defmodule Localiser.Web.Schemas do
  alias OpenApiSpex.Schema

  defmodule User do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "User", type: :object,
      properties: %{
        id:       %Schema{type: :integer},
        username: %Schema{type: :string},
        is_admin: %Schema{type: :boolean}
      },
      required: [:id, :username, :is_admin]
    })
  end

  defmodule Floor do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "Floor", type: :object,
      properties: %{
        id:     %Schema{type: :integer},
        name:   %Schema{type: :string},
        width:  %Schema{type: :number, format: :float},
        height: %Schema{type: :number, format: :float}
      },
      required: [:id, :name, :width, :height]
    })
  end

  defmodule Room do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "Room", type: :object,
      properties: %{
        id:       %Schema{type: :integer},
        name:     %Schema{type: :string},
        floor_id: %Schema{type: :integer},
        x:        %Schema{type: :number, format: :float},
        y:        %Schema{type: :number, format: :float},
        width:    %Schema{type: :number, format: :float},
        height:   %Schema{type: :number, format: :float}
      },
      required: [:id, :name, :floor_id, :x, :y, :width, :height]
    })
  end

  defmodule Sensor do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "Sensor", type: :object,
      properties: %{
        id:        %Schema{type: :integer},
        sensor_id: %Schema{type: :string},
        confirmed: %Schema{type: :boolean},
        room_id:   %Schema{type: :integer, nullable: true},
        floor_x:   %Schema{type: :number, format: :float, nullable: true},
        floor_y:   %Schema{type: :number, format: :float, nullable: true},
        rssi_ref:  %Schema{type: :number, format: :float, nullable: true}
      },
      required: [:id, :sensor_id, :confirmed]
    })
  end

  defmodule Tag do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "Tag", type: :object,
      properties: %{
        id:        %Schema{type: :integer},
        tag_id:    %Schema{type: :string},
        name:      %Schema{type: :string},
        color:     %Schema{type: :string, nullable: true},
        room_id:   %Schema{type: :integer, nullable: true},
        last_seen: %Schema{type: :string, format: :"date-time", nullable: true}
      },
      required: [:id, :tag_id, :name, :color, :room_id, :last_seen]
    })
  end

  defmodule OnboardingStatus do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "OnboardingStatus", type: :object,
      properties: %{
        has_admin:          %Schema{type: :boolean},
        has_floors:         %Schema{type: :boolean},
        has_rooms:          %Schema{type: :boolean},
        has_sensors_placed: %Schema{type: :boolean},
        has_tags:           %Schema{type: :boolean}
      },
      required: [:has_admin, :has_floors, :has_rooms, :has_sensors_placed, :has_tags]
    })
  end

  defmodule TokenResponse do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "TokenResponse", type: :object,
      properties: %{
        token: %Schema{type: :string},
        user:  User
      },
      required: [:token, :user]
    })
  end

  defmodule Error do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "Error", type: :object,
      properties: %{error: %Schema{type: :string}},
      required: [:error]
    })
  end

  defmodule ValidationErrors do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "ValidationErrors", type: :object,
      properties: %{
        errors: %Schema{
          type: :object,
          additionalProperties: %Schema{type: :array, items: %Schema{type: :string}}
        }
      }
    })
  end

  defmodule CommandSent do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "CommandSent", type: :object,
      properties: %{status: %Schema{type: :string, enum: ["ok"]}},
      required: [:status]
    })
  end

  defmodule CalibrationStatus do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "CalibrationStatus", type: :object,
      properties: %{status: %Schema{type: :string, enum: ["calibrating", "idle"]}},
      required: [:status]
    })
  end

