# Test the `argparse` builtin.

##########
# Start by verifying a bunch of error conditions.

echo '# No args is an error' >&2
argparse

echo '# Missing -- is an error' >&2
argparse h/help

echo '# Flags but no option specs is an error' >&2
argparse -s -- hello

echo '# Invalid option specs' >&2
argparse h-
argparse +help
argparse h/help:
argparse h-help::
argparse h-help=x

echo '# --max-args and --min-args work' >&2
begin
    argparse --name min-max --min-args 1 h/help --
    argparse --name min-max --min-args 1 --max-args 3 h/help -- arg1
    argparse --name min-max --min-args 1 --max-args 3 h/help -- arg1 arg2
    argparse --name min-max --min-args 1 --max-args 3 h/help -- --help arg1 arg2 arg3
    argparse --name min-max --min-args 1 --max-args 3 h/help -- arg1 arg2 -h arg3 arg4
    argparse --name min-max --max-args 1 h/help --
    argparse --name min-max --max-args 1 h/help -- arg1
    argparse --name min-max --max-args 1 h/help -- arg1 arg2
end

echo '# Invalid "#-val" spec' >&2
argparse '#-val=' -- abc -x def

echo '# Invalid arg in the face of a "#-val" spec' >&2
argparse '#-val' -- abc -x def

echo '# Defining a short flag more than once' >&2
argparse 's/short' 'x/xray' 's/long' -- -s -x --long

echo '# Defining a long flag more than once' >&2
argparse 's/short' 'x/xray' 'l/short' -- -s -x --long

echo '# Defining an implicit int flag more than once' >&2
argparse '#-val' 'x/xray' 'v#val' -- -s -x --long

echo '# Defining an implicit int flag with modifiers' >&2
argparse 'v#val=' --

##########
# Now verify that validly formed invocations work as expected.

echo '# No args'
argparse h/help --

echo '# One arg and no matching flags'
begin
    argparse h/help -- help
    set -l
end

echo '# Five args with two matching a flag'
begin
    argparse h/help -- help --help me -h 'a lot more'
    set -l
end

echo '# Required, optional, and multiple flags'
begin
    argparse 'h/help' 'a/abc=' 'd/def=?' 'g/ghk=+' -- help --help me --ghk=g1 --abc=ABC --ghk g2 --d -g g3
    set -l
end

echo '# --stop-nonopt works'
begin
    argparse --stop-nonopt 'h/help' 'a/abc=' -- -a A1 -h --abc A2 non-opt 'second non-opt' --help
    set -l
end

echo '# Implicit int flags work'
for v in (set -l -n); set -e $v; end
argparse '#-val' -- abc -123 def
set -l
for v in (set -l -n); set -e $v; end
argparse 'v/verbose' '#-val' 't/token=' -- -123 a1 --token woohoo --234 -v a2 --verbose
set -l

echo '# Should be set to 987'
for v in (set -l -n); set -e $v; end
argparse 'm#max' -- argle -987 bargle
set -l

echo '# Should be set to 765'
for v in (set -l -n); set -e $v; end
argparse 'm#max' -- argle -987 bargle --max 765
set -l

echo '# Bool short flag only'
for v in (set -l -n); set -e $v; end
argparse 'C' 'v' -- -C -v arg1 -v arg2
set -l

echo '# Value taking short flag only'
for v in (set -l -n); set -e $v; end
argparse 'x=' 'v/verbose' -- --verbose arg1 -v -x arg2
set -l

echo '# Implicit int short flag only'
for v in (set -l -n); set -e $v; end
argparse 'x#' 'v/verbose' -- -v -v argle -v -x 321 bargle
set -l

echo '# Implicit int short flag only with custom validation passes'
for v in (set -l -n); set -e $v; end
argparse 'x#!_validate_int --max 500' 'v/verbose' -- -v -v -x 499 -v
set -l

echo '# Implicit int short flag only with custom validation fails' >&2
for v in (set -l -n); set -e $v; end
argparse 'x#!_validate_int --min 500' 'v/verbose' -- -v -v -x 499 -v
set -l

##########
# Verify that flag value validation works.

echo '# Implicit int flag validation fails' >&2
argparse 'm#max' -- argle --max 765x bargle
and echo unxpected argparse return status >&2
argparse 'm#max' -- argle -ma1 bargle
and echo unxpected argparse return status >&2

echo '# Check the exit status from argparse validation'
argparse 'm#max!set | grep _flag_; function x; return 57; end; x' -- argle --max=83 bargle 2>&1
set -l saved_status $status
test $saved_status -eq 57
and echo expected argparse return status $saved_status

echo '# Explicit int flag validation' >&2
# These should fail
argparse 'm#max!_validate_int --min 1 --max 1' -- argle -m2 bargle
and echo unexpected argparse return status $status >&2
argparse 'm#max!_validate_int --min 0 --max 1' -- argle --max=-1 bargle
and echo unexpected argparse return status $status >&2
# These should succeed
argparse 'm/max=!_validate_int --min 0 --max 1' -- argle --max=0 bargle
or echo unexpected argparse return status $status >&2
argparse 'm/max=!_validate_int --min 0 --max 1' -- argle --max=1 bargle
or echo unexpected argparse return status $status >&2