package com.horcrux.svg;

import java.util.HashMap;
import java.util.Map;

import javax.annotation.Nonnull;

class TextProperties {

    /*
            https://drafts.csswg.org/css-inline/#propdef-alignment-baseline
            2.2.1. Alignment Point: alignment-baseline longhand

            Name:	alignment-baseline
            Value:	baseline | text-bottom | alphabetic | ideographic | middle | central | mathematical | text-top | bottom | center | top
            Initial:	baseline
            Applies to:	inline-level boxes, flex items, grid items, table cells
            Inherited:	no
            Percentages:	N/A
            Media:	visual
            Computed value:	as specified
            Canonical order:	per grammar
            Animation type:	discrete
        */
    enum AlignmentBaseline {
        baseline("baseline"),
        textBottom("text-bottom"),
        alphabetic("alphabetic"),
        ideographic("ideographic"),
        middle("middle"),
        central("central"),
        mathematical("mathematical"),
        textTop("text-top"),
        bottom("bottom"),
        center("center"),
        top("top"),
        /*
            SVG implementations may support the following aliases in order to support legacy content:

            text-before-edge = text-top
            text-after-edge = text-bottom
        */
        textBeforeEdge("text-before-edge"),
        textAfterEdge("text-after-edge"),
        // SVG 1.1
        beforeEdge("before-edge"),
        afterEdge("after-edge"),
        hanging("hanging"),
        ;

        private final String alignment;

        AlignmentBaseline(String alignment) {
            this.alignment = alignment;
        }

        static AlignmentBaseline getEnum(String strVal) {
            if (!alignmentToEnum.containsKey(strVal)) {
                throw new IllegalArgumentException("Unknown String Value: " + strVal);
            }
            return alignmentToEnum.get(strVal);
        }

        private static final Map<String, AlignmentBaseline> alignmentToEnum = new HashMap<>();

        static {
            for (final AlignmentBaseline en : AlignmentBaseline.values()) {
                alignmentToEnum.put(en.alignment, en);
            }
        }

        @Nonnull
        @Override
        public String toString() {
            return alignment;
        }
    }

    // TODO implement rtl
    @SuppressWarnings("unused")
    enum Direction {
        ltr,
        rtl
    }

    enum FontVariantLigatures {
        normal,
        @SuppressWarnings("unused")none
    }

    enum FontStyle {
        normal,
        italic,
        @SuppressWarnings("unused")oblique
    }

    enum FontWeight {
        // Absolute
        Normal ("normal"),
        Bold ("bold"),
        w100 ("100"),
        w200 ("200"),
        w300 ("300"),
        w400 ("400"),
        w500 ("500"),
        w600 ("600"),
        w700 ("700"),
        w800 ("800"),
        w900 ("900"),
        // Relative
        Bolder ("bolder"),
        Lighter ("lighter");

        private final String weight;
        FontWeight(String weight) {
            this.weight = weight;
        }

        static boolean hasEnum(String strVal) {
            return weightToEnum.containsKey(strVal);
        }

        static FontWeight get(String strVal) {
            return weightToEnum.get(strVal);
        }

        private static final Map<String, FontWeight> weightToEnum = new HashMap<>();
        static {
            for (final FontWeight en : FontWeight.values()) {
                weightToEnum.put(en.weight, en);
            }
        }

        @Nonnull
        @Override
        public String toString() {
            return weight;
        }
    }

    enum TextAnchor
    {
        start,
        middle,
        end
    }

    enum TextDecoration
    {
        None("none"),
        Underline("underline"),
        Overline("overline"),
        LineThrough("line-through"),
        Blink("blink");

        private final String decoration;
        TextDecoration(String decoration) {
            this.decoration = decoration;
        }

        static TextDecoration getEnum(String strVal) {
            if(!decorationToEnum.containsKey(strVal)) {
                throw new IllegalArgumentException("Unknown String Value: " + strVal);
            }
            return decorationToEnum.get(strVal);
        }

        private static final Map<String, TextDecoration> decorationToEnum = new HashMap<>();
        static {
            for (final TextDecoration en : TextDecoration.values()) {
                decorationToEnum.put(en.decoration, en);
            }
        }

        @Nonnull
        @Override
        public String toString() {
            return decoration;
        }
    }

    enum TextLengthAdjust
    {
        spacing,
        spacingAndGlyphs
    }

    enum TextPathMethod {
        align,
        @SuppressWarnings("unused")stretch
    }

    /*
            TODO suggest adding a compatibility mid-line rendering attribute to textPath,
            for a chrome/firefox/opera/safari compatible sharp text path rendering,
            which doesn't bend text smoothly along a right angle curve, (like Edge does)
            but keeps the mid-line orthogonal to the mid-point tangent at all times instead.
        */
    enum TextPathMidLine {
        sharp,
        @SuppressWarnings("unused")smooth
    }

    enum TextPathSide {
        @SuppressWarnings("unused")left,
        right
    }

    enum TextPathSpacing {
        @SuppressWarnings("unused")auto,
        exact
    }
}