#!/bin/sh

die () { printf "$@" ; exit 1; }

\. ../../../nvm.sh

BASIC_VERSIONS='1.2.3
10.21.32
x.x.x
X.X.X
*.*.*
1.2
10.21
x.x
X.X
*.*
1
10
x
*
X'

SEMVER_OPERATORS='v
=
<
>
<=
>=
~
^'



# Dynamically generate list of semver expressions to test inside each package.json template.
# Each semver added to this list is paired with the expected output when executed with nvm_get_node_from_pkg_json.
# Most valid semvers will expecte the output to be the same as the input but there are some valid semvers with certain
# sequences of tabs/spaces whose outputs are slightly different from their inputs (documented below).

# Format for test cases is input and expected output separated by a colon
# INPUT:EXPECTED_OUTPUT
TEST_SEMVERS=''

BASIC_VERSIONS_COPY=$(echo "$BASIC_VERSIONS")
while [ -n "$BASIC_VERSIONS_COPY" ]; do
  BASIC_VERSION=$(echo "$BASIC_VERSIONS_COPY" | head -n1)
  BASIC_VERSIONS_COPY=$(echo "$BASIC_VERSIONS_COPY" | tail -n +2)

  # add test semver with just the version and no comparator
  TEST_SEMVERS="$TEST_SEMVERS
$BASIC_VERSION:$BASIC_VERSION"

  SEMVER_OPERATORS_COPY=$(echo "$SEMVER_OPERATORS")
  while [ -n "$SEMVER_OPERATORS_COPY" ]; do
    SEMVER_OPERATOR=$(echo "$SEMVER_OPERATORS_COPY" | head -n1)
    SEMVER_OPERATORS_COPY=$(echo "$SEMVER_OPERATORS_COPY" | tail -n +2)

    # add test semver with version adjacent to operator
    # add test semver with version separated from operator by one space
    TEST_SEMVERS="$TEST_SEMVERS
$SEMVER_OPERATOR$BASIC_VERSION:$SEMVER_OPERATOR$BASIC_VERSION
$SEMVER_OPERATOR $BASIC_VERSION:$SEMVER_OPERATOR $BASIC_VERSION"
  done
done

# add valid basic test semvers with hyphen ranges
TEST_SEMVERS="$TEST_SEMVERS
1.2.3 - 1.2.4:1.2.3 - 1.2.4
10.21.32 - 10.21.33:10.21.32 - 10.21.33
1.2 - 1.3:1.2 - 1.3
10.21 - 10.22:10.21 - 10.22
1 - 2:1 - 2
10 - 11:10 - 11"

# add more complex test semvers with just one comparator set
TEST_SEMVERS="$TEST_SEMVERS
1.2.3 1.2.4:1.2.3 1.2.4
1.2 1.3:1.2 1.3
1 2:1 2
>1.2.3 <=1.3.0:>1.2.3 <=1.3.0"

# add test semvers with multiple comparator sets
TEST_SEMVERS="$TEST_SEMVERS
1.2.3 || 1.2.4:1.2.3 || 1.2.4
1.2 || 1.3:1.2 || 1.3
1 || 2:1 || 2"

# add test semvers that will be successfully extracted from package.json
# but will be marked invalid upon going through nvm_validate_semver
TEST_SEMVERS="$TEST_SEMVERS
1.2.3||1.2.4:1.2.3||1.2.4
1.2||1.3:1.2||1.3
1||2:1||2
<1.2.3>:<1.2.3>
<1.2>:<1.2>
<1>:<1>
>>1:>>1
<<1:<<1
==1:==1
**:**
xx:xx
^^1:^^1
~~1:~~1
1.2.3-1.2.4:1.2.3-1.2.4
10.21.32-10.21.33:10.21.32-10.21.33
1.2-1.3:1.2-1.3
10.21-10.22:10.21-10.22
1-2:1-2
10-11:10-11"

# add test semvers with tabs inside them
# These semvers are intended to:
# - validate that semvers can include tabs
# - validate that all tabs or consecutive tabs are reduced to one space
# - validate that leading trailing spaces and tabs are removed
TEST_SEMVERS="$TEST_SEMVERS
 1		1 :1 1
	2	2	:2 2"


