package config_test

import (
	"strings"
	"testing"

	"gitea.maximumdirect.net/eric/weatherreporter/internal/config"
	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
	"gitea.maximumdirect.net/eric/weatherreporter/internal/report"
)

func TestConstructedReportOverridesUseExportedFields(t *testing.T) {
	cfg := config.Defaults()
	cfg.Reports = map[string]config.ReportConfig{
		"daily": {
			DeterministicModules: []config.ModuleConfigItem{
				{ID: module.Metadata},
				{ID: module.AreaForecastDiscussion},
			},
			Distributor: config.ReportDistributorConfig{
				PathTemplates: []string{"daily/{valid_start_date}/index.md"},
			},
		},
	}

	if err := config.Validate(cfg); err != nil {
		t.Fatalf("Validate() error = %v", err)
	}
	modules, err := cfg.ReportModuleOverrides()
	if err != nil {
		t.Fatalf("ReportModuleOverrides() error = %v", err)
	}
	if got := modules[report.Daily]; len(got) != 2 || got[0].ID != module.Metadata || got[1].ID != module.AreaForecastDiscussion {
		t.Fatalf("module override = %#v, want exported daily modules", got)
	}
	paths, err := cfg.ReportDistributorPathOverrides()
	if err != nil {
		t.Fatalf("ReportDistributorPathOverrides() error = %v", err)
	}
	if got := paths[report.Daily]; len(got) != 1 || got[0] != "daily/{valid_start_date}/index.md" {
		t.Fatalf("path override = %#v, want exported daily path", got)
	}
}

func TestConstructedExplicitEmptyReportOverridesAreRejected(t *testing.T) {
	tests := []struct {
		name    string
		report  config.ReportConfig
		wantErr string
	}{
		{
			name:    "modules",
			report:  config.ReportConfig{DeterministicModules: []config.ModuleConfigItem{}},
			wantErr: "reports.daily.deterministic_modules must contain at least one entry",
		},
		{
			name: "paths",
			report: config.ReportConfig{Distributor: config.ReportDistributorConfig{
				PathTemplates: []string{},
			}},
			wantErr: "reports.daily.distributor.path_templates must contain at least one entry",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			cfg := config.Defaults()
			cfg.Reports = map[string]config.ReportConfig{"daily": tt.report}
			err := config.Validate(cfg)
			if err == nil || !strings.Contains(err.Error(), tt.wantErr) {
				t.Fatalf("Validate() error = %v, want %q", err, tt.wantErr)
			}
		})
	}
}