package publish

import (
	"strings"
	"testing"

	"gitea.maximumdirect.net/eric/distributor/internal/config"
	"gitea.maximumdirect.net/eric/distributor/internal/state"
)

func TestOutputURLUsesURLPathSemantics(t *testing.T) {
	tests := []struct {
		name                  string
		baseURL               string
		destinationBundlePath string
		outputPath            string
		want                  string
	}{
		{
			name:                  "nested non index",
			baseURL:               "https://reports.example.com/archive",
			destinationBundlePath: "daily/brentwood",
			outputPath:            "report.html",
			want:                  "https://reports.example.com/archive/daily/brentwood/report.html",
		},
		{
			name:                  "nested index",
			baseURL:               "https://reports.example.com/archive",
			destinationBundlePath: "daily/brentwood",
			outputPath:            "index.html",
			want:                  "https://reports.example.com/archive/daily/brentwood/",
		},
		{
			name:                  "fixed index",
			baseURL:               "https://reports.example.com/latest",
			destinationBundlePath: "",
			outputPath:            "index.html",
			want:                  "https://reports.example.com/latest/",
		},
		{
			name:                  "escaped segments",
			baseURL:               "https://reports.example.com/archive root",
			destinationBundlePath: "daily reports",
			outputPath:            "morning report.html",
			want:                  "https://reports.example.com/archive%20root/daily%20reports/morning%20report.html",
		},
		{
			name:                  "nested output index",
			baseURL:               "https://reports.example.com",
			destinationBundlePath: "daily",
			outputPath:            "site/index.html",
			want:                  "https://reports.example.com/daily/site/",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := OutputURL(tt.baseURL, tt.destinationBundlePath, tt.outputPath)
			if err != nil {
				t.Fatalf("OutputURL() error = %v", err)
			}
			if got != tt.want {
				t.Fatalf("OutputURL() = %q, want %q", got, tt.want)
			}
		})
	}
}

func TestPlanLinksSelectsPrimaryURL(t *testing.T) {
	outputs := []Output{
		{
			DestinationPath: "report.md",
			Kind:            state.OutputKindSource,
		},
		{
			DestinationPath: "report.html",
			Kind:            state.OutputKindGenerated,
		},
		{
			DestinationPath: "index.html",
			Kind:            state.OutputKindGenerated,
		},
	}
	tests := []struct {
		name    string
		primary string
		want    string
	}{
		{name: "auto prefers index", primary: config.LinkPrimaryAuto, want: "https://reports.example.com/daily/"},
		{name: "html uses first generated html", primary: config.LinkPrimaryHTML, want: "https://reports.example.com/daily/report.html"},
		{name: "source uses first source", primary: config.LinkPrimarySource, want: "https://reports.example.com/daily/report.md"},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			linked, primaryURL, err := PlanLinks(Request{
				DestinationBundlePath: "daily",
				Links: &config.Links{
					BaseURL: "https://reports.example.com",
					Primary: tt.primary,
				},
			}, outputs)
			if err != nil {
				t.Fatalf("PlanLinks() error = %v", err)
			}
			if primaryURL != tt.want {
				t.Fatalf("primary URL = %q, want %q", primaryURL, tt.want)
			}
			for index, output := range linked {
				if output.URL == "" {
					t.Fatalf("linked output %d has empty URL", index)
				}
			}
		})
	}
}

func TestPlanLinksReturnsNoPrimaryWhenPolicyHasNoMatch(t *testing.T) {
	linked, primaryURL, err := PlanLinks(Request{
		DestinationBundlePath: "daily",
		Links: &config.Links{
			BaseURL: "https://reports.example.com",
			Primary: config.LinkPrimaryHTML,
		},
	}, []Output{{
		DestinationPath: "report.md",
		Kind:            state.OutputKindSource,
	}})
	if err != nil {
		t.Fatalf("PlanLinks() error = %v", err)
	}
	if primaryURL != "" {
		t.Fatalf("primary URL = %q, want empty", primaryURL)
	}
	if linked[0].URL != "https://reports.example.com/daily/report.md" {
		t.Fatalf("linked URL = %q", linked[0].URL)
	}
}

func TestPlanLinksLeavesOutputsUnchangedWithoutConfig(t *testing.T) {
	outputs := []Output{{DestinationPath: "report.md", Kind: state.OutputKindSource}}
	linked, primaryURL, err := PlanLinks(Request{}, outputs)
	if err != nil {
		t.Fatalf("PlanLinks() error = %v", err)
	}
	if primaryURL != "" {
		t.Fatalf("primary URL = %q, want empty", primaryURL)
	}
	if linked[0].URL != "" {
		t.Fatalf("output URL = %q, want empty", linked[0].URL)
	}
}

func TestPlanLinksValidatesBaseURLBeforePlanning(t *testing.T) {
	_, _, err := PlanLinks(Request{
		DestinationBundlePath: "daily",
		Links: &config.Links{
			BaseURL: "https://reports.example.com/archive?preview=1",
			Primary: config.LinkPrimaryAuto,
		},
	}, []Output{{
		DestinationPath: "report.md",
		Kind:            state.OutputKindSource,
	}})
	if err == nil {
		t.Fatal("PlanLinks() error = nil, want error")
	}
	if !strings.Contains(err.Error(), "link base URL: must not include a query string") {
		t.Fatalf("PlanLinks() error = %q, want link base URL context", err)
	}
}