import {z} from 'zod'

export type GetApiApiOrgIdLlmModelsUnpricedArgs = {org_id: string, stream_name: string, start_time: number, end_time: number};

export type GetApiApiOrgIdLlmModelsUnpricedOptions = {baseUrl: string, Authorization?: string | undefined, fetch?: typeof fetch | undefined};

export const costStatus = z.enum(["unpriced", "approximate", "free"]);

export const pricingSource = z.enum(["built_in", "meta_org", "org"]);

export const tierOperator = z.enum(["gt", "gte", "lt", "lte", "eq", "neq"]);

export const tierCondition = z.object({operator: tierOperator.optional(), usage_key: z.string().optional(), value: z.number().optional()});

export const ruleOp = z.enum(["in", "not_in", "exists", "not_exists", "gt", "gte", "lt", "lte", "unknown"]);

export const tierRule = z.object({keys: z.array(z.string()).optional(), op: ruleOp.optional(), value: z.number().nullable().optional(), values: z.array(z.string()).optional()});

export const utcTimeWindow = z.object({end_minute: z.number().int().gte(0).optional(), start_minute: z.number().int().gte(0).optional()});

export const pricingTierDefinition = z.object({condition: tierCondition.nullable().optional(), name: z.string().optional(), prices: z.record(z.string(), z.number()).optional(), priority: z.number().int().optional(), rules: z.array(tierRule).optional(), utc_windows: z.array(utcTimeWindow).optional()});

export const unpricedModelMatch = z.object({match_pattern: z.string(), name: z.string(), source: pricingSource, tiers: z.array(pricingTierDefinition)});

export const unpricedModel = z.object({agent_count: z.number().int(), agents: z.array(z.string()), cost: z.number(), model: z.string().nullable().optional(), spans: z.number().int(), status: costStatus, tokens: z.number().int(), matched: unpricedModelMatch.nullable().optional(), priced_now: z.boolean()});

export const unpricedModelsResponse = z.object({model_count: z.number().int(), models: z.array(unpricedModel), models_truncated: z.boolean(), tokens: z.number().int()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * List models seen in traces with no price or an approximate one
 * 
 * GET /api/{org_id}/llm/models/unpriced
 */
export const getApiApiOrgIdLlmModelsUnpriced = async (args: GetApiApiOrgIdLlmModelsUnpricedArgs, options: GetApiApiOrgIdLlmModelsUnpricedOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Authorization} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.stream_name != null) query.append("stream_name", String(args.stream_name))
if (args.start_time != null) query.append("start_time", String(args.start_time))
if (args.end_time != null) query.append("end_time", String(args.end_time))
if (Authorization !== undefined) headers.set("Authorization", Authorization)

const url = `${baseUrl.replace(/\/+$/, '')}/api/${encodeURIComponent(String(args.org_id))}/llm/models/unpriced${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(unpricedModelsResponse, await res.json())
};