missing_capability: what an appliance cannot do, and what accepted means when a person does the rest

# Scenario 029: missing_capability: what an appliance cannot do, and what accepted means when a person does the rest
# A device that lacks an operation is refused alone and named at the first missing step. With a person present every missing step is assigned to the person, so accepted means a plan exists, not that the appliance does much of it.
# Run a hub first: python hub/cookwala_hub.py --recipes examples
import json, os
from cookwala.client import CookwalaClient, CookwalaProblem

def load(path):
    with open(path, encoding="utf-8") as f:
        return json.load(f)

def pick(obj, path):
    for part in path.replace("]", "").replace("[", ".").split("."):
        obj = obj[int(part)] if part.isdigit() else (len(obj) if part == "length" else obj.get(part))
    return obj

c = CookwalaClient(os.environ.get("COOKWALA_HUB", "http://localhost:7878"))


# Step 1: The oven cannot grate an onion: refused at n1 with the reason spelled out.
ovenAlone = c.dry_run(recipe_id="kofta-oven", device_id="demo-oven", human_present=False)
assert pick(ovenAlone, "state") == "refused", pick(ovenAlone, "state")
print("ok", "state", "=", "refused")
assert pick(ovenAlone, "refusal.reason") == "missing_capability", pick(ovenAlone, "refusal.reason")
print("ok", "refusal.reason", "=", "missing_capability")
assert pick(ovenAlone, "refusal.node") == "n1", pick(ovenAlone, "refusal.node")
print("ok", "refusal.node", "=", "n1")
assert pick(ovenAlone, "refusal.detail") == "device cannot perform cw.op.grate and no person is present to do it", pick(ovenAlone, "refusal.detail")
print("ok", "refusal.detail", "=", "device cannot perform cw.op.grate and no person is present to do it")

# Step 2: The counter arm washes and drains the rice, then cannot heat a pan: two steps planned, refused at n3.
armAlone = c.dry_run(recipe_id="rice-vermicelli", device_id="demo-arm", human_present=False)
assert pick(armAlone, "state") == "refused", pick(armAlone, "state")
print("ok", "state", "=", "refused")
assert pick(armAlone, "refusal.reason") == "missing_capability", pick(armAlone, "refusal.reason")
print("ok", "refusal.reason", "=", "missing_capability")
assert pick(armAlone, "refusal.node") == "n3", pick(armAlone, "refusal.node")
print("ok", "refusal.node", "=", "n3")
assert pick(armAlone, "plan.length") == 2, pick(armAlone, "plan.length")
print("ok", "plan.length", "=", 2)

# Step 3: With a person: accepted. The person grates, cuts, mixes and forms; the oven preheats and bakes.
ovenWithPerson = c.dry_run(recipe_id="kofta-oven", device_id="demo-oven", human_present=True)
assert pick(ovenWithPerson, "state") == "accepted", pick(ovenWithPerson, "state")
print("ok", "state", "=", "accepted")
assert pick(ovenWithPerson, "plan.length") == 10, pick(ovenWithPerson, "plan.length")
print("ok", "plan.length", "=", 10)
assert pick(ovenWithPerson, "plan[0].by") == "human", pick(ovenWithPerson, "plan[0].by")
print("ok", "plan[0].by", "=", "human")
assert pick(ovenWithPerson, "plan[7].by") == "device", pick(ovenWithPerson, "plan[7].by")
print("ok", "plan[7].by", "=", "device")

# Step 4: A salad on an oven with a person present is also accepted, and every one of the nine steps is the person's. Read the plan, not only the state.
salad = c.dry_run(recipe_id="salata-baladi", device_id="demo-oven", human_present=True)
assert pick(salad, "state") == "accepted", pick(salad, "state")
print("ok", "state", "=", "accepted")
assert pick(salad, "plan.length") == 9, pick(salad, "plan.length")
print("ok", "plan.length", "=", 9)
assert pick(salad, "plan[0].by") == "human", pick(salad, "plan[0].by")
print("ok", "plan[0].by", "=", "human")
assert pick(salad, "plan[8].by") == "human", pick(salad, "plan[8].by")
print("ok", "plan[8].by", "=", "human")

print("scenario complete")