-- Platform context tables (regions, environments, preferences) and release control bundles.
-- Required for the global context/filter UI and release management read models.
-- Idempotent: uses IF NOT EXISTS and ON CONFLICT.

CREATE SCHEMA IF NOT EXISTS platform;
CREATE SCHEMA IF NOT EXISTS release;
CREATE SCHEMA IF NOT EXISTS release_app;

-- Helper function
CREATE OR REPLACE FUNCTION release.update_updated_at_column()
RETURNS TRIGGER AS $$
BEGIN
    NEW.updated_at = now();
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

-- Context regions
CREATE TABLE IF NOT EXISTS platform.context_regions (
    region_id text PRIMARY KEY,
    display_name text NOT NULL,
    sort_order integer NOT NULL,
    enabled boolean NOT NULL DEFAULT true
);
CREATE UNIQUE INDEX IF NOT EXISTS ux_platform_context_regions_sort
    ON platform.context_regions (sort_order, region_id);

-- Context environments
CREATE TABLE IF NOT EXISTS platform.context_environments (
    environment_id text PRIMARY KEY,
    region_id text NOT NULL REFERENCES platform.context_regions(region_id) ON DELETE RESTRICT,
    environment_type text NOT NULL,
    display_name text NOT NULL,
    sort_order integer NOT NULL,
    enabled boolean NOT NULL DEFAULT true
);
CREATE INDEX IF NOT EXISTS ix_platform_context_environments_region_sort
    ON platform.context_environments (region_id, sort_order, environment_id);
CREATE INDEX IF NOT EXISTS ix_platform_context_environments_sort
    ON platform.context_environments (sort_order, region_id, environment_id);

-- UI context preferences (per-user filter state)
CREATE TABLE IF NOT EXISTS platform.ui_context_preferences (
    tenant_id text NOT NULL,
    actor_id text NOT NULL,
    regions text[] NOT NULL DEFAULT ARRAY[]::text[],
    environments text[] NOT NULL DEFAULT ARRAY[]::text[],
    time_window text NOT NULL DEFAULT '24h',
    updated_at timestamptz NOT NULL DEFAULT now(),
    updated_by text NOT NULL DEFAULT 'system',
    PRIMARY KEY (tenant_id, actor_id)
);
CREATE INDEX IF NOT EXISTS ix_platform_ui_context_preferences_updated
    ON platform.ui_context_preferences (updated_at DESC, tenant_id, actor_id);

-- Release control bundles
CREATE TABLE IF NOT EXISTS release.control_bundles (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    tenant_id UUID NOT NULL,
    slug TEXT NOT NULL,
    name TEXT NOT NULL,
    description TEXT,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    created_by TEXT NOT NULL DEFAULT 'system',
    CONSTRAINT uq_control_bundles_tenant_slug UNIQUE (tenant_id, slug)
);
CREATE INDEX IF NOT EXISTS idx_control_bundles_tenant_name
    ON release.control_bundles (tenant_id, name, id);
CREATE INDEX IF NOT EXISTS idx_control_bundles_tenant_updated
    ON release.control_bundles (tenant_id, updated_at DESC, id);

-- Context regions/environments are intentionally left empty on fresh installs.
-- The setup and admin surfaces create truthful operator-owned state as needed.