require('spec.helpers')

local config = require('pending.config')

describe('textobj', function()
  local textobj = require('pending.textobj')

  before_each(function()
    vim.g.pending = nil
    config.reset()
  end)

  after_each(function()
    vim.g.pending = nil
    config.reset()
  end)

  describe('inner_task_range', function()
    it('returns description range for task with id prefix', function()
      local s, e = textobj.inner_task_range('/1/- [ ] Buy groceries')
      assert.are.equal(10, s)
      assert.are.equal(22, e)
    end)

    it('returns description range for task without id prefix', function()
      local s, e = textobj.inner_task_range('- [ ] Buy groceries')
      assert.are.equal(7, s)
      assert.are.equal(19, e)
    end)

    it('excludes trailing due: token', function()
      local s, e = textobj.inner_task_range('/1/- [ ] Buy groceries due:2026-03-15')
      assert.are.equal(10, s)
      assert.are.equal(22, e)
    end)

    it('excludes trailing cat: token', function()
      local s, e = textobj.inner_task_range('/1/- [ ] Buy groceries cat:Errands')
      assert.are.equal(10, s)
      assert.are.equal(22, e)
    end)

    it('excludes trailing rec: token', function()
      local s, e = textobj.inner_task_range('/1/- [ ] Take out trash rec:weekly')
      assert.are.equal(10, s)
      assert.are.equal(23, e)
    end)

    it('excludes multiple trailing metadata tokens', function()
      local s, e =
        textobj.inner_task_range('/1/- [ ] Buy milk due:2026-03-15 cat:Errands rec:weekly')
      assert.are.equal(10, s)
      assert.are.equal(17, e)
    end)

    it('handles priority checkbox', function()
      local s, e = textobj.inner_task_range('/1/- [!] Important task')
      assert.are.equal(10, s)
      assert.are.equal(23, e)
    end)

    it('handles done checkbox', function()
      local s, e = textobj.inner_task_range('/1/- [x] Finished task')
      assert.are.equal(10, s)
      assert.are.equal(22, e)
    end)

    it('handles multi-digit task ids', function()
      local s, e = textobj.inner_task_range('/123/- [ ] Some task')
      assert.are.equal(12, s)
      assert.are.equal(20, e)
    end)

    it('does not strip non-metadata tokens', function()
      local s, e = textobj.inner_task_range('/1/- [ ] Buy groceries for dinner')
      assert.are.equal(10, s)
      assert.are.equal(33, e)
    end)

    it('stops stripping at first non-metadata token from right', function()
      local s, e = textobj.inner_task_range('/1/- [ ] Buy groceries for dinner due:2026-03-15')
      assert.are.equal(10, s)
      assert.are.equal(33, e)
    end)

    it('respects custom date_syntax', function()
      vim.g.pending = { date_syntax = 'by' }
      config.reset()
      local s, e = textobj.inner_task_range('/1/- [ ] Buy groceries by:2026-03-15')
      assert.are.equal(10, s)
      assert.are.equal(22, e)
    end)

    it('respects custom recur_syntax', function()
      vim.g.pending = { recur_syntax = 'repeat' }
      config.reset()
      local s, e = textobj.inner_task_range('/1/- [ ] Take trash repeat:weekly')
      assert.are.equal(10, s)
      assert.are.equal(19, e)
    end)

    it('handles task with only metadata after description', function()
      local s, e = textobj.inner_task_range('/1/- [ ] X due:tomorrow')
      assert.are.equal(10, s)
      assert.are.equal(10, e)
    end)
  end)

  describe('category_bounds', function()
    it('returns header and last row for single category', function()
      ---@type pending.LineMeta[]
      local meta = {
        { type = 'header', category = 'Work' },
        { type = 'task', id = 1 },
        { type = 'task', id = 2 },
      }
      local h, l = textobj.category_bounds(2, meta)
      assert.are.equal(1, h)
      assert.are.equal(3, l)
    end)

    it('returns bounds for first category with trailing blank', function()
      ---@type pending.LineMeta[]
      local meta = {
        { type = 'header', category = 'Work' },
        { type = 'task', id = 1 },
        { type = 'blank' },
        { type = 'header', category = 'Personal' },
        { type = 'task', id = 2 },
      }
      local h, l = textobj.category_bounds(2, meta)
      assert.are.equal(1, h)
      assert.are.equal(3, l)
    end)

    it('returns bounds for second category', function()
      ---@type pending.LineMeta[]
      local meta = {
        { type = 'header', category = 'Work' },
        { type = 'task', id = 1 },
        { type = 'blank' },
        { type = 'header', category = 'Personal' },
        { type = 'task', id = 2 },
        { type = 'task', id = 3 },
      }
      local h, l = textobj.category_bounds(5, meta)
      assert.are.equal(4, h)
      assert.are.equal(6, l)
    end)

    it('returns bounds when cursor is on header', function()
      ---@type pending.LineMeta[]
      local meta = {
        { type = 'header', category = 'Work' },
        { type = 'task', id = 1 },
      }
      local h, l = textobj.category_bounds(1, meta)
      assert.are.equal(1, h)
      assert.are.equal(2, l)
    end)

    it('returns nil for blank line with no preceding header', function()
      ---@type pending.LineMeta[]
      local meta = {
        { type = 'blank' },
        { type = 'header', category = 'Work' },
        { type = 'task', id = 1 },
      }
      local h, l = textobj.category_bounds(1, meta)
      assert.is_nil(h)
      assert.is_nil(l)
    end)

    it('returns nil for empty meta', function()
      local h, l = textobj.category_bounds(1, {})
      assert.is_nil(h)
      assert.is_nil(l)
    end)

    it('includes blank between header and next header in bounds', function()
      ---@type pending.LineMeta[]
      local meta = {
        { type = 'header', category = 'Work' },
        { type = 'task', id = 1 },
        { type = 'blank' },
        { type = 'header', category = 'Home' },
        { type = 'task', id = 2 },
      }
      local h, l = textobj.category_bounds(1, meta)
      assert.are.equal(1, h)
      assert.are.equal(3, l)
    end)
  end)
end)