from flask_login import UserMixin
from app import db
from datetime import datetime

class Company(db.Model):
    __tablename__ = 'companies'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(200), nullable=False)
    type = db.Column(db.String(20), nullable=False)  # 'management', 'owner'
    email = db.Column(db.String(100))
    phone = db.Column(db.String(20))
    created_at = db.Column(db.DateTime, default=datetime.utcnow)

class User(UserMixin, db.Model):
    __tablename__ = 'users'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100), nullable=False)
    email = db.Column(db.String(100), unique=True, nullable=False)
    password_hash = db.Column(db.String(200), nullable=False)
    company_id = db.Column(db.Integer, db.ForeignKey('companies.id'))
    role = db.Column(db.String(20), default='admin')  # 'admin', 'captain'
    is_active = db.Column(db.Boolean, default=True)
    is_super_admin = db.Column(db.Boolean, default=False)
    company = db.relationship('Company', backref='users')

class Vessel(db.Model):
    __tablename__ = 'vessels'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100), nullable=False)
    hin = db.Column(db.String(50))
    make = db.Column(db.String(50))
    model = db.Column(db.String(50))
    length = db.Column(db.Float)
    engines = db.Column(db.String(200))
    fuel_consumption_14knots = db.Column(db.Float)  # L/h
    owner_company_id = db.Column(db.Integer, db.ForeignKey('companies.id'))
    management_company_id = db.Column(db.Integer, db.ForeignKey('companies.id'))
    management_company = db.relationship('Company', foreign_keys=[management_company_id], backref='managed_vessels')
    plan_id = db.Column(db.Integer)
    charter_percentage = db.Column(db.Float, default=25.0)  # % para management
    base_rate_4h = db.Column(db.Float)
    hourly_rate_extra = db.Column(db.Float)
    max_passengers = db.Column(db.Integer, default=12)
    is_active = db.Column(db.Boolean, default=True)

class Captain(db.Model):
    __tablename__ = 'captains'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100), nullable=False)
    phone = db.Column(db.String(20))
    license_number = db.Column(db.String(50))
    hourly_rate = db.Column(db.Float)
    company_id = db.Column(db.Integer, db.ForeignKey('companies.id'))
    user_id = db.Column(db.Integer, db.ForeignKey('users.id'))
    license_type = db.Column(db.String(20), default='private')  # 'private' | 'six_pack' | 'master'

class Route(db.Model):
    __tablename__ = 'routes'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100), nullable=False)
    distance_nm = db.Column(db.Float)
    time_hours_14knots = db.Column(db.Float)
    points_of_interest = db.Column(db.Text)
    deviation_charge_usd = db.Column(db.Float, default=50)

class Charter(db.Model):
    __tablename__ = 'charters'
    id = db.Column(db.Integer, primary_key=True)
    vessel_id = db.Column(db.Integer, db.ForeignKey('vessels.id'))
    route_id = db.Column(db.Integer, db.ForeignKey('routes.id'))
    charterer_name = db.Column(db.String(100))
    charterer_phone = db.Column(db.String(20))
    charterer_email = db.Column(db.String(100))
    start_datetime = db.Column(db.DateTime)
    hours = db.Column(db.Float)
    total_base_rate = db.Column(db.Float)
    management_percentage = db.Column(db.Float)
    management_earnings = db.Column(db.Float)
    owner_earnings = db.Column(db.Float)
    status = db.Column(db.String(20), default='draft')  # draft, signed, completed, paid
    contract_pdf = db.Column(db.String(200))
    completed_at = db.Column(db.DateTime)
    insurance_rider_number = db.Column(db.String(60))
    insurer_name = db.Column(db.String(100))
    coverage_amount = db.Column(db.Float)
    damage_waiver = db.Column(db.Float, default=0)
    captain_id = db.Column(db.Integer, db.ForeignKey('captains.id'))
    captain = db.relationship('Captain', backref='charters')
    vessel = db.relationship('Vessel', backref='charters')
    route = db.relationship('Route', backref='charters')

class WorkOrder(db.Model):
    __tablename__ = 'work_orders'
    id = db.Column(db.Integer, primary_key=True)
    vessel_id = db.Column(db.Integer, db.ForeignKey('vessels.id'))
    requested_by_company_id = db.Column(db.Integer, db.ForeignKey('companies.id'))
    approved_by_owner_id = db.Column(db.Integer)
    description = db.Column(db.Text)
    estimated_cost = db.Column(db.Float)
    actual_cost = db.Column(db.Float)
    status = db.Column(db.String(20), default='pending')  # pending, approved, done, rejected
    priority = db.Column(db.String(20), default='normal')  # normal, urgente, emergencia
    invoice_number = db.Column(db.String(60))              # número de factura/invoice
    notified_at = db.Column(db.DateTime)
    approved_at = db.Column(db.DateTime)          # timestamp de aprobacion del owner
    approved_by_name = db.Column(db.String(100))  # nombre del owner que aprobó
    rejected_at = db.Column(db.DateTime)
    rejection_reason = db.Column(db.String(300))
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    completed_at = db.Column(db.DateTime)
    vessel = db.relationship('Vessel', backref='work_orders')

