# Copyright 2017-2020 Palantir Technologies, Inc.
# Copyright 2021- Python Language Server Contributors.

from pylsp import uris
from pylsp.text_edit import OverLappingTextEditException, apply_text_edits

DOC_URI = uris.from_fs_path(__file__)


def test_apply_text_edits_insert(pylsp) -> None:
    pylsp.workspace.put_document(DOC_URI, "012345678901234567890123456789")
    test_doc = pylsp.workspace.get_document(DOC_URI)

    assert (
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 0},
                        "end": {"line": 0, "character": 0},
                    },
                    "newText": "Hello",
                }
            ],
        )
        == "Hello012345678901234567890123456789"
    )
    assert (
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 1},
                        "end": {"line": 0, "character": 1},
                    },
                    "newText": "Hello",
                }
            ],
        )
        == "0Hello12345678901234567890123456789"
    )
    assert (
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 1},
                        "end": {"line": 0, "character": 1},
                    },
                    "newText": "Hello",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 1},
                        "end": {"line": 0, "character": 1},
                    },
                    "newText": "World",
                },
            ],
        )
        == "0HelloWorld12345678901234567890123456789"
    )
    assert (
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 2},
                        "end": {"line": 0, "character": 2},
                    },
                    "newText": "One",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 1},
                        "end": {"line": 0, "character": 1},
                    },
                    "newText": "Hello",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 1},
                        "end": {"line": 0, "character": 1},
                    },
                    "newText": "World",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 2},
                        "end": {"line": 0, "character": 2},
                    },
                    "newText": "Two",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 2},
                        "end": {"line": 0, "character": 2},
                    },
                    "newText": "Three",
                },
            ],
        )
        == "0HelloWorld1OneTwoThree2345678901234567890123456789"
    )


def test_apply_text_edits_replace(pylsp) -> None:
    pylsp.workspace.put_document(DOC_URI, "012345678901234567890123456789")
    test_doc = pylsp.workspace.get_document(DOC_URI)

    assert (
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 3},
                        "end": {"line": 0, "character": 6},
                    },
                    "newText": "Hello",
                }
            ],
        )
        == "012Hello678901234567890123456789"
    )
    assert (
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 3},
                        "end": {"line": 0, "character": 6},
                    },
                    "newText": "Hello",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 6},
                        "end": {"line": 0, "character": 9},
                    },
                    "newText": "World",
                },
            ],
        )
        == "012HelloWorld901234567890123456789"
    )
    assert (
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 3},
                        "end": {"line": 0, "character": 6},
                    },
                    "newText": "Hello",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 6},
                        "end": {"line": 0, "character": 6},
                    },
                    "newText": "World",
                },
            ],
        )
        == "012HelloWorld678901234567890123456789"
    )
    assert (
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 6},
                        "end": {"line": 0, "character": 6},
                    },
                    "newText": "World",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 3},
                        "end": {"line": 0, "character": 6},
                    },
                    "newText": "Hello",
                },
            ],
        )
        == "012HelloWorld678901234567890123456789"
    )
    assert (
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 3},
                        "end": {"line": 0, "character": 3},
                    },
                    "newText": "World",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 3},
                        "end": {"line": 0, "character": 6},
                    },
                    "newText": "Hello",
                },
            ],
        )
        == "012WorldHello678901234567890123456789"
    )


def test_apply_text_edits_overlap(pylsp) -> None:
    pylsp.workspace.put_document(DOC_URI, "012345678901234567890123456789")
    test_doc = pylsp.workspace.get_document(DOC_URI)

    did_throw = False
    try:
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 3},
                        "end": {"line": 0, "character": 6},
                    },
                    "newText": "Hello",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 3},
                        "end": {"line": 0, "character": 3},
                    },
                    "newText": "World",
                },
            ],
        )
    except OverLappingTextEditException:
        did_throw = True

    assert did_throw

    did_throw = False

    try:
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 0, "character": 3},
                        "end": {"line": 0, "character": 6},
                    },
                    "newText": "Hello",
                },
                {
                    "range": {
                        "start": {"line": 0, "character": 4},
                        "end": {"line": 0, "character": 4},
                    },
                    "newText": "World",
                },
            ],
        )
    except OverLappingTextEditException:
        did_throw = True

    assert did_throw


def test_apply_text_edits_multiline(pylsp) -> None:
    pylsp.workspace.put_document(DOC_URI, "0\n1\n2\n3\n4")
    test_doc = pylsp.workspace.get_document(DOC_URI)

    assert (
        apply_text_edits(
            test_doc,
            [
                {
                    "range": {
                        "start": {"line": 2, "character": 0},
                        "end": {"line": 3, "character": 0},
                    },
                    "newText": "Hello",
                },
                {
                    "range": {
                        "start": {"line": 1, "character": 1},
                        "end": {"line": 1, "character": 1},
                    },
                    "newText": "World",
                },
            ],
        )
        == "0\n1World\nHello3\n4"
    )