-- Migration 007: Create project scope tables
-- ProjectScope: assigned directly to a Project (not location-based)
-- Structure: ProjectScope → ProjectScopeCategory → ProjectScopeTask

-- Forward declaration: projects table will be created in migration 009
-- We create project_scopes with a deferred FK constraint

-- Project scope assigned directly to a project
CREATE TABLE project_scopes (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),

    name VARCHAR(255) NOT NULL,
    description TEXT,

    -- Project reference (FK added in migration 009 after projects table exists)
    project_id UUID NOT NULL,

    -- Optional: if project is at a specific location
    account_id UUID REFERENCES accounts(id) ON DELETE SET NULL,
    account_address_id UUID REFERENCES account_addresses(id) ON DELETE SET NULL,

    is_active BOOLEAN NOT NULL DEFAULT TRUE
);

-- Category within a project scope (equivalent to Area for services)
CREATE TABLE project_scope_categories (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),

    scope_id UUID NOT NULL REFERENCES project_scopes(id) ON DELETE CASCADE,

    name VARCHAR(255) NOT NULL,
    "order" INTEGER NOT NULL CHECK ("order" >= 0)
);

-- Task within a project scope category
CREATE TABLE project_scope_tasks (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),

    category_id UUID NOT NULL REFERENCES project_scope_categories(id) ON DELETE CASCADE,

    -- Three descriptions for different audiences
    scope_description TEXT NOT NULL,         -- Customer-facing
    checklist_description TEXT NOT NULL,     -- QA/punchlist format
    session_description TEXT NOT NULL,       -- Team member work instructions

    frequency task_frequency NOT NULL DEFAULT 'AS_NEEDED',
    "order" INTEGER NOT NULL CHECK ("order" >= 0),
    estimated_minutes INTEGER CHECK (estimated_minutes >= 0)
);

-- Indexes
CREATE INDEX idx_project_scopes_project ON project_scopes(project_id);
CREATE INDEX idx_project_scopes_account ON project_scopes(account_id);
CREATE INDEX idx_project_scope_categories_scope ON project_scope_categories(scope_id);
CREATE INDEX idx_project_scope_tasks_category ON project_scope_tasks(category_id);