# POSITIVE TEST CASES


# (TEST SET #1) uses valid TEST_SEMVER's and valid package.json templates
TEST_SEMVERS_COPY=$(echo "$TEST_SEMVERS")
PREV_TEST_SEMVER=''
for TEMPLATE_NAME in package_json_templates/_valid_*; do
  while [ -n "$TEST_SEMVERS_COPY" ]; do
    LINE=$(echo "$TEST_SEMVERS_COPY" | head -n1)
    TEST_SEMVERS_COPY=$(echo "$TEST_SEMVERS_COPY" | tail -n +2)
    [ -n "$LINE" ] || continue
    TEST_SEMVER_INPUT=$(echo "$LINE" | awk -F: '{ print $1 }')
    EXPECTED_OUTPUT=$(echo "$LINE" | awk -F: '{ print $2 }')

    if [ "$PREV_TEST_SEMVER" == "$TEST_SEMVER_INPUT" ]; then
      die "Problem iterating through TEST_SEMVERS_COPY (TEST SET #1). Encountered the same value twice in a row. PREV_TEST_SEMVER='$PREV_TEST_SEMVER' TEST_SEMVER_INPUT='$TEST_SEMVER_INPUT'.\n"
    fi
    PREV_TEST_SEMVER=$(printf "%s" "$TEST_SEMVER_INPUT")

    PKG_JSON_CONTENTS=$(sed 's/NODE_SEMVER/'"$TEST_SEMVER_INPUT"'/g' "$TEMPLATE_NAME" | tail -n +3)
    ACTUAL_OUTPUT=$(nvm_get_node_from_pkg_json "$PKG_JSON_CONTENTS")

    if [ "$ACTUAL_OUTPUT" != "$EXPECTED_OUTPUT" ] || [ -z "$ACTUAL_OUTPUT" ] || [ -z "$PKG_JSON_CONTENTS" ]; then
      die "'nvm_get_node_from_pkg_json' POSITIVE test case failed (TEST SET #1). Expected '$EXPECTED_OUTPUT' but got '$ACTUAL_OUTPUT' when given input template '$TEMPLATE_NAME':\n$PKG_JSON_CONTENTS"
    fi
  done
done


# NEGATIVE TEST CASES


# (TEST SET #2) uses valid TEST_SEMVER's but invalid package.json templates
TEST_SEMVERS_COPY=$(echo "$TEST_SEMVERS")
PREV_TEST_SEMVER=''
for TEMPLATE_NAME in package_json_templates/_invalid_*; do
  while [ -n "$TEST_SEMVERS_COPY" ]; do
    LINE=$(echo "$TEST_SEMVERS_COPY" | head -n1)
    TEST_SEMVERS_COPY=$(echo "$TEST_SEMVERS_COPY" | tail -n +2)
    [ -n "$LINE" ] || continue
    TEST_SEMVER_INPUT=$(echo "$LINE" | awk -F: '{ print $1 }')

    if [ "$PREV_TEST_SEMVER" == "$TEST_SEMVER_INPUT" ]; then
      die "Problem iterating through TEST_SEMVERS_COPY (TEST SET #2). Encountered the same value twice in a row. PREV_TEST_SEMVER='$PREV_TEST_SEMVER' TEST_SEMVER_INPUT='$TEST_SEMVER_INPUT'.\n"
    fi
    PREV_TEST_SEMVER=$(printf "%s" "$TEST_SEMVER_INPUT")

    PKG_JSON_CONTENTS=$(sed 's/NODE_SEMVER/'"$TEST_SEMVER_INPUT"'/g' "$TEMPLATE_NAME" | tail -n +3)
    ACTUAL_OUTPUT=$(nvm_get_node_from_pkg_json "$PKG_JSON_CONTENTS")

    if [ "$ACTUAL_OUTPUT" != "" ] || [ -z "$TEST_SEMVER_INPUT" ] || [ -z "$PKG_JSON_CONTENTS" ]; then
      die "'nvm_get_node_from_pkg_json' NEGATIVE test case failed (TEST SET #2). Expected to get empty string but got '$ACTUAL_OUTPUT' when given input template '$TEMPLATE_NAME':\n$PKG_JSON_CONTENTS"
    fi
  done
done


