inter-hub-haskell/Application/Migration/1743897600-ihf-phase10-hub-registry.sql

-- IHF Phase 10 — Hub Registry and Widget Marketplace
-- IHUB-WP-0011-T01: widget_patterns, widget_pattern_versions, pattern_adoptions,
--                   governance_templates, governance_template_clones
--
-- GAAF constraints:
--   widget_patterns.widget_type FKs to widget_type_registry(name)
--   governance_templates.categories is JSONB; validated at controller layer
--   No HubRegistry table — hub registry is a view over existing tables

-- widget_patterns: reusable widget definitions tied to registered types
CREATE TABLE widget_patterns (
    id UUID DEFAULT uuid_generate_v4() PRIMARY KEY NOT NULL,
    hub_id UUID NOT NULL REFERENCES hubs(id),
    name TEXT NOT NULL,
    description TEXT,
    widget_type TEXT NOT NULL REFERENCES widget_type_registry(name),
    is_cross_hub BOOLEAN NOT NULL DEFAULT FALSE,
    is_published BOOLEAN NOT NULL DEFAULT FALSE,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW() NOT NULL,
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW() NOT NULL
);

CREATE INDEX widget_patterns_hub_id_idx ON widget_patterns (hub_id);
CREATE INDEX widget_patterns_widget_type_idx ON widget_patterns (widget_type);
CREATE INDEX widget_patterns_is_published_idx ON widget_patterns (is_published);

-- widget_pattern_versions: explicit version history
CREATE TABLE widget_pattern_versions (
    id UUID DEFAULT uuid_generate_v4() PRIMARY KEY NOT NULL,
    widget_pattern_id UUID NOT NULL REFERENCES widget_patterns(id) ON DELETE CASCADE,
    version_number INTEGER NOT NULL,
    definition JSONB NOT NULL,
    changelog TEXT,
    published_at TIMESTAMP WITH TIME ZONE DEFAULT NOW() NOT NULL,
    UNIQUE (widget_pattern_id, version_number)
);

CREATE INDEX widget_pattern_versions_pattern_idx ON widget_pattern_versions (widget_pattern_id);

-- pattern_adoptions: which hubs have adopted which patterns
CREATE TABLE pattern_adoptions (
    id UUID DEFAULT uuid_generate_v4() PRIMARY KEY NOT NULL,
    widget_pattern_id UUID NOT NULL REFERENCES widget_patterns(id),
    adopting_hub_id UUID NOT NULL REFERENCES hubs(id),
    pinned_version_id UUID REFERENCES widget_pattern_versions(id),
    is_version_pinned BOOLEAN NOT NULL DEFAULT FALSE,
    is_anonymous BOOLEAN NOT NULL DEFAULT FALSE,
    adopted_at TIMESTAMP WITH TIME ZONE DEFAULT NOW() NOT NULL,
    UNIQUE (widget_pattern_id, adopting_hub_id)
);

CREATE INDEX pattern_adoptions_pattern_idx ON pattern_adoptions (widget_pattern_id);
CREATE INDEX pattern_adoptions_hub_idx ON pattern_adoptions (adopting_hub_id);

-- governance_templates: requirement distillation and decision templates
-- categories: JSONB array of annotation_category_registry names
-- validated at the controller layer (array FK not expressible in SQL)
CREATE TABLE governance_templates (
    id UUID DEFAULT uuid_generate_v4() PRIMARY KEY NOT NULL,
    hub_id UUID NOT NULL REFERENCES hubs(id),
    name TEXT NOT NULL,
    description TEXT,
    categories JSONB NOT NULL DEFAULT '[]',
    template_body JSONB NOT NULL,
    is_published BOOLEAN NOT NULL DEFAULT FALSE,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW() NOT NULL,
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW() NOT NULL
);

CREATE INDEX governance_templates_hub_id_idx ON governance_templates (hub_id);
CREATE INDEX governance_templates_is_published_idx ON governance_templates (is_published);

-- governance_template_clones: adoption record for governance templates
CREATE TABLE governance_template_clones (
    id UUID DEFAULT uuid_generate_v4() PRIMARY KEY NOT NULL,
    governance_template_id UUID NOT NULL REFERENCES governance_templates(id),
    cloning_hub_id UUID NOT NULL REFERENCES hubs(id),
    cloned_at TIMESTAMP WITH TIME ZONE DEFAULT NOW() NOT NULL,
    UNIQUE (governance_template_id, cloning_hub_id)
);

CREATE INDEX governance_template_clones_template_idx ON governance_template_clones (governance_template_id);
CREATE INDEX governance_template_clones_hub_idx ON governance_template_clones (cloning_hub_id);