  # ── Request body schemas ────────────────────────────────────────────────────

  defmodule SetupParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "SetupParams", type: :object,
      properties: %{
        username: %Schema{type: :string},
        password: %Schema{type: :string, format: :password}
      },
      required: [:username, :password]
    })
  end

  defmodule SessionParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "SessionParams", type: :object,
      properties: %{
        username: %Schema{type: :string},
        password: %Schema{type: :string, format: :password}
      },
      required: [:username, :password]
    })
  end

  defmodule UserCreateParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "UserCreateParams", type: :object,
      properties: %{
        username: %Schema{type: :string},
        password: %Schema{type: :string, format: :password},
        is_admin: %Schema{type: :boolean, default: false}
      },
      required: [:username, :password]
    })
  end

  defmodule UserUpdateParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "UserUpdateParams", type: :object,
      properties: %{
        username: %Schema{type: :string},
        password: %Schema{type: :string, format: :password}
      }
    })
  end

  defmodule FloorParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "FloorParams", type: :object,
      properties: %{
        name:   %Schema{type: :string},
        width:  %Schema{type: :number, format: :float},
        height: %Schema{type: :number, format: :float}
      },
      required: [:name, :width, :height]
    })
  end

  defmodule FloorUpdateParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "FloorUpdateParams", type: :object,
      properties: %{
        name:   %Schema{type: :string},
        width:  %Schema{type: :number, format: :float},
        height: %Schema{type: :number, format: :float}
      }
    })
  end

  defmodule RoomParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "RoomParams", type: :object,
      properties: %{
        name:   %Schema{type: :string},
        x:      %Schema{type: :number, format: :float},
        y:      %Schema{type: :number, format: :float},
        width:  %Schema{type: :number, format: :float},
        height: %Schema{type: :number, format: :float}
      },
      required: [:name, :x, :y, :width, :height]
    })
  end

  defmodule RoomUpdateParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "RoomUpdateParams", type: :object,
      properties: %{
        name:   %Schema{type: :string},
        x:      %Schema{type: :number, format: :float},
        y:      %Schema{type: :number, format: :float},
        width:  %Schema{type: :number, format: :float},
        height: %Schema{type: :number, format: :float}
      }
    })
  end

  defmodule SensorEnrollParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "SensorEnrollParams", type: :object,
      properties: %{sensor_id: %Schema{type: :string}},
      required: [:sensor_id]
    })
  end

  defmodule SensorReconfigureParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "SensorReconfigureParams", type: :object,
      properties: %{
        ssid:        %Schema{type: :string},
        password:    %Schema{type: :string, format: :password},
        mqtt_broker: %Schema{type: :string, required: false},
        mqtt_port:   %Schema{type: :integer, required: false}
      }
    })
  end

  defmodule SensorUpdateParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "SensorUpdateParams", type: :object,
      properties: %{rssi_ref: %Schema{type: :number, format: :float}}
    })
  end

  defmodule SensorPlaceParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "SensorPlaceParams", type: :object,
      properties: %{
        room_id: %Schema{type: :integer},
        x:       %Schema{type: :number, format: :float},
        y:       %Schema{type: :number, format: :float}
      },
      required: [:room_id, :x, :y]
    })
  end

  defmodule CalibrationStartParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "CalibrationStartParams", type: :object,
      properties: %{
        reference_distance: %Schema{
          type: :number, format: :float,
          description: "Known tag-to-sensor distance in metres"
        }
      },
      required: [:reference_distance]
    })
  end

  defmodule TagOccupancy do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "TagOccupancy", type: :object,
      properties: %{
        id:      %Schema{type: :integer},
        tag_id:  %Schema{type: :string},
        name:    %Schema{type: :string},
        room_id: %Schema{type: :integer, nullable: true}
      },
      required: [:id, :tag_id, :name, :room_id]
    })
  end

  defmodule TagParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "TagParams", type: :object,
      properties: %{
        tag_id: %Schema{type: :string, description: "BLE MAC address or device ID"},
        name:   %Schema{type: :string},
        color:  %Schema{type: :string}
      },
      required: [:tag_id, :name]
    })
  end

  defmodule TagUpdateParams do
    require OpenApiSpex
    OpenApiSpex.schema(%{
      title: "TagUpdateParams", type: :object,
      properties: %{
        name:  %Schema{type: :string},
        color: %Schema{type: :string}
      }
    })
  end
end