/**
 * @author Toru Nagashima
 * See LICENSE file in root directory for full license.
 */
"use strict"

const path = require("path")
const getConvertPath = require("../util/get-convert-path")
const getNpmignore = require("../util/get-npmignore")
const getPackageJson = require("../util/get-package-json")

/**
 * Checks whether or not a given path is a `bin` file.
 *
 * @param {string} filePath - A file path to check.
 * @param {string|object|undefined} binField - A value of the `bin` field of `package.json`.
 * @param {string} basedir - A directory path that `package.json` exists.
 * @returns {boolean} `true` if the file is a `bin` file.
 */
function isBinFile(filePath, binField, basedir) {
    if (!binField) {
        return false
    }
    if (typeof binField === "string") {
        return filePath === path.resolve(basedir, binField)
    }
    return Object.keys(binField).some(
        key => filePath === path.resolve(basedir, binField[key])
    )
}

module.exports = {
    meta: {
        docs: {
            description: "disallow `bin` files that npm ignores",
            category: "Possible Errors",
            recommended: true,
            url: "https://github.com/weiran-zsd/eslint-plugin-node/blob/HEAD/docs/rules/no-unpublished-bin.md",
        },
        type: "problem",
        fixable: null,
        schema: [
            {
                type: "object",
                properties: {
                    //
                    convertPath: getConvertPath.schema,
                },
            },
        ],
    },
    create(context) {
        return {
            Program(node) {
                // Check file path.
                let rawFilePath = context.getFilename()
                if (rawFilePath === "<input>") {
                    return
                }
                rawFilePath = path.resolve(rawFilePath)

                // Find package.json
                const p = getPackageJson(rawFilePath)
                if (!p) {
                    return
                }

                // Convert by convertPath option
                const basedir = path.dirname(p.filePath)
                const relativePath = getConvertPath(context)(
                    path.relative(basedir, rawFilePath).replace(/\\/gu, "/")
                )
                const filePath = path.join(basedir, relativePath)

                // Check this file is bin.
                if (!isBinFile(filePath, p.bin, basedir)) {
                    return
                }

                // Check ignored or not
                const npmignore = getNpmignore(filePath)
                if (!npmignore.match(relativePath)) {
                    return
                }

                // Report.
                context.report({
                    node,
                    message:
                        "npm ignores '{{name}}'. Check 'files' field of 'package.json' or '.npmignore'.",
                    data: { name: relativePath },
                })
            },
        }
    },
}