{
  "openapi": "3.1.0",
  "info": {
    "title": "hs-data API",
    "description": "Group-buy (拼团) funnel service over ads_trd_group_funnel_daily (single day, full history) + ads_trd_group_funnel_rolling (7d/30d).",
    "version": "0.1.0"
  },
  "paths": {
    "/api/funnels/query": {
      "post": {
        "tags": [
          "funnels"
        ],
        "summary": "Query Funnel",
        "description": "Compute UV and conversion metrics for the group-buy funnel over a period.\n\nThe ``period`` enum is validated by Pydantic (bad value -> 422). For\n``period=day``, a ``snapshot_dt`` later than yesterday (today/future) is\nrejected with 422 (data is T+1).",
        "operationId": "query_funnel_api_funnels_query_post",
        "requestBody": {
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/FunnelQueryRequest"
              }
            }
          },
          "required": true
        },
        "responses": {
          "200": {
            "description": "Successful Response",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/FunnelQueryResponse"
                }
              }
            }
          },
          "422": {
            "description": "Validation Error",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/HTTPValidationError"
                }
              }
            }
          }
        }
      }
    },
    "/health": {
      "get": {
        "tags": [
          "meta"
        ],
        "summary": "Health",
        "description": "Liveness probe. Does not touch the database.",
        "operationId": "health_health_get",
        "responses": {
          "200": {
            "description": "Successful Response",
            "content": {
              "application/json": {
                "schema": {
                  "additionalProperties": {
                    "type": "string"
                  },
                  "type": "object",
                  "title": "Response Health Health Get"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "DataStatus": {
        "type": "string",
        "enum": [
          "ready",
          "missing"
        ],
        "title": "DataStatus",
        "description": "Data completeness status for a query result (docs/02 §5 v3).\n\nready   - the target row exists and the period's columns are non-null.\nmissing - no target row, or the period columns are NULL. Never zero-filled."
      },
      "FunnelQueryRequest": {
        "properties": {
          "period": {
            "$ref": "#/components/schemas/Period"
          },
          "snapshot_dt": {
            "anyOf": [
              {
                "type": "string",
                "format": "date"
              },
              {
                "type": "null"
              }
            ],
            "title": "Snapshot Dt",
            "description": "Optional ISO date (YYYY-MM-DD). Only meaningful for period=day; ignored for last_7d/last_30d. Must be <= yesterday."
          }
        },
        "type": "object",
        "required": [
          "period"
        ],
        "title": "FunnelQueryRequest",
        "description": "Funnel query request body.\n\n``snapshot_dt`` (ISO ``YYYY-MM-DD``) is optional and only meaningful for\n``period=day``: omitted -> latest daily row; given -> that historical day\n(must be <= yesterday). For ``last_7d`` / ``last_30d`` it is ignored."
      },
      "FunnelQueryResponse": {
        "properties": {
          "period": {
            "$ref": "#/components/schemas/Period"
          },
          "snapshot_dt": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "title": "Snapshot Dt",
            "description": "dt (yyyyMMdd) of the row actually used; for day = that day, for 7d/30d = the rolling row's as-of dt. null when missing."
          },
          "results": {
            "items": {
              "$ref": "#/components/schemas/FunnelStepResult"
            },
            "type": "array",
            "title": "Results"
          },
          "data_status": {
            "$ref": "#/components/schemas/DataStatus"
          }
        },
        "type": "object",
        "required": [
          "period",
          "results",
          "data_status"
        ],
        "title": "FunnelQueryResponse",
        "description": "Funnel query response body."
      },
      "FunnelStepResult": {
        "properties": {
          "step_index": {
            "type": "integer",
            "minimum": 1.0,
            "title": "Step Index",
            "description": "1-based step index"
          },
          "name": {
            "type": "string",
            "title": "Name",
            "description": "Chinese display name of the step"
          },
          "event_key": {
            "type": "string",
            "title": "Event Key",
            "description": "Stable step key (start/show/...)"
          },
          "uv": {
            "type": "integer",
            "minimum": 0.0,
            "title": "Uv"
          },
          "conversion_rate": {
            "anyOf": [
              {
                "type": "number"
              },
              {
                "type": "null"
              }
            ],
            "title": "Conversion Rate",
            "description": "uv[i] / uv[i-1]; null for step 1 or when uv[i-1] == 0"
          },
          "dropoff_rate": {
            "anyOf": [
              {
                "type": "number"
              },
              {
                "type": "null"
              }
            ],
            "title": "Dropoff Rate",
            "description": "1 - conversion_rate; null when conversion_rate is null"
          }
        },
        "type": "object",
        "required": [
          "step_index",
          "name",
          "event_key",
          "uv"
        ],
        "title": "FunnelStepResult",
        "description": "Computed UV and conversion metrics for one fixed step."
      },
      "HTTPValidationError": {
        "properties": {
          "detail": {
            "items": {
              "$ref": "#/components/schemas/ValidationError"
            },
            "type": "array",
            "title": "Detail"
          }
        },
        "type": "object",
        "title": "HTTPValidationError"
      },
      "Period": {
        "type": "string",
        "enum": [
          "day",
          "last_7d",
          "last_30d"
        ],
        "title": "Period",
        "description": "Supported periods (docs/02 §5 v3).\n\nRouting:\n  day      -> table ads_trd_group_funnel_daily (single day, full history).\n  last_7d  -> table ads_trd_group_funnel_rolling, columns uv_*_7d.\n  last_30d -> table ads_trd_group_funnel_rolling, columns uv_*_30d.\n\nAny other value is rejected with HTTP 422."
      },
      "ValidationError": {
        "properties": {
          "loc": {
            "items": {
              "anyOf": [
                {
                  "type": "string"
                },
                {
                  "type": "integer"
                }
              ]
            },
            "type": "array",
            "title": "Location"
          },
          "msg": {
            "type": "string",
            "title": "Message"
          },
          "type": {
            "type": "string",
            "title": "Error Type"
          },
          "input": {
            "title": "Input"
          },
          "ctx": {
            "type": "object",
            "title": "Context"
          }
        },
        "type": "object",
        "required": [
          "loc",
          "msg",
          "type"
        ],
        "title": "ValidationError"
      }
    }
  }
}