local eq = assert.are.same
local cur_dir = vim.fn.expand('%:p:h')
local busted = require('plenary/busted')

describe('should run gofmt', function()
  -- vim.fn.readfile('minimal.vim')
  -- vim.fn.writefile(vim.fn.readfile('fixtures/fmt/hello.go'), name)
  require('plenary.reload').reload_module('go.nvim')
  it('should run fmt', function()
    local name = vim.fn.tempname() .. '.go'
    print('tmp:' .. name)
    --
    local path = cur_dir .. '/lua/tests/fixtures/fmt/hello.go' -- %:p:h ? %:p
    print('test:' .. path)
    local lines = vim.fn.readfile(path)
    vim.fn.writefile(lines, name)
    local expected =
      vim.fn.join(vim.fn.readfile(cur_dir .. '/lua/tests/fixtures/fmt/hello_golden.go'), '\n')
    local cmd = " silent exe 'e " .. name .. "'"
    vim.cmd(cmd)
    local l = vim.api.nvim_buf_get_lines(0, 0, -1, true)
    print('buf read: ' .. vim.inspect(l))

    vim.bo.filetype = 'go'

    print('exp:' .. vim.inspect(expected))
    print('tmp' .. name)

    local gofmt = require('go.format')
    gofmt.gofmt()
    -- enable the channel response
    vim.wait(400, function() end)
    local fmt = vim.fn.join(vim.fn.readfile(name), '\n')
    print('fmt' .. fmt)
    vim.fn.assert_equal(fmt, expected)
    eq(expected, fmt)
    cmd = 'bd! ' .. name
    vim.cmd(cmd)
  end)
  it('should run fmt sending from buffer', function()
    local name = vim.fn.tempname() .. '.go'
    print('tmp:' .. name)
    --
    local path = cur_dir .. '/lua/tests/fixtures/fmt/hello.go' -- %:p:h ? %:p
    print('test:' .. path)
    local lines = vim.fn.readfile(path)
    vim.fn.writefile(lines, name)
    local expected =
      vim.fn.join(vim.fn.readfile(cur_dir .. '/lua/tests/fixtures/fmt/hello_golden.go'), '\n')
    local cmd = " silent exe 'e " .. name .. "'"
    vim.cmd(cmd)

    vim.cmd([[packadd go.nvim]])
    local l = vim.api.nvim_buf_get_lines(0, 0, -1, true)
    print('buf read: ' .. vim.inspect(l))

    vim.bo.filetype = 'go'

    print('exp:' .. vim.inspect(expected))
    print('tmp' .. name)

    local gofmt = require('go.format')
    gofmt.gofmt()
    -- enable the channel response
    vim.wait(400, function() end)
    local fmt = vim.fn.join(vim.fn.readfile(name), '\n')
    print('fmt' .. fmt)
    vim.fn.assert_equal(fmt, expected)
    eq(expected, fmt)
    cmd = 'bd! ' .. name
    vim.cmd(cmd)
  end)
  it('should run import from file with goimports', function()
    local path = cur_dir .. '/lua/tests/fixtures/fmt/goimports.go' -- %:p:h ? %:p
    local expected =
      vim.fn.join(vim.fn.readfile(cur_dir .. '/lua/tests/fixtures/fmt/goimports_golden.go'), '\n')
    local name = vim.fn.tempname() .. '.go'
    print(name)
    local lines = vim.fn.readfile(path)
    vim.fn.writefile(lines, name)
    local cmd = " silent exe 'e " .. name .. "'"
    vim.cmd(cmd)

    vim.cmd([[packadd go.nvim]])
    require('go').setup({ goimports = 'goimports' })
    _GO_NVIM_CFG.goimports = 'goimports'
    vim.cmd([[cd %:p:h]])
    require('go.format').goimports()
    -- print('workspaces:', vim.inspect(vim.lsp.buf.list_workspace_folders()))
    vim.wait(500, function() end)
    local fmt = vim.fn.join(vim.fn.readfile(name), '\n')
    eq(expected, fmt)
    cmd = 'bd! ' .. name
    vim.cmd(cmd)
  end)
  it('should run import from file with goimports with package name', function()
    local path = cur_dir .. '/lua/tests/fixtures/fmt/goimports.go' -- %:p:h ? %:p
    local expected =
      vim.fn.join(vim.fn.readfile(cur_dir .. '/lua/tests/fixtures/fmt/goimports_golden.go'), '\n')
    local name = vim.fn.tempname() .. '.go'
    print(name)
    local lines = vim.fn.readfile(path)
    local cmd = " silent exe 'e " .. name .. "'"
    vim.fn.writefile(lines, name)
    vim.cmd(cmd)
    vim.cmd([[cd %:p:h]])
    print('code write to ' .. name)

    require('go').setup({ goimports = 'goimports', gofmt = 'gofmt' })
    local gofmt = require('go.format')
    gofmt.goimports('fmt')

    vim.wait(400, function() end)
    vim.cmd([[w]])
    local fmt = vim.fn.join(vim.fn.readfile(name), '\n')

    print(fmt)
    eq(expected, fmt)
    vim.cmd('%bdelete!')
  end)
end)