defmodule PolicyServiceWeb.Schemas.Policy do
  alias OpenApiSpex.Schema

  defmodule PaginationMeta do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "PaginationMeta",
      type: :object,
      properties: %{
        total_count: %Schema{type: :integer},
        total_pages: %Schema{type: :integer},
        current_page: %Schema{type: :integer},
        page_size: %Schema{type: :integer},
        has_next: %Schema{type: :boolean},
        has_prev: %Schema{type: :boolean}
      }
    })
  end

  defmodule InsuredIndividual do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "InsuredIndividual",
      type: :object,
      required: [:type, :name, :date_of_birth, :document_id, :gender],
      properties: %{
        type: %Schema{type: :string, enum: ["individual"]},
        name: %Schema{type: :string, example: "Juan Pérez"},
        date_of_birth: %Schema{type: :string, format: :date, example: "1985-06-15"},
        document_id: %Schema{type: :string, example: "8-123-456"},
        gender: %Schema{type: :string, enum: ["male", "female"], example: "male"},
        email: %Schema{type: :string, format: :email, example: "juan@example.com"},
        phone: %Schema{type: :string, example: "+507-1234-5678"},
        address: %Schema{type: :string, example: "Calle 50, Panama City"}
      }
    })
  end

  defmodule InsuredCorporate do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "InsuredCorporate",
      type: :object,
      required: [:type, :company_name, :ruc, :legal_rep_name, :legal_rep_document],
      properties: %{
        type: %Schema{type: :string, enum: ["corporate"]},
        company_name: %Schema{type: :string, example: "Empresa ABC S.A."},
        ruc: %Schema{type: :string, example: "123456-1-123456"},
        legal_rep_name: %Schema{type: :string, example: "María García"},
        legal_rep_document: %Schema{type: :string, example: "8-456-789"},
        email: %Schema{type: :string, format: :email, example: "contact@empresa-abc.com"},
        phone: %Schema{type: :string, example: "+507-1234-5678"},
        address: %Schema{type: :string, example: "Calle 50, Panama City"}
      }
    })
  end

  defmodule Insured do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "Insured",
      oneOf: [InsuredIndividual, InsuredCorporate]
    })
  end

  defmodule BuyerIndividual do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "BuyerIndividual",
      type: :object,
      required: [:type, :name, :date_of_birth, :document_id],
      properties: %{
        type: %Schema{type: :string, enum: ["individual"]},
        name: %Schema{type: :string, example: "María García"},
        date_of_birth: %Schema{type: :string, format: :date, example: "1980-03-20"},
        document_id: %Schema{type: :string, example: "8-456-789"},
        email: %Schema{type: :string, format: :email, example: "maria@example.com"},
        phone: %Schema{type: :string, example: "+507-8765-4321"},
        address: %Schema{type: :string, example: "Calle 75, Panama City"}
      }
    })
  end

  defmodule BuyerCorporate do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "BuyerCorporate",
      type: :object,
      required: [:type, :company_name, :ruc, :legal_rep_name, :legal_rep_document],
      properties: %{
        type: %Schema{type: :string, enum: ["corporate"]},
        company_name: %Schema{type: :string, example: "Empresa XYZ S.A."},
        ruc: %Schema{type: :string, example: "987654-1-987654"},
        legal_rep_name: %Schema{type: :string, example: "Carlos López"},
        legal_rep_document: %Schema{type: :string, example: "8-789-012"},
        email: %Schema{type: :string, format: :email, example: "carlos@empresa-xyz.com"},
        phone: %Schema{type: :string, example: "+507-8765-4321"},
        address: %Schema{type: :string, example: "Calle 100, Panama City"}
      }
    })
  end

  defmodule Buyer do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "Buyer",
      oneOf: [BuyerIndividual, BuyerCorporate]
    })
  end

  # ---------------------------------------------------------------------------
  # Policy details — one per policy type
  # ---------------------------------------------------------------------------

  defmodule ApplicantIndividual do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "ApplicantIndividual",
      type: :object,
      required: [:name, :date_of_birth, :document_id],
      properties: %{
        name: %Schema{type: :string, example: "Juan Pérez"},
        date_of_birth: %Schema{type: :string, format: :date, example: "1985-06-15"},
        document_id: %Schema{type: :string, example: "8-123-456"}
      }
    })
  end

  defmodule ApplicantCorporate do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "ApplicantCorporate",
      type: :object,
      required: [:company_name, :ruc, :legal_rep_name, :legal_rep_document],
      properties: %{
        company_name: %Schema{type: :string, example: "Empresa ABC S.A."},
        ruc: %Schema{type: :string, example: "123456-1-123456"},
        legal_rep_name: %Schema{type: :string, example: "María García"},
        legal_rep_document: %Schema{type: :string, example: "8-456-789"}
      }
    })
  end

  defmodule ApplicantInfo do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "ApplicantInfo",
      oneOf: [ApplicantIndividual, ApplicantCorporate]
    })
  end

