-- Versioned Smart Package workspace. The JSON preserves Lego block instances,
-- ordering, geometry formulas and manual overrides; flattened project rows remain
-- the authority used by Final Review, PDF and exports.
ALTER TABLE project_materials
  ADD COLUMN IF NOT EXISTS material_id INT NULL AFTER project_id,
  ADD COLUMN IF NOT EXISTS package_instance_id VARCHAR(100) NULL AFTER project_id,
  ADD COLUMN IF NOT EXISTS source_package_id INT NULL AFTER package_instance_id,
  ADD COLUMN IF NOT EXISTS price_source VARCHAR(120) NULL AFTER material_source,
  ADD COLUMN IF NOT EXISTS price_source_updated_at DATETIME NULL AFTER price_source,
  MODIFY COLUMN material_source ENUM('manual','database','bygma_api','package') DEFAULT 'manual';

CREATE INDEX IF NOT EXISTS idx_project_materials_material_id
  ON project_materials (material_id);
CREATE INDEX IF NOT EXISTS idx_project_materials_package_instance
  ON project_materials (project_id, package_instance_id);

ALTER TABLE project_rentals
  ADD COLUMN IF NOT EXISTS package_instance_id VARCHAR(100) NULL AFTER project_id,
  ADD COLUMN IF NOT EXISTS source_package_id INT NULL AFTER package_instance_id;

CREATE INDEX IF NOT EXISTS idx_project_rentals_package_instance
  ON project_rentals (project_id, package_instance_id);

CREATE TABLE IF NOT EXISTS project_smart_package_workspaces (
  id INT AUTO_INCREMENT PRIMARY KEY,
  project_id INT NOT NULL,
  version INT NOT NULL DEFAULT 0,
  workspace_json JSON NOT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  UNIQUE KEY unique_project_workspace (project_id),
  CONSTRAINT fk_smart_package_workspace_project
    FOREIGN KEY (project_id) REFERENCES customer_projects(id) ON DELETE CASCADE
);

-- project_labor is an upsert target and must contain exactly one row per project.
-- Retain the newest legacy row before adding the idempotent unique constraint.
DELETE stale
FROM project_labor stale
JOIN project_labor newest
  ON newest.project_id = stale.project_id AND newest.id > stale.id;
SELECT project_id, COUNT(*) AS remaining_rows
FROM project_labor
GROUP BY project_id
HAVING COUNT(*) > 1;
CREATE UNIQUE INDEX IF NOT EXISTS unique_project_labor ON project_labor (project_id);