON audit_log (timestamp DESC);
CREATE INDEX idx_audit_log_username ON audit_log (username);
CREATE INDEX idx_audit_log_category ON audit_log (category);
CREATE INDEX idx_audit_log_action ON audit_log (action);
CREATE INDEX idx_audit_log_target ON audit_log (target);

-- =============================================================
-- Continuous aggregates
-- =============================================================

CREATE MATERIALIZED VIEW stats_1m_all
WITH (timescaledb.continuous, timescaledb.materialized_only = false) AS
SELECT
    time_bucket('1 minute', start_time) AS bucket,
    COUNT(*) AS total_count,
    COUNT(*) FILTER (WHERE status = 'FAILED') AS failed_count,
    COUNT(*) FILTER (WHERE status = 'RUNNING') AS running_count,
    SUM(duration_ms) AS duration_sum,
    MAX(duration_ms) AS duration_max,
    approx_percentile(0.99, percentile_agg(duration_ms::DOUBLE PRECISION)) AS p99_duration
FROM executions
WHERE status IS NOT NULL
GROUP BY bucket
WITH NO DATA;

SELECT add_continuous_aggregate_policy('stats_1m_all',
    start_offset => INTERVAL '1 hour',
    end_offset   => INTERVAL '1 minute',
    schedule_interval => INTERVAL '1 minute');

CREATE MATERIALIZED VIEW stats_1m_app
WITH (timescaledb.continuous, timescaledb.materialized_only = false) AS
SELECT
    time_bucket('1 minute', start_time) AS bucket,
    application_name,
    COUNT(*) AS total_count,
    COUNT(*) FILTER (WHERE status = 'FAILED') AS failed_count,
    COUNT(*) FILTER (WHERE status = 'RUNNING') AS running_count,
    SUM(duration_ms) AS duration_sum,
    MAX(duration_ms) AS duration_max,
    approx_percentile(0.99, percentile_agg(duration_ms::DOUBLE PRECISION)) AS p99_duration
FROM executions
WHERE status IS NOT NULL
GROUP BY bucket, application_name
WITH NO DATA;

SELECT add_continuous_aggregate_policy('stats_1m_app',
    start_offset => INTERVAL '1 hour',
    end_offset   => INTERVAL '1 minute',
    schedule_interval => INTERVAL '1 minute');

CREATE MATERIALIZED VIEW stats_1m_route
WITH (timescaledb.continuous, timescaledb.materialized_only = false) AS
SELECT
    time_bucket('1 minute', start_time) AS bucket,
    application_name,
    route_id,
    COUNT(*) AS total_count,
    COUNT(*) FILTER (WHERE status = 'FAILED') AS failed_count,
    COUNT(*) FILTER (WHERE status = 'RUNNING') AS running_count,
    SUM(duration_ms) AS duration_sum,
    MAX(duration_ms) AS duration_max,
    approx_percentile(0.99, percentile_agg(duration_ms::DOUBLE PRECISION)) AS p99_duration
FROM executions
WHERE status IS NOT NULL
GROUP BY bucket, application_name, route_id
WITH NO DATA;

SELECT add_continuous_aggregate_policy('stats_1m_route',
    start_offset => INTERVAL '1 hour',
    end_offset   => INTERVAL '1 minute',
    schedule_interval => INTERVAL '1 minute');

CREATE MATERIALIZED VIEW stats_1m_processor
WITH (timescaledb.continuous, timescaledb.materialized_only = false) AS
SELECT
    time_bucket('1 minute', start_time) AS bucket,
    application_name,
    route_id,
    processor_type,
    COUNT(*) AS total_count,
    COUNT(*) FILTER (WHERE status = 'FAILED') AS failed_count,
    SUM(duration_ms) AS duration_sum,
    MAX(duration_ms) AS duration_max,
    approx_percentile(0.99, percentile_agg(duration_ms::DOUBLE PRECISION)) AS p99_duration
FROM processor_executions
GROUP BY bucket, application_name, route_id, processor_type
WITH NO DATA;

SELECT add_continuous_aggregate_policy('stats_1m_processor',
    start_offset => INTERVAL '1 hour',
    end_offset   => INTERVAL '1 minute',
    schedule_interval => INTERVAL '1 minute');

CREATE MATERIALIZED VIEW stats_1m_processor_detail
WITH (timescaledb.continuous) AS
SELECT
    time_bucket('1 minute', start_time) AS bucket,
    application_name,
    route_id,
    processor_id,
    processor_type,
    COUNT(*) AS total_count,
    COUNT(*) FILTER (WHERE status = 'FAILED') AS failed_count,
    SUM(duration_ms) AS duration_sum,
    MAX(duration_ms) AS duration_max,
    approx_percentile(0.99, percentile_agg(duration_ms)) AS p99_duration
FROM processor_executions
GROUP BY bucket, application_name, route_id, processor_id, processor_type;

SELECT add_continuous_aggregate_policy('stats_1m_processor_detail',
    start_offset => INTERVAL '1 hour',
    end_offset   => INTERVAL '1 minute',
    schedule_interval => INTERVAL '1 minute');