  # ---------------------------------------------------------------------------
  # Policy details — one per policy type
  # ---------------------------------------------------------------------------

  defmodule CarPolicyDetails do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "CarPolicyDetails",
      type: :object,
      required: [
        :plate,
        :make,
        :model,
        :year,
        :use_type,
        :car_type,
        :rc_limits,
        :market_value,
        :requested_value
      ],
      properties: %{
        plate: %Schema{type: :string, example: "ABC-1234"},
        make: %Schema{type: :string, example: "Toyota"},
        model: %Schema{type: :string, example: "Corolla"},
        year: %Schema{type: :integer, example: 2022},
        use_type: %Schema{type: :string, enum: ["private", "commercial", "bus", "taxi", "school"]},
        car_type: %Schema{
          type: :string,
          enum: [
            "sedan",
            "suv",
            "hatchback",
            "coupe",
            "convertible",
            "pickup",
            "van",
            "minivan",
            "truck"
          ]
        },
        chassis_number: %Schema{type: :string, example: "9BWZZZ377VT004251"},
        engine_number: %Schema{type: :string, example: "1NZ-FE-1234567"},
        rc_limits: %Schema{
          type: :object,
          properties: %{
            bodily_injury: %Schema{type: :number, example: 50000},
            property_damage: %Schema{type: :number, example: 25000}
          }
        },
        market_value: %Schema{type: :number, example: 18000},
        requested_value: %Schema{type: :number, example: 20000}
      }
    })
  end

  defmodule LifePolicyDetails do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "LifePolicyDetails",
      type: :object,
      required: [:coverage_type, :coverage_amount, :coverage_years, :smoker],
      properties: %{
        coverage_type: %Schema{
          type: :string,
          enum: ["banking", "protection"]
        },
        coverage_amount: %Schema{type: :number, example: 100_000},
        coverage_years: %Schema{type: :integer, example: 10},
        smoker: %Schema{type: :boolean, example: false},
        medications: %Schema{type: :array, items: %Schema{type: :string}, example: ["Aspirin", "Lisinopril"]},
        surgeries: %Schema{type: :array, items: %Schema{type: :string}, example: ["Appendectomy, 2015"]},
        weight: %Schema{type: :number, example: 70},
        height: %Schema{type: :number, example: 175}
      }
    })
  end

  defmodule FireStructurePolicyDetails do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "FireStructurePolicyDetails",
      type: :object,
      required: [:location, :property_value, :property_use, :security_measures, :market_value],
      properties: %{
        location: %Schema{type: :string, example: "Calle 50, Panama City"},
        property_value: %Schema{type: :number, example: 250_000},
        property_use: %Schema{type: :string, example: "residential"},
        security_measures: %Schema{type: :array, items: %Schema{type: :string}},
        market_value: %Schema{type: :number, example: 260_000}
      }
    })
  end

  defmodule FireContentsPolicyDetails do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "FireContentsPolicyDetails",
      type: :object,
      required: [:location, :contents_value, :property_use, :security_measures],
      properties: %{
        location: %Schema{type: :string, example: "Calle 50, Panama City"},
        contents_value: %Schema{type: :number, example: 50_000},
        property_use: %Schema{type: :string, example: "residential"},
        security_measures: %Schema{type: :array, items: %Schema{type: :string}},
        high_value_items: %Schema{
          type: :array,
          items: %Schema{
            type: :object,
            properties: %{
              description: %Schema{type: :string},
              value: %Schema{type: :number},
              type: %Schema{type: :string, enum: ["electronic", "other"]}
            }
          }
        }
      }
    })
  end

  defmodule PolicyDetails do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "PolicyDetails",
      oneOf: [
        CarPolicyDetails,
        LifePolicyDetails,
        FireStructurePolicyDetails,
        FireContentsPolicyDetails
      ]
    })
  end

