import { describe, it, expect, beforeEach } from "vitest";
import { mount } from "@vue/test-utils";
import { createPinia, setActivePinia } from "pinia";
import OffensiveApproach from "~/components/Decisions/OffensiveApproach.vue";
import { useGameStore } from "~/store/game";
import type { GameState, OffensiveDecision } from "~/types/game";

/**
 * Creates a minimal GameState for testing, with sensible defaults.
 * Only override the fields you care about per test.
 */
function makeGameState(overrides: Partial<GameState> = {}): GameState {
    return {
        game_id: "test-game-123",
        league_id: "sba",
        home_team_id: 1,
        away_team_id: 2,
        home_team_is_ai: false,
        away_team_is_ai: false,
        creator_discord_id: null,
        auto_mode: false,
        status: "active",
        inning: 5,
        half: "top",
        outs: 0,
        balls: 0,
        strikes: 0,
        home_score: 3,
        away_score: 2,
        on_first: null,
        on_second: null,
        on_third: null,
        current_batter: { lineup_id: 10, card_id: 100, position: "LF", batting_order: 1, is_active: true },
        current_pitcher: { lineup_id: 20, card_id: 200, position: "P", batting_order: null, is_active: true },
        current_catcher: null,
        current_on_base_code: 0,
        away_team_batter_idx: 0,
        home_team_batter_idx: 0,
        pending_decision: null,
        decision_phase: "awaiting_offensive",
        decisions_this_play: {},
        pending_defensive_decision: null,
        pending_offensive_decision: null,
        pending_manual_roll: null,
        pending_x_check: null,
        pending_uncapped_hit: null,
        play_count: 0,
        last_play_result: null,
        created_at: "2025-01-01T00:00:00Z",
        started_at: "2025-01-01T00:00:00Z",
        completed_at: null,
        ...overrides,
    } as GameState;
}

/** Helper to create a mock runner LineupPlayerState */
function makeRunner(lineupId: number, position: string = "LF") {
    return { lineup_id: lineupId, card_id: lineupId * 10, position, batting_order: 1, is_active: true };
}

describe("OffensiveApproach", () => {
    let pinia: ReturnType<typeof createPinia>;

    const defaultProps = {
        gameId: "test-game-123",
        isActive: true,
    };

    beforeEach(() => {
        pinia = createPinia();
        setActivePinia(pinia);
    });

    /**
     * Helper: mount with game state injected into the store.
     * Sets up Pinia and populates gameStore.gameState before mounting.
     */
    function mountWithGameState(gameStateOverrides: Partial<GameState> = {}, propsOverrides: Record<string, any> = {}) {
        const gameStore = useGameStore();
        gameStore.setGameState(makeGameState(gameStateOverrides));
        return mount(OffensiveApproach, {
            props: { ...defaultProps, ...propsOverrides },
            global: { plugins: [pinia] },
        });
    }

    describe("Rendering", () => {
        it("always shows Swing Away option", () => {
            /**
             * Swing Away is the default action and should always be visible
             * regardless of game state.
             */
            const wrapper = mountWithGameState();
            expect(wrapper.text()).toContain("Swing Away");
        });

        it("renders offensive action header", () => {
            const wrapper = mountWithGameState();
            expect(wrapper.text()).toContain("Offensive Action");
        });

        it("shows Opponent's Turn badge when not active", () => {
            const wrapper = mountWithGameState({}, { isActive: false });
            expect(wrapper.text()).toContain("Opponent's Turn");
        });

        it("hides Opponent's Turn badge when active", () => {
            const wrapper = mountWithGameState();
            expect(wrapper.text()).not.toContain("Opponent's Turn");
        });
    });

    describe("Check Jump (requires any runner on base)", () => {
        it("hides Check Jump when bases empty", () => {
            /**
             * Check Jump requires at least one runner on base.
             * With empty bases it should not appear at all.
             */
            const wrapper = mountWithGameState({ on_first: null, on_second: null, on_third: null });
            expect(wrapper.text()).not.toContain("Check Jump");
        });

