/*
Copyright © 2024 Thomas von Dein

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/

package lib

import (
	"fmt"
	"reflect"
	"testing"

	"github.com/tlinden/tablizer/cfg"
)

func TestMatchPattern(t *testing.T) {
	var input = []struct {
		name    string
		fuzzy   bool
		pattern string
		line    string
	}{
		{
			name:    "normal",
			pattern: "haus",
			line:    "hausparty",
		},
		{
			name:    "fuzzy",
			pattern: "hpt",
			line:    "haus-party-termin",
			fuzzy:   true,
		},
	}

	for _, in := range input {
		testname := fmt.Sprintf("match-pattern-%s", in.name)

		t.Run(testname, func(t *testing.T) {
			c := cfg.Config{}

			if in.fuzzy {
				c.UseFuzzySearch = true
			}

			err := c.PreparePattern(in.pattern)
			if err != nil {
				t.Errorf("PreparePattern returned error: %s", err)
			}

			if !matchPattern(c, in.line) {
				t.Errorf("matchPattern() did not match\nExp: true\nGot: false\n")
			}
		})
	}

}

func TestFilterByFields(t *testing.T) {
	data := Tabdata{
		headers: []string{
			"ONE", "TWO", "THREE",
		},
		entries: [][]string{
			{"asd", "igig", "cxxxncnc"},
			{"19191", "EDD 1", "x"},
			{"8d8", "AN 1", "y"},
		},
	}

	var input = []struct {
		name   string
		filter []string
		expect Tabdata
		invert bool
	}{
		{
			name:   "one-field",
			filter: []string{"one=19"},
			expect: Tabdata{
				headers: []string{
					"ONE", "TWO", "THREE",
				},
				entries: [][]string{
					{"19191", "EDD 1", "x"},
				},
			},
		},

		{
			name:   "one-field-inverted",
			filter: []string{"one=19"},
			invert: true,
			expect: Tabdata{
				headers: []string{
					"ONE", "TWO", "THREE",
				},
				entries: [][]string{
					{"asd", "igig", "cxxxncnc"},
					{"8d8", "AN 1", "y"},
				},
			},
		},

		{
			name:   "many-fields",
			filter: []string{"one=19", "two=DD"},
			expect: Tabdata{
				headers: []string{
					"ONE", "TWO", "THREE",
				},
				entries: [][]string{
					{"19191", "EDD 1", "x"},
				},
			},
		},

		{
			name:   "many-fields-inverted",
			filter: []string{"one=19", "two=DD"},
			invert: true,
			expect: Tabdata{
				headers: []string{
					"ONE", "TWO", "THREE",
				},
				entries: [][]string{
					{"asd", "igig", "cxxxncnc"},
					{"8d8", "AN 1", "y"},
				},
			},
		},
	}

	for _, in := range input {
		testname := fmt.Sprintf("filter-by-fields-%s", in.name)

		t.Run(testname, func(t *testing.T) {
			c := cfg.Config{Rawfilters: in.filter, InvertMatch: in.invert}

			err := c.PrepareFilters()
			if err != nil {
				t.Errorf("PrepareFilters returned error: %s", err)
			}

			data, _, _ := FilterByFields(c, data)
			if !reflect.DeepEqual(data, in.expect) {
				t.Errorf("Filtered data does not match expected data:\ngot: %+v\nexp: %+v", data, in.expect)
			}
		})
	}

}