  # ---------------------------------------------------------------------------
  # Shared
  # ---------------------------------------------------------------------------

  defmodule SelectedProvider do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "SelectedProvider",
      type: :object,
      required: [:provider_id, :email],
      properties: %{
        provider_id: %Schema{type: :string, format: :uuid},
        email: %Schema{type: :string, format: :email}
      }
    })
  end

  defmodule Plan do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "Plan",
      type: :object,
      properties: %{
        plan_id: %Schema{type: :string},
        name: %Schema{type: :string},
        premium: %Schema{type: :number},
        coverage_details: %Schema{type: :string},
        deductible: %Schema{type: :number, nullable: true},
        coverage_limit: %Schema{type: :number, nullable: true}
      }
    })
  end

  defmodule QuoteData do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "QuoteData",
      type: :object,
      properties: %{
        quote_id: %Schema{type: :string},
        valid_until: %Schema{type: :string, format: :date},
        received_at: %Schema{type: :string, format: :"date-time"},
        plans: %Schema{type: :array, items: Plan}
      }
    })
  end

  # ---------------------------------------------------------------------------
  # Requests
  # ---------------------------------------------------------------------------

  defmodule CreatePolicyRequest do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "CreatePolicyRequest",
      type: :object,
      required: [:policy_type, :insured, :buyer, :policy_details, :selected_providers],
      properties: %{
        policy_type: %Schema{
          type: :string,
          enum: ["car", "life", "fire_structure", "fire_contents"],
          description: "Determines the shape of policy_details"
        },
        insured: Insured,
        buyer: Buyer,
        policy_details: PolicyDetails,
        selected_providers: %Schema{type: :array, items: SelectedProvider, minItems: 1}
      }
    })
  end

  defmodule AcceptQuoteRequest do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "AcceptQuoteRequest",
      type: :object,
      required: [:accepted_plan_id],
      properties: %{
        accepted_plan_id: %Schema{
          type: :string,
          description: "Plan ID to accept"
        }
      }
    })
  end

  # ---------------------------------------------------------------------------
  # Responses
  # ---------------------------------------------------------------------------

  defmodule QuoteResponse do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "QuoteResponse",
      type: :object,
      properties: %{
        application_id: %Schema{type: :string},
        status: %Schema{type: :string}
      }
    })
  end

  defmodule PolicySummary do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "PolicySummary",
      type: :object,
      properties: %{
        application_id: %Schema{type: :string},
        policy_type: %Schema{
          type: :string,
          enum: ["car", "life", "fire_structure", "fire_contents"]
        },
        status: %Schema{
          type: :string,
          enum: ["quote_requested", "quotes_received", "awaiting_policy", "issued"]
        },
        insured: Insured,
        buyer: Buyer,
        policy_details: PolicyDetails,
        provider_policy_number: %Schema{type: :string, nullable: true},
        submitted_at: %Schema{type: :string, format: :"date-time"}
      }
    })
  end

  defmodule PolicyDetail do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "PolicyDetail",
      type: :object,
      properties: %{
        application_id: %Schema{type: :string},
        org_id: %Schema{type: :string},
        submitted_by: %Schema{type: :string},
        policy_type: %Schema{
          type: :string,
          enum: ["car", "life", "fire_structure", "fire_contents"]
        },
        status: %Schema{
          type: :string,
          enum: ["quote_requested", "quotes_received", "awaiting_policy", "issued"]
        },
        insured: Insured,
        buyer: Buyer,
        policy_details: PolicyDetails,
        selected_providers: %Schema{type: :array, items: %Schema{type: :string}},
        quotes: %Schema{type: :object, additionalProperties: QuoteData},
        accepted_plan_id: %Schema{type: :string, nullable: true},
        accepted_by: %Schema{type: :string, nullable: true},
        provider_policy_number: %Schema{type: :string, nullable: true},
        premium: %Schema{type: :number, nullable: true},
        effective_date: %Schema{type: :string, format: :date, nullable: true},
        expiry_date: %Schema{type: :string, format: :date, nullable: true},
        submitted_at: %Schema{type: :string, format: :"date-time"},
        solicitation_sent_at: %Schema{type: :string, format: :"date-time", nullable: true},
        issued_at: %Schema{type: :string, format: :"date-time", nullable: true}
      }
    })
  end

  defmodule PolicyListResponse do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "PolicyListResponse",
      type: :object,
      properties: %{
        data: %Schema{type: :array, items: PolicySummary},
        meta: PaginationMeta
      }
    })
  end

  defmodule PolicyDetailResponse do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "PolicyDetailResponse",
      type: :object,
      properties: %{
        data: PolicyDetail
      }
    })
  end

  defmodule ErrorResponse do
    require OpenApiSpex

    OpenApiSpex.schema(%{
      title: "ErrorResponse",
      type: :object,
      properties: %{
        error: %Schema{type: :string}
      }
    })
  end
end