-- Copyright (c) 2020-2021 shadmansaleh
-- MIT license, see LICENSE for more details.

local eq = assert.are.same

describe('config parsing', function()
  local config_module = require('lualine.config')

  describe('options', function()
    describe('icons_enabled', function()
      it('default', function()
        local config = config_module.apply_configuration {}
        eq(config.options.icons_enabled, true)
      end)
      it('custom', function()
        local config = { options = { icons_enabled = false } }
        config = config_module.apply_configuration(config)
        eq(config.options.icons_enabled, false)
      end)
    end)

    describe('theme', function()
      it('default', function()
        local config = config_module.apply_configuration {}
        eq(config.options.theme, 'auto')
      end)
      it('custom', function()
        local config = { options = { theme = 'nord' } }
        config = config_module.apply_configuration(config)
        eq(config.options.theme, 'nord')
        config = { options = { theme = {} } }
        config = config_module.apply_configuration(config)
        eq(config.options.theme, {})
      end)
    end)

    describe('separators', function()
      it('default', function()
        local config = config_module.apply_configuration {}
        eq(config.options.component_separators, { left = '', right = '' })
        eq(config.options.section_separators, { left = '', right = '' })
      end)
      it('double separators', function()
        local config = {
          options = {
            component_separators = { left = 'a', right = 'b' },
            section_separators = { left = 'c', right = 'd' },
          },
        }
        config = config_module.apply_configuration(config)
        eq(config.options.component_separators, { left = 'a', right = 'b' })
        eq(config.options.section_separators, { left = 'c', right = 'd' })
      end)

      describe('single separator', function()
        it('string', function()
          local config = {
            options = { component_separators = 'a', section_separators = 'b' },
          }
          config = config_module.apply_configuration(config)
          eq(config.options.component_separators, { left = 'a', right = 'a' })
          eq(config.options.section_separators, { left = 'b', right = 'b' })
        end)
        it('table', function()
          local config = {
            options = {
              component_separators = { left = 'a', right = 'b' },
              section_separators = { left = 'b', right = 'a' },
            },
          }
          config = config_module.apply_configuration(config)
          eq(config.options.component_separators, { left = 'a', right = 'b' })
          eq(config.options.section_separators, { left = 'b', right = 'a' })
        end)
      end)
      it('no separators', function()
        local config = {
          options = { component_separators = {}, section_separators = {} },
        }
        config = config_module.apply_configuration(config)
        eq(config.options.component_separators, {})
        eq(config.options.section_separators, {})
      end)
    end)

    describe('disabled filetypes', function()
      it('default', function()
        local config = config_module.apply_configuration {}
        eq(config.options.disabled_filetypes, {statusline={}, winbar={}})
      end)
      it('custom', function()
        local config = { options = { disabled_filetypes = { 'lua' } } }
        config = config_module.apply_configuration(config)
        eq(config.options.disabled_filetypes, {statusline={'lua'}, winbar={'lua'}})
      end)
    end)

    describe('non default global option', function()
      it('default', function()
        local config = { options = {} }
        config = config_module.apply_configuration(config)
        eq(config.options.non_default_global_option, nil)
      end)
      it('custom', function()
        local config = { options = { non_default_global_option = 1 } }
        config = config_module.apply_configuration(config)
        eq(config.options.non_default_global_option, 1)
      end)
    end)
  end)

  describe('sections', function()
    it('default', function()
      local config = {}
      config = config_module.apply_configuration(config)
      local lualine_default_sections = {
        lualine_a = { 'mode' },
        lualine_b = { 'branch', 'diff', 'diagnostics' },
        lualine_c = { 'filename' },
        lualine_x = { 'encoding', 'fileformat', 'filetype' },
        lualine_y = { 'progress' },
        lualine_z = { 'location' },
      }
      eq(config.sections, lualine_default_sections)
    end)
    it('custom', function()
      local custom_sections = {
        lualine_a = { { 'mode', lower = true } },
        lualine_b = { 'branch', { 'branch', lower = true } },
        lualine_c = nil,
        lualine_x = {},
      }
      local expected_sections = {
        lualine_a = { { 'mode', lower = true } },
        lualine_b = { 'branch', { 'branch', lower = true } },
        lualine_c = { 'filename' },
        lualine_x = {},
        lualine_y = { 'progress' },
        lualine_z = { 'location' },
      }
      local config = { sections = custom_sections }
      config = config_module.apply_configuration(config)
      eq(config.sections, expected_sections)
    end)
  end)

  describe('inactive_sections', function() end)

  describe('tabline', function()
    it('default', function()
      local config = {}
      config = config_module.apply_configuration(config)
      eq(config.tabline, {})
    end)
    it('custom', function()
      local custom_sections = {
        lualine_a = { { 'mode', lower = true } },
        lualine_b = { 'branch', { 'branch', lower = true } },
        lualine_c = nil,
        lualine_x = {},
      }
      local expected_sections = {
        lualine_a = { { 'mode', lower = true } },
        lualine_b = { 'branch', { 'branch', lower = true } },
        lualine_x = {},
      }
      local config = { tabline = custom_sections }
      config = config_module.apply_configuration(config)
      eq(config.tabline, expected_sections)
    end)
  end)

  describe('extensions', function()
    it('default', function()
      local config = { options = {} }
      config = config_module.apply_configuration(config)
      eq(config.extensions, {})
    end)
    it('custom', function()
      local config = { extensions = { 'fugitive' } }
      config = config_module.apply_configuration(config)
      eq(config.extensions, { 'fugitive' })
    end)
  end)
end)