package cli

import (
	"os"
	"path/filepath"
	"testing"

	"github.com/anomalyco/opencode-provider-switch/internal/config"
)

func TestProviderAddPreservesExistingFields(t *testing.T) {
	t.Setenv("OPS_CONFIG", filepath.Join(t.TempDir(), "ops.json"))
	configPath = ""

	cfg, err := loadCfg()
	if err != nil {
		t.Fatalf("loadCfg: %v", err)
	}
	cfg.UpsertProvider(config.Provider{
		ID:      "p1",
		Name:    "Old",
		BaseURL: "https://old.example.com/v1",
		APIKey:  "sk-old",
		Headers: map[string]string{"X-Test": "1"},
	})
	if err := cfg.Save(); err != nil {
		t.Fatalf("save config: %v", err)
	}

	cmd := newProviderAddCmd()
	cmd.SetArgs([]string{"--id", "p1", "--base-url", "https://new.example.com/v1"})
	if err := cmd.Execute(); err != nil {
		t.Fatalf("execute provider add: %v", err)
	}

	cfg, err = loadCfg()
	if err != nil {
		t.Fatalf("reload config: %v", err)
	}
	p := cfg.FindProvider("p1")
	if p == nil {
		t.Fatal("provider p1 not found")
	}
	if p.Name != "Old" {
		t.Fatalf("Name = %q, want Old", p.Name)
	}
	if p.APIKey != "sk-old" {
		t.Fatalf("APIKey = %q, want sk-old", p.APIKey)
	}
	if p.Headers["X-Test"] != "1" {
		t.Fatalf("Headers = %#v, want preserved header", p.Headers)
	}
	if p.BaseURL != "https://new.example.com/v1" {
		t.Fatalf("BaseURL = %q, want updated URL", p.BaseURL)
	}
}

func TestProviderAddRejectsInvalidBaseURL(t *testing.T) {
	configFile := filepath.Join(t.TempDir(), "ops.json")
	t.Setenv("OPS_CONFIG", configFile)
	configPath = ""

	cmd := newProviderAddCmd()
	cmd.SetArgs([]string{"--id", "p1", "--base-url", "https://example.com/api"})
	err := cmd.Execute()
	if err == nil {
		t.Fatal("expected invalid --base-url error")
	}
	if got := err.Error(); got != "invalid --base-url: base_url must end with /v1" {
		t.Fatalf("error = %q", got)
	}
	if _, statErr := os.Stat(configFile); !os.IsNotExist(statErr) {
		t.Fatalf("expected no config file write, stat err = %v", statErr)
	}
}

func TestAliasAddPreservesExistingFields(t *testing.T) {
	t.Setenv("OPS_CONFIG", filepath.Join(t.TempDir(), "ops.json"))
	configPath = ""

	cfg, err := loadCfg()
	if err != nil {
		t.Fatalf("loadCfg: %v", err)
	}
	cfg.UpsertAlias(config.Alias{
		Alias:       "gpt-5.4",
		DisplayName: "Old Name",
		Enabled:     true,
		Targets:     []config.Target{{Provider: "p1", Model: "up-1", Enabled: true}},
	})
	if err := cfg.Save(); err != nil {
		t.Fatalf("save config: %v", err)
	}

	cmd := newAliasAddCmd()
	cmd.SetArgs([]string{"--name", "gpt-5.4"})
	if err := cmd.Execute(); err != nil {
		t.Fatalf("execute alias add: %v", err)
	}

	cfg, err = loadCfg()
	if err != nil {
		t.Fatalf("reload config: %v", err)
	}
	a := cfg.FindAlias("gpt-5.4")
	if a == nil {
		t.Fatal("alias gpt-5.4 not found")
	}
	if a.DisplayName != "Old Name" {
		t.Fatalf("DisplayName = %q, want Old Name", a.DisplayName)
	}
	if !a.Enabled {
		t.Fatal("Enabled = false, want true")
	}
	if len(a.Targets) != 1 || a.Targets[0].Provider != "p1" || a.Targets[0].Model != "up-1" {
		t.Fatalf("Targets = %#v, want preserved target", a.Targets)
	}
}