/**
 * The AFI fixture, TypeScript side — mirrors `tests/afi/fixture.py` 1:1.
 *
 * Each function declares the same IR type schema the Python fixture's Pydantic
 * Input/Output models imply, so `buildIr()` here emits the same KDL the Python
 * `build_ir()` emits from `fixture.py`. The byte-parity test (`ir.test.ts`)
 * subprocesses the live Python emitter and asserts equality.
 *
 * Output structs are declared under their model name (`ProfileOutput`,
 * `OrderOutput`, …) and referenced via `{ kind: 'ref' }`; the emitter renames
 * them to the canonical `<camel>Output`, exactly as `_collect_named_types`
 * renames the Pydantic models.
 */

import { client, ReactContext } from '../src'
import type { NamedType, StructField } from '../src'

const intField = (name: string): StructField => ({
    name,
    required: true,
    shape: { kind: 'primitive', primitive: 'integer' },
})
const strField = (name: string): StructField => ({
    name,
    required: true,
    shape: { kind: 'primitive', primitive: 'string' },
})
const boolField = (name: string): StructField => ({
    name,
    required: true,
    shape: { kind: 'primitive', primitive: 'boolean' },
})

const ProfileOutput: NamedType = { kind: 'struct', fields: [intField('user_id'), strField('name')] }
const OrderOutput: NamedType = {
    kind: 'struct',
    fields: [intField('id'), intField('user_id'), intField('total')],
}

const UserCtx = new ReactContext('user')

/** Register the AFI fixture functions with the mizan-ts registry. */
export function registerFixture(): void {
    // echo — plain function, typed input + struct output.
    client(
        {
            ir: {
                input: [strField('text')],
                output: { kind: 'ref', name: 'EchoOutput' },
                types: { EchoOutput: { kind: 'struct', fields: [strField('message')] } },
            },
        },
        async function echo(text: string) {
            return { message: `echo: ${text}` }
        },
    )

    // whoami — no input.
    client(
        {
            ir: {
                output: { kind: 'ref', name: 'WhoamiOutput' },
                types: {
                    WhoamiOutput: {
                        kind: 'struct',
                        fields: [strField('email'), boolField('authenticated')],
                    },
                },
            },
        },
        async function whoami() {
            return { email: 'anon@example.com', authenticated: false }
        },
    )

    // user_profile — context member.
    client(
        {
            context: UserCtx,
            ir: {
                input: [intField('user_id')],
                output: { kind: 'ref', name: 'ProfileOutput' },
                types: { ProfileOutput },
            },
        },
        async function user_profile(user_id: number) {
            return { user_id, name: 'placeholder' }
        },
    )

    // user_orders — context member, list output, same param (param elevation).
    client(
        {
            context: UserCtx,
            ir: {
                input: [intField('user_id')],
                output: { kind: 'list', inner: { kind: 'ref', name: 'OrderOutput' } },
                types: { OrderOutput },
            },
        },
        async function user_orders(_user_id: number) {
            return []
        },
    )

    // update_profile — mutation affecting the user context.
    client(
        {
            affects: UserCtx,
            ir: {
                input: [intField('user_id'), strField('name')],
                output: { kind: 'ref', name: 'StatusOutput' },
                types: { StatusOutput: { kind: 'struct', fields: [boolField('ok')] } },
            },
        },
        async function update_profile(_user_id: number, _name: string) {
            return { ok: true }
        },
    )

    // find_user — optional return.
    client(
        {
            ir: {
                input: [intField('user_id')],
                output: { kind: 'optional', inner: { kind: 'ref', name: 'ProfileOutput' } },
                types: { ProfileOutput },
            },
        },
        async function find_user(_user_id: number) {
            return null
        },
    )

    // rename_user — merge target.
    client(
        {
            merge: UserCtx,
            ir: {
                input: [intField('user_id'), strField('name')],
                output: { kind: 'ref', name: 'ProfileOutput' },
                types: { ProfileOutput },
            },
        },
        async function rename_user(user_id: number, name: string) {
            return { user_id, name }
        },
    )
}