class Voucher(db.Model):
    __tablename__ = 'vouchers'
    id = db.Column(db.Integer, primary_key=True)
    charter_id = db.Column(db.Integer, db.ForeignKey('charters.id'))
    total_charged = db.Column(db.Float)
    fuel_actual_liters = db.Column(db.Float)
    deviation_charged = db.Column(db.Float, default=0)
    speed_extra_charged = db.Column(db.Float, default=0)
    tip_amount = db.Column(db.Float)
    tip_percentage = db.Column(db.Float, default=18)
    issued_at = db.Column(db.DateTime, default=datetime.utcnow)
    paid_at = db.Column(db.DateTime)
    charter = db.relationship('Charter', backref='voucher')

class AccountingVessel(db.Model):
    __tablename__ = 'accounting_vessel'
    id = db.Column(db.Integer, primary_key=True)
    vessel_id = db.Column(db.Integer, db.ForeignKey('vessels.id'))
    month = db.Column(db.Integer)
    year = db.Column(db.Integer)
    charter_revenue = db.Column(db.Float, default=0)
    plan_revenue = db.Column(db.Float, default=0)
    fuel_cost = db.Column(db.Float, default=0)
    maintenance_cost = db.Column(db.Float, default=0)
    cleaning_cost = db.Column(db.Float, default=0)
    detailing_cost = db.Column(db.Float, default=0)
    teak_cost = db.Column(db.Float, default=0)
    net_profit = db.Column(db.Float, default=0)

# ── Ledger de transacciones por embarcación ──────────────────────────
class AccountingEntry(db.Model):
    __tablename__ = 'accounting_entries'
    id = db.Column(db.Integer, primary_key=True)
    vessel_id = db.Column(db.Integer, db.ForeignKey('vessels.id'), nullable=False)
    date = db.Column(db.Date, nullable=False)
    entry_type = db.Column(db.String(10), nullable=False)   # 'income' | 'expense'
    category = db.Column(db.String(30), nullable=False)
    # income: 'charter' | 'plan_subscription' | 'other_income'
    # expense: 'work_order' | 'fuel' | 'cleaning' | 'detailing' | 'teak' | 'marina' | 'other_expense'
    description = db.Column(db.String(300))
    amount = db.Column(db.Float, nullable=False)
    invoice_number = db.Column(db.String(60))
    reference_type = db.Column(db.String(20))   # 'charter' | 'work_order' | 'fuel_entry' | None
    reference_id = db.Column(db.Integer)
    notes = db.Column(db.Text)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    vessel = db.relationship('Vessel', backref='accounting_entries')

# ── Registro de combustible ──────────────────────────────────────────
class FuelEntry(db.Model):
    __tablename__ = 'fuel_entries'
    id = db.Column(db.Integer, primary_key=True)
    vessel_id = db.Column(db.Integer, db.ForeignKey('vessels.id'), nullable=False)
    charter_id = db.Column(db.Integer, db.ForeignKey('charters.id'), nullable=True)
    date = db.Column(db.Date, nullable=False)
    liters = db.Column(db.Float)
    price_per_liter = db.Column(db.Float)
    total_cost = db.Column(db.Float, nullable=False)
    supplier = db.Column(db.String(100))
    invoice_number = db.Column(db.String(60))
    notes = db.Column(db.Text)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    vessel = db.relationship('Vessel', backref='fuel_entries')
    charter = db.relationship('Charter', backref='fuel_entries')

# ── Documentos adjuntos (invoices, contratos, fotos) ─────────────────
class Document(db.Model):
    __tablename__ = 'documents'
    id = db.Column(db.Integer, primary_key=True)
    vessel_id = db.Column(db.Integer, db.ForeignKey('vessels.id'))
    reference_type = db.Column(db.String(20))   # 'charter'|'work_order'|'fuel_entry'|'general'
    reference_id = db.Column(db.Integer)
    doc_type = db.Column(db.String(20))          # 'invoice'|'receipt'|'contract'|'photo'|'other'
    filename = db.Column(db.String(200))
    original_name = db.Column(db.String(200))
    file_size = db.Column(db.Integer)
    uploaded_at = db.Column(db.DateTime, default=datetime.utcnow)
    notes = db.Column(db.Text)
    vessel = db.relationship('Vessel', backref='documents')