local nvim_lsp = require("lspconfig")
--
-- https://vonheikemen.github.io/devlog/tools/setup-nvim-lspconfig-plus-nvim-cmp/
local lsp_defaults = nvim_lsp.util.default_config
lsp_defaults.capabilities = vim.tbl_deep_extend(
  'force',
  lsp_defaults.capabilities,
  require("cmp_nvim_lsp").default_capabilities()
)

vim.api.nvim_create_autocmd("LspAttach", {
  desc = "LSP actions",
  callback = function()
    local bufmap = function(mode, lhs, rhs)
      local opts = { buffer = true }
      vim.keymap.set(mode, lhs, rhs, opts)
    end

    -- Displays hover information about the symbol under the cursor
    bufmap('n', 'K', '<cmd>lua vim.lsp.buf.hover()<cr>')

    -- Jump to the definition
    bufmap('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<cr>')

    -- Jump to declaration
    bufmap('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<cr>')

    -- Lists all the implementations for the symbol under the cursor
    bufmap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<cr>')

    -- Jumps to the definition of the type symbol
    bufmap('n', 'go', '<cmd>lua vim.lsp.buf.type_definition()<cr>')

    -- Lists all the references
    bufmap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<cr>')

    -- Displays a function's signature information
    bufmap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<cr>')

    -- Renames all references to the symbol under the cursor
    bufmap('n', '<F2>', '<cmd>lua vim.lsp.buf.rename()<cr>')

    -- Selects a code action available at the current cursor position
    bufmap('n', '<F4>', '<cmd>lua vim.lsp.buf.code_action()<cr>')
    bufmap('x', '<F4>', '<cmd>lua vim.lsp.buf.range_code_action()<cr>')

    -- Show diagnostics in a floating window
    bufmap('n', 'gl', '<cmd>lua vim.diagnostic.open_float()<cr>')

    -- Move to the previous diagnostic
    bufmap('n', '[a', '<cmd>lua vim.diagnostic.goto_prev()<cr>')

    -- Move to the next diagnostic
    bufmap('n', ']a', '<cmd>lua vim.diagnostic.goto_next()<cr>')
  end
})

vim.api.nvim_create_autocmd("BufWritePre", {
  callback = function()
    vim.lsp.buf.format()
  end
})

nvim_lsp.diagnosticls.setup {
  filetypes = { 'javascript', 'javascriptreact', 'typescript', 'typescriptreact', 'css', 'scss', 'markdown', 'pandoc',
    'prisma' },
  init_options = {
    linters = {
      eslint = {
        command = 'eslint',
        rootPatterns = { '.git' },
        debounce = 100,
        args = { '--stdin', '--stdin-filename', '%filepath', '--format', 'json' },
        sourceName = 'eslint',
        parseJson = {
          errorsRoot = '[0].messages',
          line = 'line',
          column = 'column',
          endLine = 'endLine',
          endColumn = 'endColumn',
          message = '[eslint] ${message} [${ruleId}]',
          security = 'severity'
        },
        securities = {
          [1] = 'error',
          [2] = 'warning'
        }
      },
      markdownlint = {
        command = 'markdownlint',
        rootPatterns = { '.git' },
        isStderr = true,
        debounce = 100,
        args = { '--stdin' },
        offsetLine = 0,
        offsetColumn = 0,
        sourceName = 'markdownlint',
        securities = {
          undefined = 'hint'
        },
        formatLines = 1,
        formatPattern = {
          '^.*:(\\d+)\\s+(.*)$',
          {
            line = 1,
            column = -1,
            message = 2,
          }
        }
      }
    },
    filetypes = {
      javascript = 'eslint',
      javascriptreact = 'eslint',
      typescript = 'eslint',
      typescriptreact = 'eslint',
      markdown = 'markdownlint',
      pandoc = 'markdownlint'
    },
    formatters = {
      prettier = {
        command = 'prettier',
        args = { '--stdin-filepath', '%filename' }
      }
    },
    formatFiletypes = {
      css = 'prettier',
      javascript = 'prettier',
      javascriptreact = 'prettier',
      json = 'prettier',
      scss = 'prettier',
      typescript = 'prettier',
      typescriptreact = 'prettier',
      markdown = 'prettier',
      -- This implies that you have installed a prisma-supporting plugin for
      -- prettier. You could instead configure this formatter to be `npx prisma format`
      -- directly, but that command doesn't seem to output in the way this
      -- diagnostic server expects.
      prisma = 'prettier'
    }
  }
}

nvim_lsp.elmls.setup {
}

local capabilitiesWithoutFomatting = vim.lsp.protocol.make_client_capabilities()
capabilitiesWithoutFomatting.textDocument.formatting = false
capabilitiesWithoutFomatting.textDocument.rangeFormatting = false
capabilitiesWithoutFomatting.textDocument.range_formatting = false

nvim_lsp.tsserver.setup {
  init_options = {
    hostInfo = "neovim",
    maxTsServerMemory = "8192",
    preferences = { quotePreference = "single", allowIncompleteCompletions = false },
    capabilities = capabilitiesWithoutFomatting
  }
}
nvim_lsp.elixirls.setup {
  cmd = { "elixir-ls" },
}
nvim_lsp.rnix.setup {
  cmd = { "@rnix_lsp@/bin/rnix-lsp" },
}
nvim_lsp.rust_analyzer.setup {}

nvim_lsp.lua_ls.setup {
  cmd = { "@lua_ls@/bin/lua-language-server" },
  single_file_support = true,
  flags = {
    debounce_text_changes = 150,
  },
  settings = {
    Lua = {
      diagnostics = {
        globals = { 'vim' }
      }
    }
  },
}

nvim_lsp.texlab.setup {}