-- Migration: Add Menu Module Access System
-- Description: Enhance master_modules and create menu_modules & user_level_module_accesses tables
-- Date: 2026-01-15

-- ============================================================================
-- Step 1: Enhance master_modules with action_type
-- ============================================================================
ALTER TABLE master_modules 
ADD COLUMN IF NOT EXISTS action_type VARCHAR NULL;

COMMENT ON COLUMN master_modules.action_type IS 'Tipe aksi: view, create, edit, delete, approve, export, etc';

-- ============================================================================
-- Step 2: Create menu_modules table
-- ============================================================================
CREATE TABLE IF NOT EXISTS menu_modules (
    id SERIAL PRIMARY KEY,
    menu_id INT NOT NULL,
    module_id INT NOT NULL,
    position INT NULL,
    client_id UUID NULL,
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    FOREIGN KEY (menu_id) REFERENCES master_menus(id) ON DELETE CASCADE,
    FOREIGN KEY (module_id) REFERENCES master_modules(id) ON DELETE CASCADE
);

-- Add unique constraint with client_id consideration
CREATE UNIQUE INDEX idx_menu_modules_unique 
ON menu_modules(menu_id, module_id, COALESCE(client_id, '00000000-0000-0000-0000-000000000000'::UUID));

-- Add other indexes for performance
CREATE INDEX idx_menu_modules_menu_id ON menu_modules(menu_id);
CREATE INDEX idx_menu_modules_module_id ON menu_modules(module_id);
CREATE INDEX idx_menu_modules_client_id ON menu_modules(client_id) WHERE client_id IS NOT NULL;
CREATE INDEX idx_menu_modules_is_active ON menu_modules(is_active);

-- Add comments
COMMENT ON TABLE menu_modules IS 'Relasi many-to-many antara menu dan modul. Satu menu bisa punya banyak modul.';
COMMENT ON COLUMN menu_modules.position IS 'Urutan modul dalam menu untuk sorting';
COMMENT ON COLUMN menu_modules.menu_id IS 'Foreign key ke master_menus';
COMMENT ON COLUMN menu_modules.module_id IS 'Foreign key ke master_modules';

-- ============================================================================
-- Step 3: Create user_level_module_accesses table
-- ============================================================================
CREATE TABLE IF NOT EXISTS user_level_module_accesses (
    id SERIAL PRIMARY KEY,
    user_level_id INT NOT NULL,
    module_id INT NOT NULL,
    can_access BOOLEAN DEFAULT TRUE,
    client_id UUID NULL,
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    FOREIGN KEY (user_level_id) REFERENCES user_levels(id) ON DELETE CASCADE,
    FOREIGN KEY (module_id) REFERENCES master_modules(id) ON DELETE CASCADE
);

-- Add unique constraint with client_id consideration
CREATE UNIQUE INDEX idx_user_level_module_accesses_unique 
ON user_level_module_accesses(user_level_id, module_id, COALESCE(client_id, '00000000-0000-0000-0000-000000000000'::UUID));

-- Add other indexes for performance
CREATE INDEX idx_user_level_module_accesses_user_level_id ON user_level_module_accesses(user_level_id);
CREATE INDEX idx_user_level_module_accesses_module_id ON user_level_module_accesses(module_id);
CREATE INDEX idx_user_level_module_accesses_client_id ON user_level_module_accesses(client_id) WHERE client_id IS NOT NULL;
CREATE INDEX idx_user_level_module_accesses_is_active ON user_level_module_accesses(is_active);
CREATE INDEX idx_user_level_module_accesses_can_access ON user_level_module_accesses(can_access);

-- Add comments
COMMENT ON TABLE user_level_module_accesses IS 'Mengatur akses user_level ke modul-modul tertentu. Kontrol akses granular per modul.';
COMMENT ON COLUMN user_level_module_accesses.can_access IS 'Apakah user level ini boleh akses modul ini. True=boleh, False=tidak boleh';
COMMENT ON COLUMN user_level_module_accesses.user_level_id IS 'Foreign key ke user_levels';
COMMENT ON COLUMN user_level_module_accesses.module_id IS 'Foreign key ke master_modules';

