package emulator

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

//nolint:goconst
func TestProcessSessionInput(t *testing.T) {
	t.Parallel()

	tests := map[string]struct {
		input string

		command    string
		opts       CommandOpts
		errChecker assert.ErrorAssertionFunc
	}{
		"No Options": {
			input:      "echo hello",
			command:    "echo hello",
			opts:       CommandOpts{},
			errChecker: assert.NoError,
		},
		"With options": {
			input:      "echo hello " + sendOptionsSplitter + ` > file.txt`,
			command:    "echo hello ", // Notice trailing space
			opts:       CommandOpts{FileRedirection: "file.txt"},
			errChecker: assert.NoError,
		},
		"Empty Options": {
			input:   `echo hello ` + sendOptionsSplitter + ` `,
			command: "echo hello ",
			opts:    CommandOpts{},
			// TODO confirm error type/value
			errChecker: assert.Error,
		},
		"Unknown option type": {
			input:      `echo hello ` + sendOptionsSplitter + ` | file.txt`,
			command:    "echo hello ",
			opts:       CommandOpts{},
			errChecker: assert.Error,
		},
		"Too many options": {
			input:      `echo hello ` + sendOptionsSplitter + ` > file.txt help`,
			command:    "echo hello ",
			opts:       CommandOpts{},
			errChecker: assert.Error,
		},
		"Too few options": {
			input:      `echo hello ` + sendOptionsSplitter + ` > `,
			command:    "echo hello ",
			opts:       CommandOpts{},
			errChecker: assert.Error,
		},
		"Invalid command": {
			// Command includes an incomplete quote
			// Currently the split on the separator is done first, and then options
			// validation is carried out, without validating command, so this passes
			// Command validation is expected later on, e.g. in cliservices
			input:      `echo "hello ` + sendOptionsSplitter + ` > file.txt`,
			command:    `echo "hello `,
			opts:       CommandOpts{FileRedirection: "file.txt"},
			errChecker: assert.NoError,
		},
		"Invalid options": {
			// Options include an incomplete quote
			// Options are validated so we would expect an error returned here.
			input:      `echo hello ` + sendOptionsSplitter + ` > "file.txt`,
			command:    `echo hello `,
			opts:       CommandOpts{},
			errChecker: assert.Error,
		},
		"homonym": {
			// It looks the same but isn't
			input:      `echo hello ` + `||||` + ` > file.txt`,
			command:    `echo hello |||| > file.txt`,
			opts:       CommandOpts{},
			errChecker: assert.NoError,
		},
	}

	for name, tc := range tests {
		tc := tc
		t.Run(name, func(t *testing.T) {
			command, opts, err := processSessionInput(tc.input)
			tc.errChecker(t, err)

			assert.Equal(t, tc.command, command)
			assert.Equal(t, tc.opts, opts)
		})
	}
}