use bevy::ecs::system::RunSystemOnce;
use pomomon_garden::features::config::components::{BerrySeedConfig, GameConfig};
use pomomon_garden::features::grid::components::{Grid, Tile, TileState};
use pomomon_garden::features::inventory::components::ItemType;
use pomomon_garden::features::phase::components::{
    CurrentPhase, Phase, SessionTracker, TimerSettings,
};
use pomomon_garden::features::phase::handle_continue;
use pomomon_garden::features::phase::messages::NextPhaseMessage;
use pomomon_garden::prelude::*;

fn setup_growth_app(
    grid_width: u32,
    grid_height: u32,
    initial_tile_states: &[(u32, u32, TileState)],
) -> App {
    let mut app = App::new();
    app.add_plugins(MinimalPlugins);
    app.add_plugins(AssetPlugin::default());

    app.init_resource::<TimerSettings>();
    app.init_resource::<SessionTracker>();
    // Initialize phase as Finished(Focus) to trigger growth on continue
    app.insert_resource(CurrentPhase(Phase::Finished {
        completed_phase: Box::new(Phase::Focus { duration: 25.0 }),
    }));

    // GameConfig with known seeds
    app.insert_resource(GameConfig {
        berry_seeds: vec![BerrySeedConfig {
            name: "FastSeed".into(),
            cost: 1,
            grants: 1,
            slice: "".into(),
            growth_stages: 2,
        }],
        ..Default::default()
    });

    // Grid Setup
    let mut grid_tiles = Vec::with_capacity(grid_width as usize);
    for x in 0..grid_width {
        let mut column = Vec::with_capacity(grid_height as usize);
        for y in 0..grid_height {
            let entity = app
                .world_mut()
                .spawn((Tile { x, y }, TileState::Unclaimed))
                .id();
            column.push(entity);
        }
        grid_tiles.push(column);
    }
    app.insert_resource(Grid {
        width: grid_width,
        height: grid_height,
        tiles: grid_tiles,
    });

    for &(x, y, ref state) in initial_tile_states {
        if let Ok(entity) = app.world().resource::<Grid>().get_tile((x, y)) {
            *app.world_mut().get_mut::<TileState>(entity).unwrap() = state.clone();
        }
    }

    app.add_message::<NextPhaseMessage>();

    app
}

#[test]
fn test_crop_growth_logic() {
    let seed_type = ItemType::BerrySeed {
        name: "FastSeed".into(),
    };

    // Scenario:
    // (0,0): Watered, Stage 0 -> Should grow to 1, become unwatered
    // (1,0): Unwatered, Stage 0 -> Should NOT grow, stay unwatered
    // (2,0): Watered, Stage 2 (Max) -> Should NOT grow, become unwatered

    let initial_states = vec![
        (
            0,
            0,
            TileState::Occupied {
                seed: seed_type.clone(),
                watered: true,
                growth_stage: 0,
                withered: false,
                dry_counter: 0,
            },
        ),
        (
            1,
            0,
            TileState::Occupied {
                seed: seed_type.clone(),
                watered: false,
                growth_stage: 0,
                withered: false,
                dry_counter: 0,
            },
        ),
        (
            2,
            0,
            TileState::Occupied {
                seed: seed_type.clone(),
                watered: true,
                growth_stage: 2, // Max
                withered: false,
                dry_counter: 0,
            },
        ),
    ];

    let mut app = setup_growth_app(3, 1, &initial_states);

    app.world_mut().write_message(NextPhaseMessage);
    let _ = app.world_mut().run_system_once(handle_continue);
    let grid = app.world().resource::<Grid>();

    // Check (0,0)
    let t1 = grid.get_tile((0, 0)).unwrap();
    let s1 = app.world().entity(t1).get::<TileState>().unwrap();
    match s1 {
        TileState::Occupied {
            watered,
            growth_stage,
            ..
        } => {
            assert_eq!(*growth_stage, 1, "(0,0) should grow to stage 1");
            assert_eq!(*watered, false, "(0,0) should be unwatered");
        }
        _ => panic!("Invalid state at (0,0)"),
    }

    // Check (1,0)
    let t2 = grid.get_tile((1, 0)).unwrap();
    let s2 = app.world().entity(t2).get::<TileState>().unwrap();
    match s2 {
        TileState::Occupied {
            watered,
            growth_stage,
            ..
        } => {
            assert_eq!(*growth_stage, 0, "(1,0) should stay at stage 0");
            assert_eq!(*watered, false, "(1,0) should be unwatered");
        }
        _ => panic!("Invalid state at (1,0)"),
    }

    // Check (2,0)
    let t3 = grid.get_tile((2, 0)).unwrap();
    let s3 = app.world().entity(t3).get::<TileState>().unwrap();
    match s3 {
        TileState::Occupied {
            watered,
            growth_stage,
            ..
        } => {
            assert_eq!(*growth_stage, 2, "(2,0) should stay at stage 2 (max)");
            assert_eq!(*watered, false, "(2,0) should be unwatered");
        }
        _ => panic!("Invalid state at (2,0)"),
    }
}