dotfiles/.config/nvim/lua/plugins/linting.lua

return {
    "mfussenegger/nvim-lint",
    event = { "BufReadPre", "BufNewFile" },
    config = function()
        local lint = require("lint")

        local severities = {
            ERROR = vim.diagnostic.severity.ERROR,
            WARNING = vim.diagnostic.severity.WARN,
        }

        lint.linters.phpcs = {
            name = 'phpcs',
            cmd = 'phpcs',
            stdin = true,
            args = {
                '-q',
                '--report=json',
                '--standard=~/.config/phpcs.xml',
                '-', -- need `-` at the end for stdin support
            },
            ignore_exitcode = true,
            parser = function(output, _)
                if vim.trim(output) == '' or output == nil then
                    return {}
                end

                if not vim.startswith(output, '{') then
                    vim.notify(output)
                    return {}
                end

                local decoded = vim.json.decode(output)
                local diagnostics = {}
                local messages = decoded['files']['STDIN']['messages']

                for _, msg in ipairs(messages or {}) do
                    table.insert(diagnostics, {
                        lnum = msg.line - 1,
                        end_lnum = msg.line - 1,
                        col = msg.column - 1,
                        end_col = msg.column - 1,
                        message = msg.message,
                        code = msg.source,
                        source = 'phpcs',
                        severity = assert(severities[msg.type], 'missing mapping for severity ' .. msg.type),
                    })
                end

                return diagnostics
            end
        }

        lint.linters_by_ft = {
            javascript = { "eslint" },
            typescript = { "eslint" },
            vue = { "eslint" },
            json = { "jsonlint" },
            markdown = { "markdownlint" },
            php = { "phpcs" },
            golang = { "gospell", "golangci-lint" },
            python = { "pylint" },
            dockerfile = { "hadolint" },
            blade = { "phpcs" },
        }

        local lint_augroup = vim.api.nvim_create_augroup("lint", {
            clear = true,
        })

        vim.api.nvim_create_autocmd({
            "BufEnter",
            "BufWritePost",
            "InsertLeave",
        }, {
            group = lint_augroup,
            callback = function()
                lint.try_lint()
            end,
        })

        vim.keymap.set("n", "<leader>ll", function()
            lint.try_lint()
        end)
    end,
}