-- Migration 009: Create projects table and add FK to project_scopes
-- Project: one-time work, MUST have Customer, MAY have AccountAddress

-- Project (one-time work)
CREATE TABLE projects (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),

    -- MUST have a customer
    customer_id UUID NOT NULL REFERENCES customers(id) ON DELETE CASCADE,

    -- MAY have a location (AccountAddress) OR standalone address
    account_address_id UUID REFERENCES account_addresses(id) ON DELETE SET NULL,

    -- Standalone address (used when account_address_id is NULL)
    street_address VARCHAR(255),
    city VARCHAR(100),
    state VARCHAR(100),
    zip_code VARCHAR(20),

    -- XOR constraint: either account_address OR standalone address
    CONSTRAINT project_addr_xor_check CHECK (
        (account_address_id IS NOT NULL AND street_address IS NULL AND city IS NULL AND state IS NULL AND zip_code IS NULL)
        OR
        (account_address_id IS NULL AND street_address IS NOT NULL AND city IS NOT NULL AND state IS NOT NULL AND zip_code IS NOT NULL)
        OR
        (account_address_id IS NULL AND street_address IS NULL AND city IS NULL AND state IS NULL AND zip_code IS NULL)
    ),

    name VARCHAR(200) NOT NULL,
    date DATE NOT NULL,
    status work_status NOT NULL DEFAULT 'SCHEDULED',

    notes TEXT,

    -- Financials
    labor DECIMAL(10, 2) NOT NULL DEFAULT 0,
    amount DECIMAL(10, 2) NOT NULL DEFAULT 0,

    -- Scope reference (optional, assigned directly to project)
    scope_id UUID REFERENCES project_scopes(id) ON DELETE SET NULL,

    -- External integrations
    calendar_event_id VARCHAR(255),
    wave_service_id VARCHAR(255)
);

-- Now add FK from project_scopes to projects
ALTER TABLE project_scopes
    ADD CONSTRAINT fk_project_scopes_project
    FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE;

-- M2M: Project to TeamProfile (assigned team members)
CREATE TABLE project_team_members (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),

    project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
    team_profile_id UUID NOT NULL REFERENCES team_profiles(id) ON DELETE CASCADE,

    UNIQUE (project_id, team_profile_id)
);

-- Indexes
CREATE INDEX idx_projects_customer ON projects(customer_id);
CREATE INDEX idx_projects_address ON projects(account_address_id);
CREATE INDEX idx_projects_date ON projects(date);
CREATE INDEX idx_projects_status ON projects(status);
CREATE INDEX idx_project_team_members_project ON project_team_members(project_id);
CREATE INDEX idx_project_team_members_team ON project_team_members(team_profile_id);