from test.vim_test_case import VimTestCase as _VimTest
from test.constant import *


class SnippetActions_PreActionModifiesBuffer(_VimTest):
    files = { 'us/all.snippets': r"""
        pre_expand "snip.buffer[snip.line:snip.line] = ['\n']"
        snippet a "desc" "True" e
        abc
        endsnippet
        """}
    keys = 'a' + EX
    wanted = '\nabc'


class SnippetActions_PostActionModifiesBuffer(_VimTest):
    files = { 'us/all.snippets': r"""
        post_expand "snip.buffer[snip.line+1:snip.line+1] = ['\n']"
        snippet a "desc" "True" e
        abc
        endsnippet
        """}
    keys = 'a' + EX
    wanted = 'abc\n'

class SnippetActions_ErrorOnBufferModificationThroughCommand(_VimTest):
    files = { 'us/all.snippets': r"""
        pre_expand "vim.command('normal O')"
        snippet a "desc" "True" e
        abc
        endsnippet
        """}
    keys = 'a' + EX
    expected_error = 'changes are untrackable'


class SnippetActions_ErrorOnModificationSnippetLine(_VimTest):
    files = { 'us/all.snippets': r"""
        post_expand "vim.command('normal dd')"
        snippet i "desc" "True" e
        if:
            $1
        endsnippet
        """}
    keys = 'i' + EX
    expected_error = 'line under the cursor was modified'


class SnippetActions_EnsureIndent(_VimTest):
    files = { 'us/all.snippets': r"""
        pre_expand "snip.buffer[snip.line] = ' '*4; snip.cursor[1] = 4"
        snippet i "desc" "True" e
        if:
            $1
        endsnippet
        """}
    keys = '\ni' + EX + 'i' + EX + 'x'
    wanted = """
    if:
    if:
        x"""


class SnippetActions_PostActionCanUseSnippetRange(_VimTest):
    files = { 'us/all.snippets': r"""
        global !p
        def ensure_newlines(start, end):
            snip.buffer[start[0]:start[0]] = ['\n'] * 2
            snip.buffer[end[0]+1:end[0]+1] = ['\n'] * 1
        endglobal

        post_expand "ensure_newlines(snip.snippet_start, snip.snippet_end)"
        snippet i "desc"
        if
            $1
        else
            $2
        end
        endsnippet
        """}
    keys = '\ni' + EX + 'x' + JF + 'y'
    wanted = """


if
    x
else
    y
end
"""


class SnippetActions_CanModifyParentBody(_VimTest):
    files = { 'us/all.snippets': r"""
        global !p
        def ensure_newlines(start, end):
            snip.buffer[start[0]:start[0]] = ['\n'] * 2
        endglobal

        post_expand "ensure_newlines(snip.snippet_start, snip.snippet_end)"
        snippet i "desc"
        if
            $1
        else
            $2
        end
        endsnippet
        """}
    keys = '\ni' + EX + 'i' + EX + 'x' + JF + 'y' + JF + JF + 'z'
    wanted = """


if


    if
        x
    else
        y
    end
else
    z
end"""


class SnippetActions_MoveParentSnippetFromChildInPreAction(_VimTest):
    files = { 'us/all.snippets': r"""
        global !p
        def insert_import():
            snip.buffer[2:2] = ['import smthing', '']
        endglobal

        pre_expand "insert_import()"
        snippet p "desc"
        print(smthing.traceback())
        endsnippet

        snippet i "desc"
        if
            $1
        else
            $2
        end
        endsnippet
        """}
    keys = 'i' + EX + 'p' + EX + JF + 'z'
    wanted = """import smthing

if
    print(smthing.traceback())
else
    z
end"""


class SnippetActions_CanExpandSnippetInDifferentPlace(_VimTest):
    files = { 'us/all.snippets': r"""
        global !p
        def expand_after_if(snip):
            snip.buffer[snip.line] = snip.buffer[snip.line][:snip.column] + \
                snip.buffer[snip.line][snip.column+1:]
            snip.cursor[1] = snip.buffer[snip.line].index('if ')+3
        endglobal

        pre_expand "expand_after_if(snip)"
        snippet n "append not to if" w
        not $0
        endsnippet

        snippet i "if cond" w
        if $1: $2
        endsnippet
        """}
    keys = 'i' + EX + 'blah' + JF + 'n' + EX + JF + 'pass'
    wanted = """if not blah: pass"""


class SnippetActions_MoveVisual(_VimTest):
    files = { 'us/all.snippets': r"""
        global !p
        def extract_method(snip):
            del snip.buffer[snip.line]
            snip.buffer[len(snip.buffer)-1:len(snip.buffer)-1] = ['']
            snip.cursor.set(len(snip.buffer)-2, 0)
        endglobal

        pre_expand "extract_method(snip)"
        snippet n "append not to if" w
        def $1:
            ${VISUAL}

        endsnippet
        """}

    keys = """
def a:
    x()
    y()
    z()""" + ESC + 'kVk' + EX + 'n' + EX + 'b'

    wanted = """
def a:
    z()

def b:
    x()
    y()"""


class SnippetActions_CanMirrorTabStopsOutsideOfSnippet(_VimTest):
    files = { 'us/all.snippets': r"""
        post_jump "snip.buffer[2] = 'debug({})'.format(snip.tabstops[1].current_text)"
        snippet i "desc"
        if $1:
            $2
        endsnippet
        """}
    keys = """
---
i""" + EX + "test(some(complex(cond(a))))" + JF + "x"
    wanted = """debug(test(some(complex(cond(a)))))
---
if test(some(complex(cond(a)))):
    x"""


