package main

import (
	"encoding/json"
	"net/http/httptest"
	"strings"
	"testing"
)

func TestCustomSlugCreateAndFetch(t *testing.T) {
	s := testServer(t)
	h := s.routes()

	req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(`{"content":"x","custom_slug":"release-notes"}`))
	rec := httptest.NewRecorder()
	h.ServeHTTP(rec, req)
	if rec.Code != 201 {
		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
	}

	// fetch by custom slug
	req = httptest.NewRequest("GET", "/api/pastes/release-notes", nil)
	rec = httptest.NewRecorder()
	h.ServeHTTP(rec, req)
	if rec.Code != 200 {
		t.Fatalf("fetch by slug: %d", rec.Code)
	}
	var got map[string]any
	json.Unmarshal(rec.Body.Bytes(), &got)
	if got["content"] != "x" {
		t.Fatal("content mismatch via custom slug")
	}
}

func TestCustomSlugValidation(t *testing.T) {
	s := testServer(t)
	h := s.routes()

	cases := []struct {
		slug, body string
		wantCode   int
	}{
		{"dup", `{"content":"first","custom_slug":"dup"}`, 201},
		{"dup", `{"content":"second","custom_slug":"dup"}`, 400},
		{"api", `{"content":"x","custom_slug":"api"}`, 400},
		{"raw", `{"content":"x","custom_slug":"raw"}`, 400},
		{"bad slug", `{"content":"x","custom_slug":"has space"}`, 400},
		{"", `{"content":"x","custom_slug":""}`, 201}, // empty = no custom slug, fine
	}
	for i, c := range cases {
		req := httptest.NewRequest("POST", "/api/pastes", strings.NewReader(c.body))
		req.RemoteAddr = "10.7.1." + string(rune('1'+i)) + ":1000" // avoid rate-limit bucket sharing
		rec := httptest.NewRecorder()
		h.ServeHTTP(rec, req)
		if rec.Code != c.wantCode {
			t.Fatalf("slug %q: got %d want %d: %s", c.slug, rec.Code, c.wantCode, rec.Body.String())
		}
	}
}

func TestSlugCollisionWithAutoID(t *testing.T) {
	s := testServer(t)
	// manually insert a paste, then try to claim its auto ID as a custom slug
	p, err := s.store.CreatePaste(&Paste{Content: "auto"})
	if err != nil {
		t.Fatal(err)
	}
	if taken, _ := s.store.SlugTaken(p.ID); !taken {
		t.Fatal("auto id should be claimed")
	}
}