package edgevalidate

import (
	"strings"
	"testing"

	"iop/packages/go/config"
)

func TestValidateEdgeConfigProviderAdapterReferences(t *testing.T) {
	tests := []struct {
		name    string
		node    config.NodeDefinition
		wantErr string
	}{
		{
			name: "valid exact openai compat instance",
			node: config.NodeDefinition{
				ID:    "node-1",
				Token: "tok",
				Adapters: config.AdaptersConf{
					OpenAICompatInstances: []config.OpenAICompatInstanceConf{
						{Name: "vllm-gpu", Enabled: true, Endpoint: "http://127.0.0.1:8000/v1"},
					},
				},
				Providers: []config.NodeProviderConf{
					{ID: "prov-vllm", Type: "vllm", Category: config.CategoryAPI, Adapter: "vllm-gpu"},
				},
			},
		},
		{
			name: "valid single type route",
			node: config.NodeDefinition{
				ID:    "node-1",
				Token: "tok",
				Adapters: config.AdaptersConf{
					OpenAICompatInstances: []config.OpenAICompatInstanceConf{
						{Name: "vllm-gpu", Enabled: true, Endpoint: "http://127.0.0.1:8000/v1"},
					},
				},
				Providers: []config.NodeProviderConf{
					{ID: "prov-vllm", Type: "vllm", Category: config.CategoryAPI, Adapter: "openai_compat"},
				},
			},
		},
		{
			name: "missing adapter rejected",
			node: config.NodeDefinition{
				ID:    "node-1",
				Token: "tok",
				Adapters: config.AdaptersConf{
					CLI: config.CLIConf{Enabled: true},
				},
				Providers: []config.NodeProviderConf{
					{ID: "prov-vllm", Type: "vllm", Category: config.CategoryAPI, Adapter: "missing"},
				},
			},
			wantErr: "does not resolve",
		},
		{
			name: "disabled instance rejected",
			node: config.NodeDefinition{
				ID:    "node-1",
				Token: "tok",
				Adapters: config.AdaptersConf{
					CLI: config.CLIConf{Enabled: true},
					OpenAICompatInstances: []config.OpenAICompatInstanceConf{
						{Name: "vllm-gpu", Enabled: false, Endpoint: "http://127.0.0.1:8000/v1"},
					},
				},
				Providers: []config.NodeProviderConf{
					{ID: "prov-vllm", Type: "vllm", Category: config.CategoryAPI, Adapter: "vllm-gpu"},
				},
			},
			wantErr: "does not resolve",
		},
		{
			name: "ambiguous type route rejected",
			node: config.NodeDefinition{
				ID:    "node-1",
				Token: "tok",
				Adapters: config.AdaptersConf{
					OpenAICompatInstances: []config.OpenAICompatInstanceConf{
						{Name: "vllm-a", Enabled: true, Endpoint: "http://127.0.0.1:8000/v1"},
						{Name: "vllm-b", Enabled: true, Endpoint: "http://127.0.0.1:8001/v1"},
					},
				},
				Providers: []config.NodeProviderConf{
					{ID: "prov-vllm", Type: "vllm", Category: config.CategoryAPI, Adapter: "openai_compat"},
				},
			},
			wantErr: "ambiguous",
		},
		{
			name: "cli resource requires enabled cli",
			node: config.NodeDefinition{
				ID:    "node-1",
				Token: "tok",
				Adapters: config.AdaptersConf{
					OllamaInstances: []config.OllamaInstanceConf{
						{Name: "ollama-local", Enabled: true, BaseURL: "http://127.0.0.1:11434"},
					},
				},
				Providers: []config.NodeProviderConf{
					{ID: "cli-codex", Type: "cli", Category: config.CategoryCLI, Adapter: "cli"},
				},
			},
			wantErr: "category cli requires enabled cli adapter",
		},
		{
			name: "valid cli resource",
			node: config.NodeDefinition{
				ID:    "node-1",
				Token: "tok",
				Adapters: config.AdaptersConf{
					CLI: config.CLIConf{Enabled: true},
				},
				Providers: []config.NodeProviderConf{
					{ID: "cli-codex", Type: "cli", Category: config.CategoryCLI, Adapter: "cli"},
				},
			},
		},
	}

	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {
			err := ValidateEdgeConfig(&config.EdgeConfig{Nodes: []config.NodeDefinition{tc.node}})
			if tc.wantErr == "" {
				if err != nil {
					t.Fatalf("ValidateEdgeConfig: %v", err)
				}
				return
			}
			if err == nil {
				t.Fatalf("expected error containing %q", tc.wantErr)
			}
			if !strings.Contains(err.Error(), tc.wantErr) {
				t.Fatalf("expected error containing %q, got %v", tc.wantErr, err)
			}
		})
	}
}

func TestValidateEdgeConfigProviderAdapterEmptyRejected(t *testing.T) {
	cfg := &config.EdgeConfig{
		Nodes: []config.NodeDefinition{
			{
				ID:    "node-1",
				Token: "tok",
				Adapters: config.AdaptersConf{
					CLI: config.CLIConf{Enabled: true},
				},
				Providers: []config.NodeProviderConf{
					{ID: "prov-empty", Type: "cli", Category: config.CategoryCLI, Adapter: " "},
				},
			},
		},
	}

	err := ValidateEdgeConfig(cfg)
	if err == nil {
		t.Fatal("expected empty adapter error")
	}
	if !strings.Contains(err.Error(), "adapter must not be empty") {
		t.Fatalf("expected adapter empty error, got %v", err)
	}
}