import { COMMENTS_IGNORE_PATTERN, WHITE_SPACES_PATTERN, ast_exports, createRule, isHashbangComment, isSingleLine, isWhiteSpaces } from "../utils.js";
var multiline_comment_style_default = createRule({
	name: "multiline-comment-style",
	meta: {
		type: "suggestion",
		docs: { description: "Enforce a particular style for multiline comments" },
		fixable: "whitespace",
		schema: { anyOf: [{
			type: "array",
			items: [{
				enum: ["starred-block", "bare-block"],
				type: "string"
			}],
			additionalItems: false
		}, {
			type: "array",
			items: [{
				enum: ["separate-lines"],
				type: "string"
			}, {
				type: "object",
				properties: {
					checkJSDoc: { type: "boolean" },
					checkExclamation: { type: "boolean" }
				},
				additionalProperties: false
			}],
			additionalItems: false
		}] },
		messages: {
			expectedBlock: "Expected a block comment instead of consecutive line comments.",
			expectedBareBlock: "Expected a block comment without padding stars.",
			startNewline: "Expected a linebreak after '/*'.",
			endNewline: "Expected a linebreak before '*/'.",
			missingStar: "Expected a '*' at the start of this line.",
			alignment: "Expected this line to be aligned with the start of the comment.",
			expectedLines: "Expected multiple line comments instead of a block comment."
		}
	},
	create(context) {
		const sourceCode = context.sourceCode;
		const option = context.options[0] || "starred-block";
		const params = context.options[1] || {};
		const checkJSDoc = !!params.checkJSDoc;
		const checkExclamation = !!params.checkExclamation;
		function isStarredCommentLine(line) {
			return /^\s*\*/u.test(line);
		}
		function isStarredBlockComment([firstComment]) {
			if (firstComment.type !== "Block") return false;
			const lines = firstComment.value.split(ast_exports.LINEBREAK_MATCHER);
			return lines.length > 0 && lines.every((line, i) => i === 0 || i === lines.length - 1 ? isWhiteSpaces(line) : isStarredCommentLine(line));
		}
		function isJSDocComment([firstComment]) {
			if (firstComment.type !== "Block") return false;
			const lines = firstComment.value.split(ast_exports.LINEBREAK_MATCHER);
			return /^\*\s*$/u.test(lines[0]) && lines.slice(1, -1).every((line) => /^\s* /u.test(line)) && isWhiteSpaces(lines.at(-1));
		}
		function isExclamationComment([firstComment]) {
			if (firstComment.type !== "Block") return false;
			const lines = firstComment.value.split(ast_exports.LINEBREAK_MATCHER);
			return /^!\s*$/u.test(lines[0]) && lines.slice(1, -1).every((line) => /^\s* /u.test(line)) && isWhiteSpaces(lines.at(-1));
		}
		function processSeparateLineComments(commentGroup) {
			const allLinesHaveLeadingSpace = commentGroup.every(({ value: line }) => line.trim().length === 0 || line.startsWith(" "));
			return commentGroup.map(({ value }) => allLinesHaveLeadingSpace ? value.replace(/^ /u, "") : value);
		}
		function processStarredBlockComment(comment) {
			const lines = comment.value.split(ast_exports.LINEBREAK_MATCHER).slice(1, -1).map((line) => line.replace(WHITE_SPACES_PATTERN, ""));
			const allLinesHaveLeadingSpace = lines.every((line) => {
				const lineWithoutPrefix = line.replace(/\s*\*/u, "");
				return lineWithoutPrefix.trim().length === 0 || lineWithoutPrefix.startsWith(" ");
			});
			return lines.map((line) => line.replace(allLinesHaveLeadingSpace ? /\s*\* ?/u : /\s*\*/u, ""));
		}
		function processBareBlockComment(comment) {
			const lines = comment.value.split(ast_exports.LINEBREAK_MATCHER).map((line) => line.replace(WHITE_SPACES_PATTERN, ""));
			const leadingWhitespace = `${sourceCode.text.slice(comment.range[0] - comment.loc.start.column, comment.range[0])}   `;
			let offset = "";
			for (const [i, line] of lines.entries()) {
				if (!line.trim().length || i === 0) continue;
				const [, lineOffset] = line.match(/^(\s*\*?\s*)/u);
				if (lineOffset.length < leadingWhitespace.length) {
					const newOffset = leadingWhitespace.slice(lineOffset.length - leadingWhitespace.length);
					if (newOffset.length > offset.length) offset = newOffset;
				}
			}
			return lines.map((line) => {
