-- Integration tests for virtual buffer workflow
local busted = require('busted')

describe("Virtual Buffer Workflow Integration", function()
  local ui_manager

  before_each(function()
    -- These modules don't exist yet - tests should fail
    ui_manager = require('notex.ui')
  end)

  it("should create virtual buffer for query results", function()
    local query_results = {
      documents = {
        {
          id = "doc1",
          file_path = "/tmp/document.md",
          properties = {
            title = "Test Document",
            status = "draft",
            priority = "high",
            created_at = "2024-03-15T10:30:00Z"
          }
        }
      },
      total_count = 1,
      execution_time_ms = 25
    }

    local buffer_result = ui_manager.show_query_results(query_results)

    assert.is_not_nil(buffer_result.buffer_id)
    assert.is_not_nil(buffer_result.window_id)
    assert.is_table(buffer_result.lines)
    assert.is_table(buffer_result.mappings)

    -- Verify buffer content
    local lines = buffer_result.lines
    assert.is_true(#lines > 0)

    -- Check for header line
    local found_header = false
    for _, line in ipairs(lines) do
      if line:find("Results for:") then
        found_header = true
        break
      end
    end
    assert.is_true(found_header, "Buffer should contain query results header")
  end)

  it("should handle keyboard interactions in virtual buffer", function()
    local query_results = {
      documents = {
        {
          id = "doc1",
          file_path = "/tmp/document.md",
          properties = {
            title = "Test Document",
            status = "draft"
          }
        }
      },
      total_count = 1
    }

    local buffer_result = ui_manager.show_query_results(query_results)

    -- Test opening document with Enter key
    local open_result = ui_manager.handle_keypress(buffer_result.buffer_id, "<CR>", 3)
    assert.is_true(open_result.success)
    assert.are.equal("/tmp/document.md", open_result.file_path)

    -- Test editing with 'e' key
    local edit_result = ui_manager.handle_keypress(buffer_result.buffer_id, "e", 3)
    assert.is_true(edit_result.success)
    assert.are.equal("doc1", edit_result.document_id)

    -- Test closing with 'q' key
    local close_result = ui_manager.handle_keypress(buffer_result.buffer_id, "q", 1)
    assert.is_true(close_result.success)
  end)

  it("should update document properties through virtual buffer", function()
    -- Create initial buffer
    local query_results = {
      documents = {
        {
          id = "doc1",
          file_path = "/tmp/document.md",
          properties = {
            title = "Test Document",
            status = "draft",
            priority = "high"
          }
        }
      },
      total_count = 1
    }

    local buffer_result = ui_manager.show_query_results(query_results)

    -- Simulate user editing status field
    local update_result = ui_manager.update_property_in_buffer(
      buffer_result.buffer_id,
      3, -- line number
      2, -- column number
      "review" -- new value
    )

    assert.is_true(update_result.success)
    assert.are.equal("doc1", update_result.document_id)
    assert.are.equal("status", update_result.property)
    assert.are.equal("review", update_result.new_value)
    assert.are.equal("draft", update_result.old_value)

    -- Verify the underlying file was updated
    local updated_content = ui_manager.get_document_content("doc1")
    assert.is_not_nil(updated_content:find('status: "review"'))
  end)

  it("should handle large query result sets efficiently", function()
    -- Generate large test dataset
    local large_results = { documents = {}, total_count = 1000, execution_time_ms = 45 }

    for i = 1, 1000 do
      table.insert(large_results.documents, {
        id = "doc" .. i,
        file_path = "/tmp/doc" .. i .. ".md",
        properties = {
          title = "Document " .. i,
          status = i % 2 == 0 and "active" or "draft",
          priority = math.random(1, 5)
        }
      })
    end

    local start_time = vim.loop.hrtime()
    local buffer_result = ui_manager.show_query_results(large_results)
    local end_time = vim.loop.hrtime()

    local buffer_creation_time = (end_time - start_time) / 1e6 -- Convert to milliseconds

    assert.is_not_nil(buffer_result.buffer_id)
    assert.is_true(buffer_creation_time < 100, "Buffer creation should be under 100ms")
    assert.is_true(#buffer_result.lines <= 100, "Should limit lines for performance")
  end)

  it("should gracefully handle buffer cleanup", function()
    local query_results = {
      documents = {
        {
          id = "doc1",
          properties = { title = "Test Document" }
        }
      },
      total_count = 1
    }

    local buffer_result = ui_manager.show_query_results(query_results)

    -- Verify buffer exists
    local buffer_exists = vim.api.nvim_buf_is_valid(buffer_result.buffer_id)
    assert.is_true(buffer_exists)

    -- Close buffer
    local close_result = ui_manager.close_query_view(buffer_result.buffer_id)
    assert.is_true(close_result.success)

    -- Verify buffer no longer exists
    buffer_exists = vim.api.nvim_buf_is_valid(buffer_result.buffer_id)
    assert.is_false(buffer_exists)
  end)
end)