A meal-planning agent receives eleven constraints and zero facts

# Scenario 081: A meal-planning agent receives eleven constraints and zero facts
# An AI planner is the role that may receive the most constraint types. Derive them and see that two facts about one household member (a medication and a schedule) collapse into one serve window with no times, no drug and no name.
# 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: Derive the planner's constraints from the example household.
planner = c.derive_constraints(pick(load("examples/household/context.json"), "facets"), "planner")
assert pick(planner, "constraints.length") == 11, pick(planner, "constraints.length")
print("ok", "constraints.length", "=", 11)
assert pick(planner, "disclosed.length") == 0, pick(planner, "disclosed.length")
print("ok", "disclosed.length", "=", 0)
assert pick(planner, "withheld.length") == 2, pick(planner, "withheld.length")
print("ok", "withheld.length", "=", 2)
assert pick(planner, "constraints[0].type") == "allergen_block", pick(planner, "constraints[0].type")
print("ok", "constraints[0].type", "=", "allergen_block")
assert pick(planner, "constraints[1].type") == "diet_rule", pick(planner, "constraints[1].type")
print("ok", "constraints[1].type", "=", "diet_rule")
assert pick(planner, "constraints[2].type") == "avoid_ingredient", pick(planner, "constraints[2].type")
print("ok", "constraints[2].type", "=", "avoid_ingredient")

# Step 2: The serve window is derived from two facets at once, the medication timing and the household schedule; the agent learns a window exists, not why.
assert pick(planner, "constraints[3].type") == "serve_window", pick(planner, "constraints[3].type")
print("ok", "constraints[3].type", "=", "serve_window")
assert pick(planner, "constraints[3].derivedFrom") == ["cw.facet.household.health.medications", "cw.facet.household.people.schedule"], pick(planner, "constraints[3].derivedFrom")
print("ok", "constraints[3].derivedFrom", "=", ["cw.facet.household.health.medications", "cw.facet.household.people.schedule"])

# Step 3: Only two facets are withheld from a planner: the receiving rules (a grocer's business, not a planner's) and the firmware (consented, and no grant names a planner).
assert pick(planner, "withheld[0].facet") == "cw.facet.commerce.receiving_rules", pick(planner, "withheld[0].facet")
print("ok", "withheld[0].facet", "=", "cw.facet.commerce.receiving_rules")
assert pick(planner, "withheld[0].reason") == "not_allowed_for_role", pick(planner, "withheld[0].reason")
print("ok", "withheld[0].reason", "=", "not_allowed_for_role")
assert pick(planner, "withheld[1].facet") == "cw.facet.self.firmware", pick(planner, "withheld[1].facet")
print("ok", "withheld[1].facet", "=", "cw.facet.self.firmware")
assert pick(planner, "withheld[1].reason") == "no_consent", pick(planner, "withheld[1].reason")
print("ok", "withheld[1].reason", "=", "no_consent")

# Step 4: The same medication facet alone: it yields an avoid-ingredient rule and a serve window, and the facet's free text about timing never leaves.
meds = c.derive_constraints([{"facet": "cw.facet.household.health.medications"}], "planner")
assert pick(meds, "constraints.length") == 2, pick(meds, "constraints.length")
print("ok", "constraints.length", "=", 2)
assert pick(meds, "constraints[0].type") == "avoid_ingredient", pick(meds, "constraints[0].type")
print("ok", "constraints[0].type", "=", "avoid_ingredient")
assert pick(meds, "constraints[1].type") == "serve_window", pick(meds, "constraints[1].type")
print("ok", "constraints[1].type", "=", "serve_window")
assert pick(meds, "withheld.length") == 0, pick(meds, "withheld.length")
print("ok", "withheld.length", "=", 0)

print("scenario complete")