package o11yapiserver

import (
	"net/http"

	"github.com/hanzoai/o11y/pkg/http/handler"
	"github.com/hanzoai/o11y/pkg/http/routing"
	"github.com/hanzoai/o11y/pkg/types"
	"github.com/hanzoai/o11y/pkg/types/metricsexplorertypes"
)

// ALL of these routes are ALSO declared as typed ops at the module's mount seam
// (metrics.go in the repo root), which is what carries them into the composed
// document, the SDK, the CLI and the agent surface. That is a second DISPATCH,
// never a second implementation: the ops answer by handing the call to this
// router, so the handlers below stay the one place the work is performed — and
// the gates declared here (ViewAccess on the reads, EditAccess on the metadata
// write) stay the one place access is decided. Both halves are needed — the ops
// serve the composed binary, this router serves the standalone process, which
// has no native router to register an op on — so deleting either drops one of
// the two deployments.
func (provider *provider) addMetricsExplorerRoutes(router routing.Router) {
	router.Get("/v1/o11y/metrics", handler.New(
		provider.authzMiddleware.ViewAccess(provider.metricsExplorerHandler.ListMetrics),
		handler.OpenAPIDef{
			ID:                  "ListMetrics",
			Tags:                []string{"metrics"},
			Summary:             "List metric names",
			Description:         "This endpoint returns a list of distinct metric names within the specified time range",
			Request:             nil,
			RequestQuery:        new(metricsexplorertypes.ListMetricsParams),
			RequestContentType:  "",
			Response:            new(metricsexplorertypes.ListMetricsResponse),
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
		}))

	router.Post("/v1/o11y/metrics/stats", handler.New(
		provider.authzMiddleware.ViewAccess(provider.metricsExplorerHandler.GetStats),
		handler.OpenAPIDef{
			ID:                  "GetMetricsStats",
			Tags:                []string{"metrics"},
			Summary:             "Get metrics statistics",
			Description:         "This endpoint provides list of metrics with their number of samples and timeseries for the given time range",
			Request:             new(metricsexplorertypes.StatsRequest),
			RequestContentType:  "application/json",
			Response:            new(metricsexplorertypes.StatsResponse),
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
		}))

	router.Post("/v1/o11y/metrics/treemap", handler.New(
		provider.authzMiddleware.ViewAccess(provider.metricsExplorerHandler.GetTreemap),
		handler.OpenAPIDef{
			ID:                  "GetMetricsTreemap",
			Tags:                []string{"metrics"},
			Summary:             "Get metrics treemap",
			Description:         "This endpoint returns a treemap visualization showing the proportional distribution of metrics by sample count or time series count",
			Request:             new(metricsexplorertypes.TreemapRequest),
			RequestContentType:  "application/json",
			Response:            new(metricsexplorertypes.TreemapResponse),
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
		}))

	router.Get("/v1/o11y/metrics/attributes", handler.New(
		provider.authzMiddleware.ViewAccess(provider.metricsExplorerHandler.GetMetricAttributes),
		handler.OpenAPIDef{
			ID:                  "GetMetricAttributes",
			Tags:                []string{"metrics"},
			Summary:             "Get metric attributes",
			Description:         "This endpoint returns attribute keys and their unique values for a specified metric",
			Request:             nil,
			RequestQuery:        new(metricsexplorertypes.MetricAttributesRequest),
			RequestContentType:  "",
			Response:            new(metricsexplorertypes.MetricAttributesResponse),
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusNotFound, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
		}))

	router.Get("/v1/o11y/metrics/metadata", handler.New(
		provider.authzMiddleware.ViewAccess(provider.metricsExplorerHandler.GetMetricMetadata),
		handler.OpenAPIDef{
			ID:                  "GetMetricMetadata",
			Tags:                []string{"metrics"},
			Summary:             "Get metric metadata",
			Description:         "This endpoint returns metadata information like metric description, unit, type, temporality, monotonicity for a specified metric",
			Request:             nil,
			RequestQuery:        new(metricsexplorertypes.MetricNameQuery),
			RequestContentType:  "",
			Response:            new(metricsexplorertypes.MetricMetadata),
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusNotFound, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
		}))

