//! Integration test: contamination activation mechanic (#254).
//!
//! Verifies that the storyteller activates contamination after the configured
//! delay and that all ActiveFork triangles receive pressure.

use bevy_ecs::prelude::*;
use bevy_ecs::schedule::Schedule;
use std::collections::BTreeMap;

use settled_reach_server::knowledge::types::StableId;
use settled_reach_server::simulation::tier::ActiveSim;
use settled_reach_server::simulation::time::SimulationTime;
use settled_reach_server::simulation::triangle::{
    RoleId, TemplateId, TriangleClassification, TriangleId, TrianglePhase, TriangleState,
};
use settled_reach_server::storyteller::{
    tick_contamination_activation, ContaminationActive, ContaminationEventQueue,
    CONTAMINATION_DELAY_TICKS, CONTAMINATION_PRESSURE_DELTA,
};

fn make_triangle(
    slug: &str,
    classification: TriangleClassification,
    base_ids: [u64; 3],
) -> TriangleState {
    let mut role_assignments = BTreeMap::new();
    role_assignments.insert(RoleId::new("role-a"), StableId(base_ids[0]));
    role_assignments.insert(RoleId::new("role-b"), StableId(base_ids[1]));
    role_assignments.insert(RoleId::new("role-c"), StableId(base_ids[2]));

    TriangleState {
        triangle_id: TriangleId::from_seed_and_slug(0, slug),
        role_assignments,
        tension: 0,
        phase: match classification {
            TriangleClassification::ActiveFork => TrianglePhase::Simmering,
            TriangleClassification::PassiveTension => TrianglePhase::Dormant,
        },
        tension_rate: 1,
        template_id: TemplateId::from_seed_and_slug(0, "authored"),
        classification,
    }
}

/// Acceptance test: run past CONTAMINATION_DELAY_TICKS, assert ContaminationActive
/// is set and all ActiveFork TriangleState entities have tension > 0.
#[test]
fn contamination_activates_after_delay() {
    let mut world = World::new();
    world.init_resource::<SimulationTime>();
    world.init_resource::<ContaminationActive>();
    world.init_resource::<ContaminationEventQueue>();

    // Spawn 3 ActiveFork + 2 PassiveTension triangles (matching real content)
    let fork1 = world
        .spawn((
            make_triangle("hub-power", TriangleClassification::ActiveFork, [1, 2, 3]),
            ActiveSim,
        ))
        .id();
    let fork2 = world
        .spawn((
            make_triangle(
                "bar-tensions",
                TriangleClassification::ActiveFork,
                [4, 5, 6],
            ),
            ActiveSim,
        ))
        .id();
    let fork3 = world
        .spawn((
            make_triangle(
                "informant-question",
                TriangleClassification::ActiveFork,
                [7, 8, 9],
            ),
            ActiveSim,
        ))
        .id();
    let passive1 = world
        .spawn((
            make_triangle(
                "worried-knowledge",
                TriangleClassification::PassiveTension,
                [10, 11, 12],
            ),
            ActiveSim,
        ))
        .id();
    let passive2 = world
        .spawn((
            make_triangle(
                "worried-partner",
                TriangleClassification::PassiveTension,
                [13, 14, 15],
            ),
            ActiveSim,
        ))
        .id();

    let mut schedule = Schedule::default();
    schedule.add_systems(tick_contamination_activation);

    // Simulate past the delay threshold (CONTAMINATION_DELAY_TICKS = 300)
    for tick in 0..=CONTAMINATION_DELAY_TICKS {
        world.resource_mut::<SimulationTime>().tick = tick;
        schedule.run(&mut world);
    }

    // Assert ContaminationActive is set
    assert!(
        world.resource::<ContaminationActive>().0,
        "ContaminationActive must be true after CONTAMINATION_DELAY_TICKS ({}) ticks",
        CONTAMINATION_DELAY_TICKS
    );

    // Assert all ActiveFork triangles have tension > 0
    for (label, entity) in [
        ("hub-power", fork1),
        ("bar-tensions", fork2),
        ("informant-question", fork3),
    ] {
        let state = world
            .get::<TriangleState>(entity)
            .unwrap_or_else(|| panic!("{} triangle entity should exist", label));
        assert!(
            state.tension > 0,
            "ActiveFork triangle '{}' should have tension > 0 after contamination, got {}",
            label,
            state.tension
        );
        assert_eq!(
            state.tension, CONTAMINATION_PRESSURE_DELTA,
            "ActiveFork triangle '{}' tension should be exactly {} (contamination delta)",
            label, CONTAMINATION_PRESSURE_DELTA
        );
    }

    // Assert PassiveTension triangles were NOT pressured
    for (label, entity) in [
        ("worried-knowledge", passive1),
        ("worried-partner", passive2),
    ] {
        let state = world
            .get::<TriangleState>(entity)
            .unwrap_or_else(|| panic!("{} triangle entity should exist", label));
        assert_eq!(
            state.tension, 0,
            "PassiveTension triangle '{}' should have tension 0 (not affected by contamination)",
            label
        );
    }

    // Assert exactly one ContaminationEvent was emitted
    let events = world.resource_mut::<ContaminationEventQueue>().drain();
    assert_eq!(events.len(), 1, "exactly one ContaminationEvent expected");
    assert_eq!(events[0].tick, CONTAMINATION_DELAY_TICKS);
    assert_eq!(events[0].triangles_affected, 3);
}