        it("shows Check Jump with runner on first", () => {
            const wrapper = mountWithGameState({ on_first: makeRunner(10) });
            expect(wrapper.text()).toContain("Check Jump");
        });

        it("shows Check Jump with runner on second only", () => {
            /**
             * Even though hit-and-run is NOT available with runner on 2nd only,
             * check jump IS available with any runner.
             */
            const wrapper = mountWithGameState({ on_second: makeRunner(20) });
            expect(wrapper.text()).toContain("Check Jump");
        });

        it("shows Check Jump with runner on third", () => {
            const wrapper = mountWithGameState({ on_third: makeRunner(30) });
            expect(wrapper.text()).toContain("Check Jump");
        });
    });

    describe("Hit and Run (requires runner on 1st and/or 3rd)", () => {
        it("hides Hit and Run when bases empty", () => {
            const wrapper = mountWithGameState();
            expect(wrapper.text()).not.toContain("Hit and Run");
        });

        it("hides Hit and Run with runner on second only", () => {
            /**
             * Hit and Run should NOT be available when only a runner on 2nd.
             * The user's rule: "runner on first and/or third".
             */
            const wrapper = mountWithGameState({ on_second: makeRunner(20) });
            expect(wrapper.text()).not.toContain("Hit and Run");
        });

        it("shows Hit and Run with runner on first", () => {
            const wrapper = mountWithGameState({ on_first: makeRunner(10) });
            expect(wrapper.text()).toContain("Hit and Run");
        });

        it("shows Hit and Run with runner on third", () => {
            const wrapper = mountWithGameState({ on_third: makeRunner(30) });
            expect(wrapper.text()).toContain("Hit and Run");
        });

        it("shows Hit and Run with runners on first and third", () => {
            const wrapper = mountWithGameState({
                on_first: makeRunner(10),
                on_third: makeRunner(30),
            });
            expect(wrapper.text()).toContain("Hit and Run");
        });

        it("shows Hit and Run with runner on first and second (first qualifies)", () => {
            /**
             * Runner on 1st satisfies the condition even if 2nd is also occupied.
             */
            const wrapper = mountWithGameState({
                on_first: makeRunner(10),
                on_second: makeRunner(20),
            });
            expect(wrapper.text()).toContain("Hit and Run");
        });
    });

    describe("Sacrifice Bunt (requires < 2 outs AND runners on base)", () => {
        it("hides Sac Bunt when bases empty", () => {
            /**
             * Sac bunt requires on_base_code > 0 (runners on base).
             */
            const wrapper = mountWithGameState({ outs: 0 });
            expect(wrapper.text()).not.toContain("Sacrifice Bunt");
        });

        it("hides Sac Bunt with 2 outs", () => {
            const wrapper = mountWithGameState({ outs: 2, on_first: makeRunner(10) });
            expect(wrapper.text()).not.toContain("Sacrifice Bunt");
        });

        it("shows Sac Bunt with 0 outs and runner on base", () => {
            const wrapper = mountWithGameState({ outs: 0, on_first: makeRunner(10) });
            expect(wrapper.text()).toContain("Sacrifice Bunt");
        });

        it("shows Sac Bunt with 1 out and runner on base", () => {
            const wrapper = mountWithGameState({ outs: 1, on_second: makeRunner(20) });
            expect(wrapper.text()).toContain("Sacrifice Bunt");
        });
    });

    describe("Squeeze Bunt (requires < 2 outs AND runner on 3rd)", () => {
        it("hides Squeeze Bunt when no runner on third", () => {
            const wrapper = mountWithGameState({ outs: 0, on_first: makeRunner(10) });
            expect(wrapper.text()).not.toContain("Squeeze Bunt");
        });

        it("hides Squeeze Bunt with 2 outs even if runner on third", () => {
            const wrapper = mountWithGameState({ outs: 2, on_third: makeRunner(30) });
            expect(wrapper.text()).not.toContain("Squeeze Bunt");
        });