	router.Post("/v1/o11y/metrics/metadata", handler.New(
		provider.authzMiddleware.EditAccess(provider.metricsExplorerHandler.UpdateMetricMetadata),
		handler.OpenAPIDef{
			ID:                  "UpdateMetricMetadata",
			Tags:                []string{"metrics"},
			Summary:             "Update metric metadata",
			Description:         "This endpoint helps to update metadata information like metric description, unit, type, temporality, monotonicity for a specified metric",
			Request:             new(metricsexplorertypes.UpdateMetricMetadataRequest),
			RequestContentType:  "application/json",
			Response:            nil,
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleEditor),
		}))

	router.Get("/v1/o11y/metrics/highlights", handler.New(
		provider.authzMiddleware.ViewAccess(provider.metricsExplorerHandler.GetMetricHighlights),
		handler.OpenAPIDef{
			ID:                  "GetMetricHighlights",
			Tags:                []string{"metrics"},
			Summary:             "Get metric highlights",
			Description:         "This endpoint returns highlights like number of datapoints, totaltimeseries, active time series, last received time for a specified metric",
			Request:             nil,
			RequestQuery:        new(metricsexplorertypes.MetricNameQuery),
			RequestContentType:  "",
			Response:            new(metricsexplorertypes.MetricHighlightsResponse),
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusNotFound, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
		}))

	router.Get("/v1/o11y/metrics/alerts", handler.New(
		provider.authzMiddleware.ViewAccess(provider.metricsExplorerHandler.GetMetricAlerts),
		handler.OpenAPIDef{
			ID:                  "GetMetricAlerts",
			Tags:                []string{"metrics"},
			Summary:             "Get metric alerts",
			Description:         "This endpoint returns associated alerts for a specified metric",
			Request:             nil,
			RequestQuery:        new(metricsexplorertypes.MetricNameQuery),
			RequestContentType:  "",
			Response:            new(metricsexplorertypes.MetricAlertsResponse),
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusNotFound, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
		}))

	// GetMetricDashboardsV2 is the one handler for /v1/o11y/metrics/dashboards.
	router.Get("/v1/o11y/metrics/dashboards", handler.New(
		provider.authzMiddleware.ViewAccess(provider.metricsExplorerHandler.GetMetricDashboardsV2),
		handler.OpenAPIDef{
			ID:                  "GetMetricDashboardsV2",
			Tags:                []string{"metrics"},
			Summary:             "Get metric dashboards (v2)",
			Description:         "This endpoint returns associated v2 dashboards for a specified metric",
			Request:             nil,
			RequestQuery:        new(metricsexplorertypes.MetricNameQuery),
			RequestContentType:  "",
			Response:            new(metricsexplorertypes.MetricDashboardPanelsResponse),
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusNotFound, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
		}))

	router.Post("/v1/o11y/metrics/inspect", handler.New(
		provider.authzMiddleware.ViewAccess(provider.metricsExplorerHandler.InspectMetrics),
		handler.OpenAPIDef{
			ID:                  "InspectMetrics",
			Tags:                []string{"metrics"},
			Summary:             "Inspect raw metric data points",
			Description:         "Returns raw time series data points for a metric within a time range (max 30 minutes). Each series includes labels and timestamp/value pairs.",
			Request:             new(metricsexplorertypes.InspectMetricsRequest),
			RequestContentType:  "application/json",
			Response:            new(metricsexplorertypes.InspectMetricsResponse),
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
		}))

	router.Get("/v1/o11y/metrics/onboarding", handler.New(
		provider.authzMiddleware.ViewAccess(provider.metricsExplorerHandler.GetOnboardingStatus),
		handler.OpenAPIDef{
			ID:                  "GetMetricsOnboardingStatus",
			Tags:                []string{"metrics"},
			Summary:             "Check if non-O11y metrics have been received",
			Description:         "Lightweight endpoint that checks if any non-O11y metrics have been ingested, used for onboarding status detection",
			Request:             nil,
			RequestContentType:  "",
			Response:            new(metricsexplorertypes.MetricsOnboardingResponse),
			ResponseContentType: "application/json",
			SuccessStatusCode:   http.StatusOK,
			ErrorStatusCodes:    []int{http.StatusUnauthorized, http.StatusInternalServerError},
			Deprecated:          false,
			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
		}))
}