				const match = line.match(/^(\s*\*?\s*)(.*)/u);
				const [, lineOffset, lineContents] = match;
				if (lineOffset.length > leadingWhitespace.length) return `${lineOffset.slice(leadingWhitespace.length - (offset.length + lineOffset.length))}${lineContents}`;
				if (lineOffset.length < leadingWhitespace.length) return `${lineOffset.slice(leadingWhitespace.length)}${lineContents}`;
				return lineContents;
			});
		}
		function getCommentLines(commentGroup) {
			const [firstComment] = commentGroup;
			if (firstComment.type === "Line") return processSeparateLineComments(commentGroup);
			if (isStarredBlockComment(commentGroup)) return processStarredBlockComment(firstComment);
			return processBareBlockComment(firstComment);
		}
		function getInitialOffset(comment) {
			return sourceCode.text.slice(comment.range[0] - comment.loc.start.column, comment.range[0]);
		}
		function convertToStarredBlock(firstComment, commentLinesList) {
			const initialOffset = getInitialOffset(firstComment);
			return `/*\n${commentLinesList.map((line) => `${initialOffset} * ${line}`).join("\n")}\n${initialOffset} */`;
		}
		function convertToSeparateLines(firstComment, commentLinesList) {
			return commentLinesList.map((line) => `// ${line}`).join(`\n${getInitialOffset(firstComment)}`);
		}
		function convertToBlock(firstComment, commentLinesList) {
			return `/* ${commentLinesList.join(`\n${getInitialOffset(firstComment)}   `)} */`;
		}
		const commentGroupCheckers = {
			"starred-block": function(commentGroup) {
				const [firstComment] = commentGroup;
				const commentLines = getCommentLines(commentGroup);
				if (commentLines.some((value) => value.includes("*/"))) return;
				if (commentGroup.length > 1) context.report({
					loc: {
						start: firstComment.loc.start,
						end: commentGroup.at(-1).loc.end
					},
					messageId: "expectedBlock",
					fix(fixer) {
						const range = [firstComment.range[0], commentGroup.at(-1).range[1]];
						return commentLines.some((value) => value.startsWith("/")) ? null : fixer.replaceTextRange(range, convertToStarredBlock(firstComment, commentLines));
					}
				});
				else {
					const lines = firstComment.value.split(ast_exports.LINEBREAK_MATCHER);
					const expectedLeadingWhitespace = getInitialOffset(firstComment);
					const expectedLinePrefix = `${expectedLeadingWhitespace} *`;
					if (!/^[*!]?\s*$/u.test(lines[0])) {
						const start = /^[*!]/.test(firstComment.value) ? firstComment.range[0] + 1 : firstComment.range[0];
						context.report({
							loc: {
								start: firstComment.loc.start,
								end: {
									line: firstComment.loc.start.line,
									column: firstComment.loc.start.column + 2
								}
							},
							messageId: "startNewline",
							fix: (fixer) => fixer.insertTextAfterRange([start, start + 2], `\n${expectedLinePrefix}`)
						});
					}
					if (!isWhiteSpaces(lines.at(-1))) context.report({
						loc: {
							start: {
								line: firstComment.loc.end.line,
								column: firstComment.loc.end.column - 2
							},
							end: firstComment.loc.end
						},
						messageId: "endNewline",
						fix: (fixer) => fixer.replaceTextRange([firstComment.range[1] - 2, firstComment.range[1]], `\n${expectedLinePrefix}/`)
					});
					for (let lineNumber = firstComment.loc.start.line + 1; lineNumber <= firstComment.loc.end.line; lineNumber++) {
						const lineText = sourceCode.lines[lineNumber - 1];
						const errorType = isStarredCommentLine(lineText) ? "alignment" : "missingStar";
						if (!lineText.startsWith(expectedLinePrefix)) context.report({
							loc: {
								start: {
									line: lineNumber,
									column: 0
								},
								end: {
									line: lineNumber,
									column: lineText.length
								}
							},
							messageId: errorType,
							fix(fixer) {
								const lineStartIndex = sourceCode.getIndexFromLoc({
									line: lineNumber,
									column: 0
								});
								if (errorType === "alignment") {
									const [, commentTextPrefix$1 = ""] = lineText.match(/^(\s*\*)/u) || [];
