-- rVote module schema
CREATE SCHEMA IF NOT EXISTS rvote;

-- Users (lightweight, DID-based)
CREATE TABLE IF NOT EXISTS rvote.users (
	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
	did TEXT UNIQUE NOT NULL,
	username TEXT,
	created_at TIMESTAMPTZ DEFAULT NOW()
);

-- Voting spaces
CREATE TABLE IF NOT EXISTS rvote.spaces (
	slug TEXT PRIMARY KEY,
	name TEXT NOT NULL,
	description TEXT,
	owner_did TEXT NOT NULL,
	visibility TEXT DEFAULT 'public_read' CHECK (visibility IN ('public','public_read','authenticated','members_only')),
	promotion_threshold INTEGER DEFAULT 100,
	voting_period_days INTEGER DEFAULT 7,
	credits_per_day INTEGER DEFAULT 10,
	max_credits INTEGER DEFAULT 500,
	starting_credits INTEGER DEFAULT 50,
	created_at TIMESTAMPTZ DEFAULT NOW(),
	updated_at TIMESTAMPTZ DEFAULT NOW()
);

-- Space membership
CREATE TABLE IF NOT EXISTS rvote.space_members (
	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
	user_id UUID NOT NULL REFERENCES rvote.users(id) ON DELETE CASCADE,
	space_slug TEXT NOT NULL REFERENCES rvote.spaces(slug) ON DELETE CASCADE,
	role TEXT DEFAULT 'MEMBER' CHECK (role IN ('ADMIN','MEMBER')),
	credits INTEGER DEFAULT 50,
	last_credit_at TIMESTAMPTZ DEFAULT NOW(),
	joined_at TIMESTAMPTZ DEFAULT NOW(),
	UNIQUE(user_id, space_slug)
);

-- Proposals
CREATE TABLE IF NOT EXISTS rvote.proposals (
	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
	space_slug TEXT NOT NULL REFERENCES rvote.spaces(slug) ON DELETE CASCADE,
	author_id UUID NOT NULL REFERENCES rvote.users(id),
	title TEXT NOT NULL,
	description TEXT,
	status TEXT DEFAULT 'RANKING' CHECK (status IN ('RANKING','VOTING','PASSED','FAILED','ARCHIVED')),
	score REAL DEFAULT 0,
	voting_ends_at TIMESTAMPTZ,
	final_yes INTEGER DEFAULT 0,
	final_no INTEGER DEFAULT 0,
	final_abstain INTEGER DEFAULT 0,
	created_at TIMESTAMPTZ DEFAULT NOW(),
	updated_at TIMESTAMPTZ DEFAULT NOW()
);

-- Conviction votes (ranking phase)
CREATE TABLE IF NOT EXISTS rvote.votes (
	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
	user_id UUID NOT NULL REFERENCES rvote.users(id) ON DELETE CASCADE,
	proposal_id UUID NOT NULL REFERENCES rvote.proposals(id) ON DELETE CASCADE,
	weight INTEGER NOT NULL DEFAULT 1,
	credit_cost INTEGER NOT NULL DEFAULT 1,
	created_at TIMESTAMPTZ DEFAULT NOW(),
	decays_at TIMESTAMPTZ,
	UNIQUE(user_id, proposal_id)
);

-- Final votes (binary phase)
CREATE TABLE IF NOT EXISTS rvote.final_votes (
	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
	user_id UUID NOT NULL REFERENCES rvote.users(id) ON DELETE CASCADE,
	proposal_id UUID NOT NULL REFERENCES rvote.proposals(id) ON DELETE CASCADE,
	vote TEXT NOT NULL CHECK (vote IN ('YES','NO','ABSTAIN')),
	created_at TIMESTAMPTZ DEFAULT NOW(),
	UNIQUE(user_id, proposal_id)
);

-- Indexes
CREATE INDEX IF NOT EXISTS idx_proposals_space ON rvote.proposals(space_slug, status);
CREATE INDEX IF NOT EXISTS idx_votes_proposal ON rvote.votes(proposal_id);
CREATE INDEX IF NOT EXISTS idx_members_space ON rvote.space_members(space_slug);