local helpers = {}
local busted = require("plenary/busted")

local eq = assert.are.same
local cur_dir = vim.fn.expand("%:p:h")
-- local status = require("plenary.reload").reload_module("go.nvim")
-- status = require("plenary.reload").reload_module("nvim-treesitter")

-- local ulog = require('go.utils').log
describe("should run gotags", function()
  local cmd
  -- vim.fn.readfile('minimal.vim')
  -- vim.fn.writefile(vim.fn.readfile('fixtures/fmt/hello.go'), name)
  -- status = require("plenary.reload").reload_module("go.nvim")
  it("should run add json tags", function()
    --
    local name = vim.fn.tempname() .. ".go"
    local path = cur_dir .. "/lua/tests/fixtures/tags/add_all_input.go" -- %:p:h ? %:p
    local lines = vim.fn.readfile(path)
    vim.fn.writefile(lines, name)
    local expected = vim.fn.join(vim.fn.readfile(cur_dir
                                                     .. "/lua/tests/fixtures/tags/add_all_golden.go"),
                                 "\n")
    cmd = " silent exe 'e " .. name .. "'"
    vim.cmd(cmd)
    local bufn = vim.fn.bufnr("")

    vim.fn.setpos(".", {bufn, 8, 4, 0})

    local l = vim.api.nvim_buf_get_lines(0, 0, -1, true)
    -- ulog("buf read: " .. vim.inspect(l))

    vim.bo.filetype = "go"

    -- ulog("exp:" .. vim.inspect(expected))

    local gotags = require("go.tags")
    gotags.add()
    -- enable the channel response
    vim.wait(100, function()
    end)
    local fmt = vim.fn.join(vim.fn.readfile(name), "\n")
    -- ulog("tagged file: " .. fmt)
    vim.fn.assert_equal(fmt, expected)
    eq(expected, fmt)
    cmd = "bd! " .. name
    vim.cmd(cmd)
  end)
  it("should rm json tags", function()
    local name = vim.fn.tempname() .. ".go"
    --
    local path = cur_dir .. "/lua/tests/fixtures/tags/add_all_golden.go" -- %:p:h ? %:p
    local lines = vim.fn.readfile(path)
    vim.fn.writefile(lines, name)
    local expected = vim.fn.join(vim.fn.readfile(cur_dir
                                                     .. "/lua/tests/fixtures/tags/add_all_input.go"),
                                 "\n")
    cmd = " silent exe 'e " .. name .. "'"
    vim.cmd(cmd)
    local bufn = vim.fn.bufnr("")

    vim.fn.setpos(".", {bufn, 8, 4, 0})

    local l = vim.api.nvim_buf_get_lines(0, 0, -1, true)
    -- ulog("buf read: " .. vim.inspect(l))

    vim.bo.filetype = "go"

    -- ulog("exp:" .. vim.inspect(expected))

    local gotags = require("go.tags")
    gotags.rm('json')
    -- enable the channel response
    vim.wait(100, function()
    end)

    -- format the code
    local gofmt = require("go.format")
    gofmt.gofmt()
    vim.wait(100, function()
    end)
    local fmt = vim.fn.join(vim.fn.readfile(name), "\n")
    -- ulog("tagged file: " .. fmt)
    vim.fn.assert_equal(fmt, expected)
    eq(expected, fmt)
    cmd = "bd! " .. name
    vim.cmd(cmd)
  end)
  it("should run clear json tags by default", function()
    local name = vim.fn.tempname() .. ".go"
    --
    local path = cur_dir .. "/lua/tests/fixtures/tags/add_all_golden.go" -- %:p:h ? %:p
    local lines = vim.fn.readfile(path)
    vim.fn.writefile(lines, name)
    local expected = vim.fn.join(vim.fn.readfile(cur_dir
                                                     .. "/lua/tests/fixtures/tags/add_all_input.go"),
                                 "\n")
    cmd = " silent exe 'e " .. name .. "'"
    vim.cmd(cmd)
    local bufn = vim.fn.bufnr("")

    vim.fn.setpos(".", {bufn, 8, 4, 0})

    local l = vim.api.nvim_buf_get_lines(0, 0, -1, true)
    -- ulog("buf read: " .. vim.inspect(l))

    vim.bo.filetype = "go"

    -- ulog("exp:" .. vim.inspect(expected))

    local gotags = require("go.tags")
    gotags.rm()
    -- enable the channel response
    vim.wait(100, function()
    end)

    local gofmt = require("go.format")
    gofmt.gofmt()
    vim.wait(100, function()
    end)

    local fmt = vim.fn.join(vim.fn.readfile(name), "\n")
    -- ulog("tagged file: " .. fmt)
    vim.fn.assert_equal(fmt, expected)
    eq(expected, fmt)
    cmd = "bd! " .. name
    vim.cmd(cmd)
  end)
  it("should clear all tags", function()

    local name = vim.fn.tempname() .. ".go"
    --
    local path = cur_dir .. "/lua/tests/fixtures/tags/add_all_golden.go" -- %:p:h ? %:p
    local lines = vim.fn.readfile(path)
    vim.fn.writefile(lines, name)
    local expected = vim.fn.join(vim.fn.readfile(cur_dir
                                                     .. "/lua/tests/fixtures/tags/add_all_input.go"),
                                 "\n")
    cmd = " silent exe 'e " .. name .. "'"
    vim.cmd(cmd)
    local bufn = vim.fn.bufnr("")

    vim.fn.setpos(".", {bufn, 8, 4, 0})

    local l = vim.api.nvim_buf_get_lines(0, 0, -1, true)
    -- ulog("buf read: " .. vim.inspect(l))

    vim.bo.filetype = "go"

    -- ulog("exp:" .. vim.inspect(expected))

    local gotags = require("go.tags")
    gotags.rm()
    -- enable the channel response
    vim.wait(100, function()
    end)

    local gofmt = require("go.format")
    gofmt.gofmt()
    vim.wait(100, function()
    end)

    local fmt = vim.fn.join(vim.fn.readfile(name), "\n")
    -- ulog("tagged file: " .. fmt)
    vim.fn.assert_equal(fmt, expected)
    eq(expected, fmt)
    cmd = "bd! " .. name
    vim.cmd(cmd)
  end)
end)