									const commentTextStartIndex$1 = lineStartIndex + commentTextPrefix$1.length;
									return fixer.replaceTextRange([lineStartIndex, commentTextStartIndex$1], expectedLinePrefix);
								}
								const [, commentTextPrefix = ""] = lineText.match(/^(\s*)/u) || [];
								const commentTextStartIndex = lineStartIndex + commentTextPrefix.length;
								let offset;
								for (const [idx, line] of lines.entries()) {
									if (!/\S+/u.test(line)) continue;
									const lineTextToAlignWith = sourceCode.lines[firstComment.loc.start.line - 1 + idx];
									const [, prefix = "", initialOffset = ""] = lineTextToAlignWith.match(/^(\s*(?:\/?\*)?(\s*))/u) || [];
									offset = `${commentTextPrefix.slice(prefix.length)}${initialOffset}`;
									if (/^\s*\//u.test(lineText) && offset.length === 0) offset += " ";
									break;
								}
								return fixer.replaceTextRange([lineStartIndex, commentTextStartIndex], `${expectedLinePrefix}${offset}`);
							}
						});
					}
				}
			},
			"separate-lines": function(commentGroup) {
				const [firstComment] = commentGroup;
				const isJSDoc = isJSDocComment(commentGroup);
				const isExclamation = isExclamationComment(commentGroup);
				if (firstComment.type !== "Block" || !checkJSDoc && isJSDoc || !checkExclamation && isExclamation) return;
				let commentLines = getCommentLines(commentGroup);
				if (isJSDoc || isExclamation) commentLines = commentLines.slice(1, commentLines.length - 1);
				const tokenAfter = sourceCode.getTokenAfter(firstComment, { includeComments: true });
				if (tokenAfter && (0, ast_exports.isTokenOnSameLine)(firstComment, tokenAfter)) return;
				context.report({
					loc: {
						start: firstComment.loc.start,
						end: {
							line: firstComment.loc.start.line,
							column: firstComment.loc.start.column + 2
						}
					},
					messageId: "expectedLines",
					fix(fixer) {
						return fixer.replaceText(firstComment, convertToSeparateLines(firstComment, commentLines));
					}
				});
			},
			"bare-block": function(commentGroup) {
				if (isJSDocComment(commentGroup) || isExclamationComment(commentGroup)) return;
				const [firstComment] = commentGroup;
				const commentLines = getCommentLines(commentGroup);
				if (firstComment.type === "Line" && commentLines.length > 1 && !commentLines.some((value) => value.includes("*/"))) context.report({
					loc: {
						start: firstComment.loc.start,
						end: commentGroup.at(-1).loc.end
					},
					messageId: "expectedBlock",
					fix(fixer) {
						return fixer.replaceTextRange([firstComment.range[0], commentGroup.at(-1).range[1]], convertToBlock(firstComment, commentLines));
					}
				});
				if (isStarredBlockComment(commentGroup)) context.report({
					loc: {
						start: firstComment.loc.start,
						end: {
							line: firstComment.loc.start.line,
							column: firstComment.loc.start.column + 2
						}
					},
					messageId: "expectedBareBlock",
					fix(fixer) {
						return fixer.replaceText(firstComment, convertToBlock(firstComment, commentLines));
					}
				});
			}
		};
		return { Program() {
			return sourceCode.getAllComments().filter((comment) => {
				if (isHashbangComment(comment) || COMMENTS_IGNORE_PATTERN.test(comment.value)) return false;
				const tokenBefore = sourceCode.getTokenBefore(comment, { includeComments: true });
				return !tokenBefore || tokenBefore.loc.end.line < comment.loc.start.line;
			}).reduce((commentGroups, comment, index, commentList) => {
				const tokenBefore = sourceCode.getTokenBefore(comment, { includeComments: true });
				if (comment.type === "Line" && index && commentList[index - 1].type === "Line" && tokenBefore && tokenBefore.loc.end.line === comment.loc.start.line - 1 && tokenBefore === commentList[index - 1]) commentGroups.at(-1).push(comment);
				else commentGroups.push([comment]);
				return commentGroups;
			}, []).forEach((commentGroup) => {
				if (commentGroup.length === 1 && isSingleLine(commentGroup[0])) return;
				const check = commentGroupCheckers[option];
				check(commentGroup);
			});
		} };
	}
});
export { multiline_comment_style_default };
