1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25
26. 26
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39
40. 40
41. 41
42. 42
43. 43
44. 44
45. 45
46. 46
47. 47
48. 48
49. 49
50. 50
51. 51
52. 52
53. 53
54. 54
55. 55
56. 56
57. 57
58. 58
59. 59
60. 60
61. 61
62. 62
63. 63
64. 64
65. 65
66. 66
67. 67
68. 68
69. 69
70. 70
71. 71
72. 72
73. 73
74. 74
75. 75
76. 76
77. 77
78. 78
79. 79
80. 80
81. 81
82. 82
83. 83
84. 84
85. 85
86. 86
87. 87
88. 88
89. 89
90. 90
91. 91
92. 92
93. 93
94. 94
95. 95
96. 96
97. 97
98. 98
99. 99
100. 100
101. 101
102. 102
103. 103
104. 104
105. 105
106. 106
107. 107
108. 108
109. 109
110. 110
111. 111
112. 112
113. 113
114. 114
115. 115
116. 116
117. 117
118. 118
119. 119
120. 120
121. 121
122. 122
123. 123
124. 124
125. 125
126. 126
127. 127
128. 128
129. 129
130. 130
131. 131
132. 132
133. 133
134. 134
135. 135
136. 136
137. 137
138. 138
139. 139
140. 140
141. 141
142. 142
143. 143
144. 144
145. 145
146. 146
147. 147
148. 148
149. 149
150. 150
151. 151
152. 152
153. 153
154. 154
155. 155
156. 156
157. 157
158. 158
159. 159
160. 160
161. 161
162. 162
163. 163
164. 164
165. 165
166. 166
167. 167
168. 168
169. 169

-- 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 Template exposing (template)

import Length exposing (toMM)
import Parameters exposing (Parameters, canvasSizeDimension)
import String
import Svg exposing (..)
import Svg.Attributes exposing (..)
import Svg.Path exposing (LargeArcFlag(..), PathCommand(..), PointMode(..), SweepFlag(..))


type Anchor
    = TopLeft ( Int, Int )
    | TopRight ( Int, Int )
    | BottomLeft ( Int, Int )
    | BottomRight ( Int, Int )


topLeftFor : Anchor -> ( Int, Int ) -> ( Int, Int )
topLeftFor anchor ( width, height ) =
    case anchor of
        TopLeft ( x, y ) ->
            ( x, y )

        TopRight ( x, y ) ->
            ( x - width, y )

        BottomLeft ( x, y ) ->
            ( x, y - height )

        BottomRight ( x, y ) ->
            ( x - width, y - height )


template : Parameters -> List (Svg.Attribute msg) -> Svg.Svg msg
template params attrs =
    let
        ( canvasWidth, canvasHeight ) =
            canvasSizeDimension params.canvasSize
                |> Tuple.mapBoth toMM toMM
                |> Tuple.mapBoth ceiling ceiling
    in
    svg
        (viewBox (String.join " " [ "0", "0", String.fromInt canvasWidth, String.fromInt canvasHeight ])
            :: class "print"
            :: attrs
        )
        -- TODO: Make margin configurable
        [ scaleChecker (BottomLeft ( 10, canvasHeight - 10 ))
        , longPiece params (TopLeft ( 10, 10 ))
        , shortPiece params (TopLeft ( ceiling (toMM params.lugWidth) + 20, 10 ))
        ]


scaleChecker : Anchor -> Svg msg
scaleChecker anchor =
    let
        ( ox, oy ) =
            topLeftFor anchor ( 10, 10 )

        px : Int -> String
        px n =
            String.fromInt (ox + n)

        py : Int -> String
        py n =
            String.fromInt (oy + n)
    in
    g
        []
        [ g
            [ stroke "currentColor", strokeWidth "0.2" ]
            [ line
                [ x1 (px 0), y1 (py 8), x2 (px 0), y2 (py 10) ]
                []
            , line
                [ x1 (px 0), y1 (py 9), x2 (px 10), y2 (py 9) ]
                []
            , line
                [ x1 (px 10), y1 (py 8), x2 (px 10), y2 (py 10) ]
                []
            ]
        , text_
            [ x (px 5)
            , y (py 7)
            , fontSize "3"
            , fontWeight "100"
            , textAnchor "middle"
            , fill "currentColor"
            ]
            [ text "10mm" ]
        ]


longPiece : Parameters -> Anchor -> Svg msg
longPiece params anchor =
    let
        lugWidth =
            toMM params.lugWidth

        length =
            toMM params.longPiece.length

        ( ox, oy ) =
            topLeftFor anchor ( ceiling lugWidth, ceiling length )
    in
    g
        []
        [ g
            [ fill "none", stroke "currentColor", strokeWidth "0.3" ]
            [ Svg.path
                [ Svg.Path.d
                    [ MoveTo Absolute ( toFloat ox, toFloat oy )
                    , VerticalLineTo Relative (length - lugWidth)
                    , EllipticalArcCurve Relative
                        { rx = lugWidth / 2
                        , ry = lugWidth / 2
                        , angle = 0.0
                        , largeArcFlag = LargeArc
                        , sweepFlag = Counterclockwise
                        , x = lugWidth
                        , y = 0
                        }
                        []
                    , VerticalLineTo Relative -(length - lugWidth)
                    , ClosePath
                    ]
                ]
                []
            ]
        ]


shortPiece : Parameters -> Anchor -> Svg msg
shortPiece params anchor =
    let
        lugWidth =
            toMM params.lugWidth

        length =
            toMM params.shortPiece.length

        ( ox, oy ) =
            topLeftFor anchor ( ceiling lugWidth, ceiling length )
    in
    g
        []
        [ g
            [ fill "none", stroke "currentColor", strokeWidth "0.3" ]
            [ Svg.path
                [ Svg.Path.d
                    [ MoveTo Absolute ( toFloat ox, toFloat oy )
                    , VerticalLineTo Relative length
                    , HorizontalLineTo Relative lugWidth
                    , VerticalLineTo Relative -length
                    , ClosePath
                    ]
                ]
                []
            ]
        ]