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-- Copyright 2026 Shota FUJI
--
-- This Source Code Form is subject to the terms of the Mozilla Public
-- License, v. 2.0. If a copy of the MPL was not distributed with this
-- file, You can obtain one at https://mozilla.org/MPL/2.0/.
--
-- SPDX-License-Identifier: MPL-2.0


module Parameters.Constraints exposing (..)

import Length exposing (Length, mm)
import Parameters


type alias NumberConstraints a =
    { min : Maybe a
    , max : Maybe a
    }


type alias FixedLoop =
    { width : NumberConstraints Length
    , length : NumberConstraints Length
    }


type alias FreeLoop =
    { width : NumberConstraints Length
    , length : NumberConstraints Length
    , overlap : NumberConstraints Length
    }


type alias Loops =
    { fixed : FixedLoop
    , free : FreeLoop
    }


type alias ShortPiece =
    { loops : Loops
    , length : NumberConstraints Length
    }


type alias BuckleHole =
    { adjustments : NumberConstraints Int
    , diameter : NumberConstraints Length
    , interval : NumberConstraints Length
    , distance : NumberConstraints Length
    }


type alias LongPiece =
    { buckleHole : BuckleHole
    , length : NumberConstraints Length
    }


type alias Rendering =
    { margin : NumberConstraints Length
    , lineWidth : NumberConstraints Length
    }


type alias Parameters =
    { shoulderWidth : NumberConstraints Length
    , longPiece : LongPiece
    , shortPiece : ShortPiece
    , taperTo : NumberConstraints Length
    , rendering : Rendering
    }


constraints : Parameters
constraints =
    { shoulderWidth = { min = Just (mm 10), max = Just (mm 30) }
    , longPiece =
        { buckleHole =
            { adjustments = { min = Just 0, max = Just 4 }
            , diameter = { min = Just (mm 1), max = Just (mm 10) }
            , interval = { min = Just (mm 1), max = Just (mm 10) }
            , distance = { min = Just (mm 1), max = Just (mm 130) }
            }
        , length = { min = Just (mm 5), max = Just (mm 150) }
        }
    , shortPiece =
        { loops =
            { fixed =
                { width = { min = Just (mm 1), max = Just (mm 15) }
                , length = { min = Just (mm 10), max = Just (mm 100) }
                }
            , free =
                { width = { min = Just (mm 1), max = Just (mm 15) }
                , length = { min = Just (mm 10), max = Just (mm 100) }
                , overlap = { min = Just (mm 0), max = Just (mm 10) }
                }
            }
        , length = { min = Just (mm 5), max = Just (mm 150) }
        }
    , taperTo = { min = Just (mm 5), max = Just (mm 28) }
    , rendering =
        { margin = { min = Just (mm 0), max = Just (mm 20) }
        , lineWidth = { min = Just (mm 0.1), max = Just (mm 1) }
        }
    }