import {
    BNF_LANGUAGE,
    JAVASCRIPT_LANGUAGE,
    JSON_LANGUAGE,
    MARKDOWN_LANGUAGE,
    MERMAID_LANGUAGE,
    PAG_LANGUAGE,
    TYPESCRIPT_LANGUAGE,
    YAML_LANGUAGE,
} from "#configuration/constants/code.constants";

export const SYNTAX_CLASS_PREFIX = "syntax-";

export const CODE_LINE_CLASS = "code-line";

export const CODE_LINE_ATTRIBUTE = "data-line";

export const CODE_LINE_MARKED_CLASS = "marked";

export const LETTERS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_$";

export const DIGITS = "0123456789";

export const WORD_CHARS = `${LETTERS + DIGITS}-`;

export const QUOTES = "\"'`";

export const ESCAPE = "\\";

export const LINE_BREAK = "\n";

export const ANGLE_OPEN = "<";

export const ANGLE_CLOSE = ">";

const DOUBLE_SLASH = "//";

export const HASH = "#";

const DOUBLE_PERCENT = "%%";

const SCRIPT_KEYWORDS = [
    "as",
    "async",
    "await",
    "break",
    "case",
    "catch",
    "class",
    "const",
    "continue",
    "default",
    "delete",
    "do",
    "else",
    "enum",
    "export",
    "extends",
    "false",
    "finally",
    "for",
    "from",
    "function",
    "if",
    "implements",
    "import",
    "in",
    "instanceof",
    "interface",
    "let",
    "new",
    "null",
    "of",
    "readonly",
    "return",
    "satisfies",
    "static",
    "super",
    "switch",
    "this",
    "throw",
    "true",
    "try",
    "type",
    "typeof",
    "undefined",
    "var",
    "void",
    "while",
    "yield",
];

const MERMAID_KEYWORDS = [
    "flowchart",
    "graph",
    "subgraph",
    "end",
    "direction",
    "TB",
    "LR",
    "RL",
    "BT",
    "classDef",
    "class",
    "style",
];

const JSON_KEYWORDS = ["true", "false", "null"];

export const KEYWORDS_BY_LANGUAGE: ReadonlyMap<string, ReadonlySet<string>> = new Map([
    [TYPESCRIPT_LANGUAGE, new Set(SCRIPT_KEYWORDS)],
    [JAVASCRIPT_LANGUAGE, new Set(SCRIPT_KEYWORDS)],
    [MERMAID_LANGUAGE, new Set(MERMAID_KEYWORDS)],
    [JSON_LANGUAGE, new Set(JSON_KEYWORDS)],
    [YAML_LANGUAGE, new Set(JSON_KEYWORDS)],
]);

export const LINE_COMMENT_BY_LANGUAGE: ReadonlyMap<string, string> = new Map([
    [TYPESCRIPT_LANGUAGE, DOUBLE_SLASH],
    [JAVASCRIPT_LANGUAGE, DOUBLE_SLASH],
    [YAML_LANGUAGE, HASH],
    [MERMAID_LANGUAGE, DOUBLE_PERCENT],
]);

export const HEADING_LANGUAGES: ReadonlySet<string> = new Set([MARKDOWN_LANGUAGE, PAG_LANGUAGE]);

export const NONTERMINAL_LANGUAGES: ReadonlySet<string> = new Set([BNF_LANGUAGE, PAG_LANGUAGE]);

export const SHOUT_LANGUAGES: ReadonlySet<string> = new Set([PAG_LANGUAGE, BNF_LANGUAGE, MERMAID_LANGUAGE]);