package main

import (
	"reflect"
	"testing"

	"github.com/bvieira/sv4git/v2/sv"
)

func Test_merge(t *testing.T) {
	boolFalse := false
	boolTrue := true
	emptyStr := ""
	nonEmptyStr := "something"

	tests := []struct {
		name    string
		dst     Config
		src     Config
		want    Config
		wantErr bool
	}{
		{"overwrite string", Config{Version: "a"}, Config{Version: "b"}, Config{Version: "b"}, false},
		{"default string", Config{Version: "a"}, Config{Version: ""}, Config{Version: "a"}, false},

		{"overwrite list", Config{Branches: sv.BranchesConfig{Skip: []string{"a", "b"}}}, Config{Branches: sv.BranchesConfig{Skip: []string{"c", "d"}}}, Config{Branches: sv.BranchesConfig{Skip: []string{"c", "d"}}}, false},
		{"overwrite list with empty", Config{Branches: sv.BranchesConfig{Skip: []string{"a", "b"}}}, Config{Branches: sv.BranchesConfig{Skip: make([]string, 0)}}, Config{Branches: sv.BranchesConfig{Skip: make([]string, 0)}}, false},
		{"default list", Config{Branches: sv.BranchesConfig{Skip: []string{"a", "b"}}}, Config{Branches: sv.BranchesConfig{Skip: nil}}, Config{Branches: sv.BranchesConfig{Skip: []string{"a", "b"}}}, false},

		{"overwrite pointer bool false", Config{Branches: sv.BranchesConfig{SkipDetached: &boolFalse}}, Config{Branches: sv.BranchesConfig{SkipDetached: &boolTrue}}, Config{Branches: sv.BranchesConfig{SkipDetached: &boolTrue}}, false},
		{"overwrite pointer bool true", Config{Branches: sv.BranchesConfig{SkipDetached: &boolTrue}}, Config{Branches: sv.BranchesConfig{SkipDetached: &boolFalse}}, Config{Branches: sv.BranchesConfig{SkipDetached: &boolFalse}}, false},
		{"default pointer bool", Config{Branches: sv.BranchesConfig{SkipDetached: &boolTrue}}, Config{Branches: sv.BranchesConfig{SkipDetached: nil}}, Config{Branches: sv.BranchesConfig{SkipDetached: &boolTrue}}, false},

		{"merge maps", Config{CommitMessage: sv.CommitMessageConfig{Footer: map[string]sv.CommitMessageFooterConfig{"issue": {Key: "jira"}}}}, Config{CommitMessage: sv.CommitMessageConfig{Footer: map[string]sv.CommitMessageFooterConfig{"issue2": {Key: "jira2"}}}}, Config{CommitMessage: sv.CommitMessageConfig{Footer: map[string]sv.CommitMessageFooterConfig{"issue": {Key: "jira"}, "issue2": {Key: "jira2"}}}}, false},
		{"default maps", Config{CommitMessage: sv.CommitMessageConfig{Footer: map[string]sv.CommitMessageFooterConfig{"issue": {Key: "jira"}}}}, Config{CommitMessage: sv.CommitMessageConfig{Footer: nil}}, Config{CommitMessage: sv.CommitMessageConfig{Footer: map[string]sv.CommitMessageFooterConfig{"issue": {Key: "jira"}}}}, false},
		{"merge empty maps", Config{CommitMessage: sv.CommitMessageConfig{Footer: map[string]sv.CommitMessageFooterConfig{"issue": {Key: "jira"}}}}, Config{CommitMessage: sv.CommitMessageConfig{Footer: map[string]sv.CommitMessageFooterConfig{}}}, Config{CommitMessage: sv.CommitMessageConfig{Footer: map[string]sv.CommitMessageFooterConfig{"issue": {Key: "jira"}}}}, false},

		{"overwrite release notes header", Config{ReleaseNotes: sv.ReleaseNotesConfig{Headers: map[string]string{"a": "aa"}}}, Config{ReleaseNotes: sv.ReleaseNotesConfig{Headers: map[string]string{"b": "bb"}}}, Config{ReleaseNotes: sv.ReleaseNotesConfig{Headers: map[string]string{"b": "bb"}}}, false},

		{"overwrite tag config", Config{Version: "a", Tag: sv.TagConfig{Pattern: &nonEmptyStr, Filter: &nonEmptyStr}}, Config{Version: "", Tag: sv.TagConfig{Pattern: &emptyStr, Filter: &emptyStr}}, Config{Version: "a", Tag: sv.TagConfig{Pattern: &emptyStr, Filter: &emptyStr}}, false},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if err := merge(&tt.dst, tt.src); (err != nil) != tt.wantErr {
				t.Errorf("merge() error = %v, wantErr %v", err, tt.wantErr)
			}
			if !reflect.DeepEqual(tt.dst, tt.want) {
				t.Errorf("merge() = %v, want %v", tt.dst, tt.want)
			}
		})
	}
}
