local ignored = require('std.ignored')
require('bugabinga.treesitter')

local function deep_copy(t)
  local copy = {}
  for k, v in pairs(t) do
    copy[k] = v
  end
  return copy
end

local function table_eq(a, b)
  if type(a) ~= 'table' or type(b) ~= 'table' then return a == b end
  for k, v in pairs(a) do
    if not table_eq(v, b[k]) then return false end
  end
  for k, v in pairs(b) do
    if not table_eq(v, a[k]) then return false end
  end
  return true
end

describe('is_ignored', function()
  local original_filetypes
  local original_filetypes_kv
  local original_filetypes_patterns

  before_each(function()
    original_filetypes = deep_copy(ignored.filetypes)
    original_filetypes_kv = deep_copy(ignored.filetypes_kv)
    if ignored.filetypes_patterns then
      original_filetypes_patterns = deep_copy(ignored.filetypes_patterns)
    end
  end)

  after_each(function()
    ignored.filetypes = original_filetypes
    ignored.filetypes_kv = original_filetypes_kv
    ignored.filetypes_patterns = original_filetypes_patterns
  end)

  describe('correctness', function()
    local function expect_ignored(match, expected)
      local result = BugabingaTreesitter.is_ignored(match)
      assert.is.equal(expected, result,
        string.format('is_ignored(%q) = %s, expected %s', match, tostring(result), tostring(expected)))
    end

    it('returns true for exact match "help"', function()
      expect_ignored('help', true)
    end)

    it('returns true for exact match "oil"', function()
      expect_ignored('oil', true)
    end)

    it('returns true for exact match "lazy"', function()
      expect_ignored('lazy', true)
    end)

    it('returns true for pattern match "gitcommit" (matches ^git.*)', function()
      expect_ignored('gitcommit', true)
    end)

    it('returns true for pattern match "git" (matches ^git.*)', function()
      expect_ignored('git', true)
    end)

    it('returns false for non-ignored filetype "lua"', function()
      expect_ignored('lua', false)
    end)

    it('returns false for non-ignored filetype "rust"', function()
      expect_ignored('rust', false)
    end)

    it('returns false for non-ignored filetype "python"', function()
      expect_ignored('python', false)
    end)

    it('returns false for "text" (caller handles it separately)', function()
      expect_ignored('text', false)
    end)

    it('returns false for empty string', function()
      expect_ignored('', false)
    end)
  end)

end)