# invalid test semvers
TEST_SEMVERS='&1
@1
#1
$1
%s
1)
1(
1_
1+
1]
1[
1"
1:
1?
1`
1!'

# (TEST SET #3) uses invalid TEST_SEMVER's but valid package.json templates
TEST_SEMVERS_COPY=$(echo "$TEST_SEMVERS")
PREV_TEST_SEMVER=''
for TEMPLATE_NAME in package_json_templates/_valid_*; do
  while [ -n "$TEST_SEMVERS_COPY" ]; do
    TEST_SEMVER_INPUT=$(echo "$TEST_SEMVERS_COPY" | head -n1)
    [ -n "$TEST_SEMVER_INPUT" ] || continue
    TEST_SEMVERS_COPY=$(echo "$TEST_SEMVERS_COPY" | tail -n +2)

    if [ "$PREV_TEST_SEMVER" == "$TEST_SEMVER_INPUT" ]; then
      die "Problem iterating through TEST_SEMVERS_COPY (TEST SET #3). Encountered the same value twice in a row. PREV_TEST_SEMVER='$PREV_TEST_SEMVER' TEST_SEMVER_INPUT='$TEST_SEMVER_INPUT'.\n"
    fi
    PREV_TEST_SEMVER=$(printf "%s" "$TEST_SEMVER_INPUT")

    PKG_JSON_CONTENTS=$(sed 's/NODE_SEMVER/'"$TEST_SEMVER_INPUT"'/g' "$TEMPLATE_NAME" | tail -n +3)
    ACTUAL_OUTPUT=$(nvm_get_node_from_pkg_json "$PKG_JSON_CONTENTS")

    if [ "$ACTUAL_OUTPUT" != "" ] || [ -z "$TEST_SEMVER_INPUT" ] || [ -z "$PKG_JSON_CONTENTS" ]; then
      die "'nvm_get_node_from_pkg_json' NEGATIVE test case failed (TEST SET #3). Expected to get empty string but got '$ACTUAL_OUTPUT' when given input template '$TEMPLATE_NAME':\n$PKG_JSON_CONTENTS"
    fi
  done
done

# (TEST SET #4) uses invalid TEST_SEMVER's and invalid package.json templates
TEST_SEMVERS_COPY=$(echo "$TEST_SEMVERS")
PREV_TEST_SEMVER=''
for TEMPLATE_NAME in package_json_templates/_invalid_*; do
  while [ -n "$TEST_SEMVERS_COPY" ]; do
    TEST_SEMVER_INPUT=$(echo "$TEST_SEMVERS_COPY" | head -n1)
    [ -n "$TEST_SEMVER_INPUT" ] || continue
    TEST_SEMVERS_COPY=$(echo "$TEST_SEMVERS_COPY" | tail -n +2)

    if [ "$PREV_TEST_SEMVER" == "$TEST_SEMVER_INPUT" ]; then
      die "Problem iterating through TEST_SEMVERS_COPY (TEST SET #4). Encountered the same value twice in a row. PREV_TEST_SEMVER='$PREV_TEST_SEMVER' TEST_SEMVER_INPUT='$TEST_SEMVER_INPUT'.\n"
    fi
    PREV_TEST_SEMVER=$(printf "%s" "$TEST_SEMVER_INPUT")

    PKG_JSON_CONTENTS=$(sed 's/NODE_SEMVER/'"$TEST_SEMVER_INPUT"'/g' "$TEMPLATE_NAME" | tail -n +3)
    ACTUAL_OUTPUT=$(nvm_get_node_from_pkg_json "$PKG_JSON_CONTENTS")

    if [ "$ACTUAL_OUTPUT" != "" ] || [ -z "$TEST_SEMVER_INPUT" ] || [ -z "$PKG_JSON_CONTENTS" ]; then
      die "'nvm_get_node_from_pkg_json' NEGATIVE test case failed (TEST SET #4). Expected to get empty string but got '$ACTUAL_OUTPUT' when given input template '$TEMPLATE_NAME':\n$PKG_JSON_CONTENTS"
    fi
  done
done