-- ============================================================================
-- Step 4: Migrate existing data (optional - only if you have existing data)
-- ============================================================================
-- Copy existing menu.module_id relationship to menu_modules
-- This creates initial menu-module relationships from existing master_menus
INSERT INTO menu_modules (menu_id, module_id, position, client_id, is_active, created_at, updated_at)
SELECT 
    id as menu_id,
    module_id,
    position as position,  -- Use existing position if available
    client_id,
    is_active,
    created_at,
    updated_at
FROM master_menus
WHERE module_id IS NOT NULL
ON CONFLICT DO NOTHING;

-- ============================================================================
-- Step 5: Insert sample modules for testing (optional)
-- ============================================================================
-- You can uncomment this section if you want sample data

/*
-- Sample modules for Article Management
INSERT INTO master_modules (name, description, path_url, action_type, status_id, is_active) VALUES
('View Articles', 'View article list and details', '/api/articles', 'view', 1, true),
('Create Article', 'Create new article', '/api/articles/create', 'create', 1, true),
('Edit Article', 'Edit existing article', '/api/articles/edit', 'edit', 1, true),
('Delete Article', 'Delete article', '/api/articles/delete', 'delete', 1, true),
('Approve Article', 'Approve article submission', '/api/articles/approve', 'approve', 1, true),
('Export Articles', 'Export articles to file', '/api/articles/export', 'export', 1, true)
ON CONFLICT DO NOTHING;

-- Sample modules for User Management
INSERT INTO master_modules (name, description, path_url, action_type, status_id, is_active) VALUES
('View Users', 'View user list and details', '/api/users', 'view', 1, true),
('Create User', 'Create new user', '/api/users/create', 'create', 1, true),
('Edit User', 'Edit existing user', '/api/users/edit', 'edit', 1, true),
('Delete User', 'Delete user', '/api/users/delete', 'delete', 1, true)
ON CONFLICT DO NOTHING;
*/

-- ============================================================================
-- Step 6: Verification queries
-- ============================================================================
-- Run these queries to verify the migration

-- Check if tables exist
DO $$
DECLARE
    v_menu_modules_exists BOOLEAN;
    v_user_level_module_accesses_exists BOOLEAN;
    v_action_type_exists BOOLEAN;
BEGIN
    -- Check menu_modules table
    SELECT EXISTS (
        SELECT FROM information_schema.tables 
        WHERE table_schema = 'public' 
        AND table_name = 'menu_modules'
    ) INTO v_menu_modules_exists;
    
    -- Check user_level_module_accesses table
    SELECT EXISTS (
        SELECT FROM information_schema.tables 
        WHERE table_schema = 'public' 
        AND table_name = 'user_level_module_accesses'
    ) INTO v_user_level_module_accesses_exists;
    
    -- Check action_type column
    SELECT EXISTS (
        SELECT FROM information_schema.columns 
        WHERE table_schema = 'public' 
        AND table_name = 'master_modules' 
        AND column_name = 'action_type'
    ) INTO v_action_type_exists;
    
    -- Report results
    RAISE NOTICE '========================================';
    RAISE NOTICE 'Migration Verification Results:';
    RAISE NOTICE '========================================';
    
    IF v_menu_modules_exists THEN
        RAISE NOTICE '✓ Table menu_modules created successfully';
    ELSE
        RAISE WARNING '✗ Table menu_modules NOT created';
    END IF;
    
    IF v_user_level_module_accesses_exists THEN
        RAISE NOTICE '✓ Table user_level_module_accesses created successfully';
    ELSE
        RAISE WARNING '✗ Table user_level_module_accesses NOT created';
    END IF;
    
    IF v_action_type_exists THEN
        RAISE NOTICE '✓ Column action_type added to master_modules';
    ELSE
        RAISE WARNING '✗ Column action_type NOT added to master_modules';
    END IF;
    
    RAISE NOTICE '========================================';
    
    IF v_menu_modules_exists AND v_user_level_module_accesses_exists AND v_action_type_exists THEN
        RAISE NOTICE 'Migration completed successfully! ✓';
    ELSE
        RAISE WARNING 'Migration completed with errors! Please check above.';
    END IF;
    
    RAISE NOTICE '========================================';
END $$;

-- Show table statistics
SELECT 
    'menu_modules' as table_name,
    COUNT(*) as row_count
FROM menu_modules
UNION ALL
SELECT 
    'user_level_module_accesses' as table_name,
    COUNT(*) as row_count
FROM user_level_module_accesses;