-- Database initialization script for Virtual Board Member AI System

-- Create extensions
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
CREATE EXTENSION IF NOT EXISTS "pg_trgm";

-- Create custom types
DO $$ BEGIN
    CREATE TYPE user_role AS ENUM (
        'board_member',
        'executive', 
        'executive_assistant',
        'analyst',
        'auditor',
        'admin'
    );
EXCEPTION
    WHEN duplicate_object THEN null;
END $$;

DO $$ BEGIN
    CREATE TYPE document_type AS ENUM (
        'report',
        'presentation',
        'minutes',
        'financial',
        'legal',
        'other'
    );
EXCEPTION
    WHEN duplicate_object THEN null;
END $$;

DO $$ BEGIN
    CREATE TYPE commitment_status AS ENUM (
        'pending',
        'in_progress',
        'completed',
        'overdue',
        'cancelled'
    );
EXCEPTION
    WHEN duplicate_object THEN null;
END $$;

-- Create indexes for better performance
CREATE INDEX IF NOT EXISTS idx_users_email ON users(email);
CREATE INDEX IF NOT EXISTS idx_users_username ON users(username);
CREATE INDEX IF NOT EXISTS idx_users_role ON users(role);
CREATE INDEX IF NOT EXISTS idx_documents_created_at ON documents(created_at);
CREATE INDEX IF NOT EXISTS idx_documents_type ON documents(document_type);
CREATE INDEX IF NOT EXISTS idx_commitments_deadline ON commitments(deadline);
CREATE INDEX IF NOT EXISTS idx_commitments_status ON commitments(status);
CREATE INDEX IF NOT EXISTS idx_audit_logs_timestamp ON audit_logs(timestamp);
CREATE INDEX IF NOT EXISTS idx_audit_logs_user_id ON audit_logs(user_id);

-- Create full-text search indexes
CREATE INDEX IF NOT EXISTS idx_documents_content_fts ON documents USING gin(to_tsvector('english', content));
CREATE INDEX IF NOT EXISTS idx_commitments_description_fts ON commitments USING gin(to_tsvector('english', description));

-- Create trigram indexes for fuzzy search
CREATE INDEX IF NOT EXISTS idx_documents_title_trgm ON documents USING gin(title gin_trgm_ops);
CREATE INDEX IF NOT EXISTS idx_commitments_description_trgm ON commitments USING gin(description gin_trgm_ops);

-- Grant permissions
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO vbm_user;
GRANT ALL PRIVILEGES ON ALL SEQUENCES IN SCHEMA public TO vbm_user;
GRANT ALL PRIVILEGES ON ALL FUNCTIONS IN SCHEMA public TO vbm_user;