/**
 * @fileoverview Rule to prevent duplicate definitions in Markdown.
 * @author 루밀LuMir(lumirlumir)
 */
//-----------------------------------------------------------------------------
// Imports
//-----------------------------------------------------------------------------
import { normalizeIdentifier } from "micromark-util-normalize-identifier";
//-----------------------------------------------------------------------------
// Type Definitions
//-----------------------------------------------------------------------------
/**
 * @import { Definition, FootnoteDefinition } from "mdast";
 * @import { MarkdownRuleDefinition } from "../types.js";
 * @typedef {"duplicateDefinition" | "duplicateFootnoteDefinition"} NoDuplicateDefinitionsMessageIds
 * @typedef {[{ allowDefinitions?: string[], allowFootnoteDefinitions?: string[], checkFootnoteDefinitions?: boolean }]} NoDuplicateDefinitionsOptions
 * @typedef {MarkdownRuleDefinition<{ RuleOptions: NoDuplicateDefinitionsOptions, MessageIds: NoDuplicateDefinitionsMessageIds }>} NoDuplicateDefinitionsRuleDefinition
 */
//-----------------------------------------------------------------------------
// Rule Definition
//-----------------------------------------------------------------------------
export default /** @satisfies {NoDuplicateDefinitionsRuleDefinition} */ ({
    meta: {
        type: "problem",
        docs: {
            recommended: true,
            description: "Disallow duplicate definitions",
            url: "https://github.com/eslint/markdown/blob/main/docs/rules/no-duplicate-definitions.md",
        },
        messages: {
            duplicateDefinition: "Unexpected duplicate definition `{{ identifier }}` (label: `{{ label }}`) found. First defined at line {{ firstLine }} (label: `{{ firstLabel }}`).",
            duplicateFootnoteDefinition: "Unexpected duplicate footnote definition `{{ identifier }}` (label: `{{ label }}`) found. First defined at line {{ firstLine }} (label: `{{ firstLabel }}`).",
        },
        schema: [
            {
                type: "object",
                properties: {
                    allowDefinitions: {
                        type: "array",
                        items: {
                            type: "string",
                        },
                        uniqueItems: true,
                    },
                    allowFootnoteDefinitions: {
                        type: "array",
                        items: {
                            type: "string",
                        },
                        uniqueItems: true,
                    },
                    checkFootnoteDefinitions: {
                        type: "boolean",
                    },
                },
                additionalProperties: false,
            },
        ],
        defaultOptions: [
            {
                allowDefinitions: ["//"],
                allowFootnoteDefinitions: [],
                checkFootnoteDefinitions: true,
            },
        ],
    },
    create(context) {
        const allowDefinitions = new Set(context.options[0].allowDefinitions.map(identifier => normalizeIdentifier(identifier).toLowerCase()));
        const allowFootnoteDefinitions = new Set(context.options[0].allowFootnoteDefinitions.map(identifier => normalizeIdentifier(identifier).toLowerCase()));
        const [{ checkFootnoteDefinitions }] = context.options;
        /** @type {Map<string, Definition>} */
        const definitions = new Map();
        /** @type {Map<string, FootnoteDefinition>} */
        const footnoteDefinitions = new Map();
        return {
            definition(node) {
                if (allowDefinitions.has(node.identifier)) {
                    return;
                }
                if (definitions.has(node.identifier)) {
                    const firstDefinitionNode = definitions.get(node.identifier);
                    context.report({
                        node,
                        messageId: "duplicateDefinition",
                        data: {
                            identifier: node.identifier,
                            label: node.label.trim(),
                            firstLine: firstDefinitionNode.position.start.line,
                            firstLabel: firstDefinitionNode.label.trim(),
                        },
                    });
                }
                else {
                    definitions.set(node.identifier, node);
                }
            },
            footnoteDefinition(node) {
                if (!checkFootnoteDefinitions ||
                    allowFootnoteDefinitions.has(node.identifier)) {
                    return;
                }
                if (footnoteDefinitions.has(node.identifier)) {
                    const firstFootnoteDefinitionNode = footnoteDefinitions.get(node.identifier);
                    context.report({
                        node,
                        messageId: "duplicateFootnoteDefinition",
                        data: {
                            identifier: node.identifier,
                            label: node.label,
                            firstLine: firstFootnoteDefinitionNode.position.start.line,
                            firstLabel: firstFootnoteDefinitionNode.label,
                        },
                    });
                }
                else {
                    footnoteDefinitions.set(node.identifier, node);
                }
            },
        };
    },
});