class SnippetActions_CanExpandAnonSnippetInJumpAction(_VimTest):
    files = { 'us/all.snippets': r"""
        global !p
        def expand_anon(snip):
            if snip.tabstop == 0:
                snip.expand_anon("a($2, $1)")
        endglobal

        post_jump "expand_anon(snip)"
        snippet i "desc"
        if ${1:cond}:
            $0
        endsnippet
        """}
    keys = "i" + EX + "x" + JF + "1" + JF + "2" + JF + ";"
    wanted = """if x:
    a(2, 1);"""


class SnippetActions_CanExpandAnonSnippetInJumpActionWhileSelected(_VimTest):
    files = { 'us/all.snippets': r"""
        global !p
        def expand_anon(snip):
            if snip.tabstop == 0:
                snip.expand_anon(" // a($2, $1)")
        endglobal

        post_jump "expand_anon(snip)"
        snippet i "desc"
        if ${1:cond}:
            ${2:pass}
        endsnippet
        """}
    keys = "i" + EX + "x" + JF + JF + "1" + JF + "2" + JF + ";"
    wanted = """if x:
    pass // a(2, 1);"""


class SnippetActions_CanUseContextFromContextMatch(_VimTest):
    files = { 'us/all.snippets': r"""
        pre_expand "snip.buffer[snip.line:snip.line] = [snip.context]"
        snippet i "desc" "'some context'" e
        body
        endsnippet
        """}
    keys = "i" + EX
    wanted = """some context
body"""

class SnippetActions_CanExpandAnonSnippetOnFirstJump(_VimTest):
    files = { 'us/all.snippets': r"""
        global !p
        def expand_new_snippet_on_first_jump(snip):
            if snip.tabstop == 1:
                snip.expand_anon("some_check($1, $2, $3)")
        endglobal

        post_jump "expand_new_snippet_on_first_jump(snip)"
        snippet "test" "test new features" "True" bwre
        if $1: $2
        endsnippet
        """}
    keys = "test" + EX + "1" + JF + "2" + JF + "3" + JF + " or 4" + JF + "5"
    wanted = """if some_check(1, 2, 3) or 4: 5"""

class SnippetActions_CanExpandAnonOnPreExpand(_VimTest):
    files = { 'us/all.snippets': r"""
        pre_expand "snip.buffer[snip.line] = ''; snip.expand_anon('totally_different($2, $1)')"
        snippet test "test new features" wb
        endsnippet
        """}
    keys = "test" + EX + "1" + JF + "2" + JF + "3"
    wanted = """totally_different(2, 1)3"""

class SnippetActions_CanEvenWrapSnippetInPreAction(_VimTest):
    files = { 'us/all.snippets': r"""
        pre_expand "snip.buffer[snip.line] = ''; snip.expand_anon('some_wrapper($1): $2')"
        snippet test "test new features" wb
        wrapme($2, $1)
        endsnippet
        """}
    keys = "test" + EX + "1" + JF + "2" + JF + "3" + JF + "4"
    wanted = """some_wrapper(wrapme(2, 1)3): 4"""

class SnippetActions_CanVisuallySelectFirstPlaceholderInAnonSnippetInPre(_VimTest):
    files = { 'us/all.snippets': r"""
        pre_expand "snip.buffer[snip.line] = ''; snip.expand_anon('${1:asd}, ${2:blah}')"
        snippet test "test new features" wb
        endsnippet
        """}
    keys = "test" + EX + "1" + JF + "2"
    wanted = """1, 2"""

class SnippetActions_UseCorrectJumpActions(_VimTest):
    files = { 'us/all.snippets': r"""
        post_jump "snip.buffer[-2:-2]=['a' + str(snip.tabstop)]"
        snippet a "a" wb
        $1 {
        $2
        }
        endsnippet

        snippet b "b" wb
        bbb
        endsnippet

        post_jump "snip.buffer[-2:-2]=['c' + str(snip.tabstop)]"
        snippet c "c" w
        $1 : $2 : $3
        endsnippet
        """}
    keys = "a" + EX + "1" + JF + "b" + EX + " c" + EX + "2" + JF + "3" + JF + "4" + JF + JF
    wanted = """1 {
bbb 2 : 3 : 4
}
a1
a2
c1
c2
c3
c0
a0"""

class SnippetActions_PostActionModifiesCharAfterSnippet(_VimTest):
    files = { 'us/all.snippets': r"""
        post_expand "snip.buffer[snip.snippet_end[0]] = snip.buffer[snip.snippet_end[0]][:-1]"
        snippet a "desc" i
        ($1)
        endsnippet
        """}
    keys = '[]' + ARR_L + 'a' + EX + '1' + JF + '2'
    wanted = '[(1)2'


class SnippetActions_PostActionModifiesLineAfterSnippet(_VimTest):
    files = { 'us/all.snippets': r"""
        post_expand "snip.buffer[snip.snippet_end[0]+1:snip.snippet_end[0]+2] = []"
        snippet a "desc"
        1: $1
        $0
        endsnippet
        """}
    keys = '\n3' + ARR_U + 'a' + EX + '1' + JF + '2'
    wanted = '1: 1\n2'