#!/bin/sh

last_shelved_change () {
        p4 changes -s shelved -m1 | cut -d " " -f 2
}

test_description='git p4 unshelve'

. ./lib-git-p4.sh

test_expect_success 'start p4d' '
        start_p4d
'

test_expect_success 'init depot' '
        (
                cd "$cli" &&
                echo file1 >file1 &&
                p4 add file1 &&
                p4 submit -d "change 1" &&
                : >file_to_delete &&
                : >file_to_move &&
                p4 add file_to_delete &&
                p4 add file_to_move &&
                p4 submit -d "add files to delete"
        )
'

test_expect_success 'initial clone' '
        git p4 clone --dest="$git" //depot/@all
'

test_expect_success 'create shelved changelist' '
        (
                cd "$cli" &&
                p4 edit file1 &&
                echo "a change" >>file1 &&
                echo "new file" >file2 &&
                p4 add file2 &&
                p4 delete file_to_delete &&
                p4 edit file_to_move &&
                p4 move file_to_move moved_file &&
                p4 opened &&
                p4 shelve -i <<EOF
Change: new
Description:
        Test commit

        Further description
Files:
        //depot/file1
        //depot/file2
        //depot/file_to_delete
        //depot/file_to_move
        //depot/moved_file
EOF

        ) &&
        (
                cd "$git" &&
                change=$(last_shelved_change) &&
                git p4 unshelve $change &&
                git show refs/remotes/p4-unshelved/$change | grep -q "Further description" &&
                git cherry-pick refs/remotes/p4-unshelved/$change &&
                test_path_is_file file2 &&
                test_cmp file1 "$cli"/file1 &&
                test_cmp file2 "$cli"/file2 &&
                test_path_is_missing file_to_delete &&
                test_path_is_missing file_to_move &&
                test_path_is_file moved_file
        )
'

test_expect_success 'update shelved changelist and re-unshelve' '
        test_when_finished cleanup_git &&
        (
                cd "$cli" &&
                change=$(last_shelved_change) &&
                echo "file3" >file3 &&
                p4 add -c $change file3 &&
                p4 shelve -i -r <<EOF &&
Change: $change
Description:
        Test commit

        Further description
Files:
        //depot/file1
        //depot/file2
        //depot/file3
        //depot/file_to_delete
EOF
                p4 describe $change
        ) &&
        (
                cd "$git" &&
                change=$(last_shelved_change) &&
                git p4 unshelve $change &&
                git diff refs/remotes/p4-unshelved/$change.0 refs/remotes/p4-unshelved/$change | grep -q file3
        )
'

shelve_one_file () {
        description="Change to be unshelved" &&
        file="$1" &&
        p4 shelve -i <<EOF
Change: new
Description:
        $description
Files:
        $file
EOF
}

# This is the tricky case where the shelved changelist base revision doesn't
# match git-p4's idea of the base revision
#
# We will attempt to unshelve a change that is based on a change one commit
# ahead of p4/master

test_expect_success 'create shelved changelist based on p4 change ahead of p4/master' '
        git p4 clone --dest="$git" //depot/@all &&
        (
                cd "$cli" &&
                p4 revert ... &&
                p4 edit file1 &&
                echo "foo" >>file1 &&
                p4 submit -d "change:foo" &&
                p4 edit file1 &&
                echo "bar" >>file1 &&
                shelve_one_file //depot/file1 &&
                change=$(last_shelved_change) &&
                p4 describe -S $change >out.txt &&
                grep -q "Change to be unshelved" out.txt
        )
'

# Now try to unshelve it.
test_expect_success 'try to unshelve the change' '
        test_when_finished cleanup_git &&
        (
                change=$(last_shelved_change) &&
                cd "$git" &&
                git p4 unshelve $change >out.txt &&
                grep -q "unshelved changelist $change" out.txt
        )
'

# Specify the origin. Create 2 unrelated files, and check that
# we only get the one in HEAD~, not the one in HEAD.

test_expect_success 'unshelve specifying the origin' '
        (
                cd "$cli" &&
                : >unrelated_file0 &&
                p4 add unrelated_file0 &&
                p4 submit -d "unrelated" &&
                : >unrelated_file1 &&
                p4 add unrelated_file1 &&
                p4 submit -d "unrelated" &&
                : >file_to_shelve &&
                p4 add file_to_shelve &&
                shelve_one_file //depot/file_to_shelve
        ) &&
        test_when_finished cleanup_git &&
        git p4 clone --dest="$git" //depot/@all &&
        (
                cd "$git" &&
                change=$(last_shelved_change) &&
                git p4 unshelve --origin HEAD~ $change &&
                git checkout refs/remotes/p4-unshelved/$change &&
                test_path_is_file unrelated_file0 &&
                test_path_is_missing unrelated_file1 &&
                test_path_is_file file_to_shelve
        )
'
test_expect_success 'kill p4d' '
        kill_p4d
'

test_done