        it("shows Squeeze Bunt with 0 outs and runner on third", () => {
            const wrapper = mountWithGameState({ outs: 0, on_third: makeRunner(30) });
            expect(wrapper.text()).toContain("Squeeze Bunt");
        });

        it("shows Squeeze Bunt with 1 out and runner on third", () => {
            const wrapper = mountWithGameState({ outs: 1, on_third: makeRunner(30) });
            expect(wrapper.text()).toContain("Squeeze Bunt");
        });
    });

    describe("Steal option removed", () => {
        it("does not show Steal option even with runners on base", () => {
            /**
             * The steal option was removed — check jump encompasses steal behavior.
             */
            const wrapper = mountWithGameState({ on_first: makeRunner(10) });
            const actionLabels = wrapper.findAll("button[type='button']").map(b => b.text());
            const hasStealLabel = actionLabels.some(label => label.includes("Steal") && !label.includes("Bunt"));
            expect(hasStealLabel).toBe(false);
        });
    });

    describe("Full scenario: all options visible", () => {
        it("shows all 5 options with 0 outs and runners on 1st and 3rd", () => {
            /**
             * With 0 outs, runner on 1st AND 3rd: all conditions are met.
             * Should show: Swing Away, Check Jump, Hit and Run, Sac Bunt, Squeeze Bunt.
             */
            const wrapper = mountWithGameState({
                outs: 0,
                on_first: makeRunner(10),
                on_third: makeRunner(30),
            });
            expect(wrapper.text()).toContain("Swing Away");
            expect(wrapper.text()).toContain("Check Jump");
            expect(wrapper.text()).toContain("Hit and Run");
            expect(wrapper.text()).toContain("Sacrifice Bunt");
            expect(wrapper.text()).toContain("Squeeze Bunt");
        });
    });

    describe("Action Selection", () => {
        it("selects swing_away by default", () => {
            const wrapper = mountWithGameState({ on_first: makeRunner(10) });
            // The checkmark should be next to Swing Away
            const buttons = wrapper.findAll("button[type='button']");
            const swingBtn = buttons.find(b => b.text().includes("Swing Away"));
            expect(swingBtn?.text()).toContain("✓");
        });

        it("can select check_jump when available", async () => {
            const wrapper = mountWithGameState({ on_first: makeRunner(10) });
            const buttons = wrapper.findAll("button[type='button']");
            const checkJumpBtn = buttons.find(b => b.text().includes("Check Jump"));
            expect(checkJumpBtn).toBeTruthy();

            await checkJumpBtn!.trigger("click");

            // Checkmark should move to Check Jump
            expect(checkJumpBtn!.text()).toContain("✓");
        });

        it("does not change action when not active", async () => {
            const wrapper = mountWithGameState({ on_first: makeRunner(10) }, { isActive: false });
            const buttons = wrapper.findAll("button[type='button']");
            const checkJumpBtn = buttons.find(b => b.text().includes("Check Jump"));

            await checkJumpBtn!.trigger("click");

            // Swing Away should still be selected (checkmark stays)
            const swingBtn = buttons.find(b => b.text().includes("Swing Away"));
            expect(swingBtn?.text()).toContain("✓");
        });
    });

    describe("Auto-reset when action becomes unavailable", () => {
        it("resets to swing_away when selected action disappears", async () => {
            /**
             * If a user selects sac_bunt but then the game state changes
             * (e.g., outs increase to 2), the selection should reset to swing_away.
             */
            const gameStore = useGameStore();
            gameStore.setGameState(makeGameState({ outs: 0, on_first: makeRunner(10) }));

            const wrapper = mount(OffensiveApproach, {
                props: defaultProps,
                global: { plugins: [pinia] },
            });

            // Select sac bunt
            const sacBuntBtn = wrapper.findAll("button[type='button']").find(b => b.text().includes("Sacrifice Bunt"));
            await sacBuntBtn!.trigger("click");

            // Now change game state to 2 outs — sac bunt should disappear
            gameStore.setGameState(makeGameState({ outs: 2, on_first: makeRunner(10) }));
            await wrapper.vm.$nextTick();

            // Action should auto-reset to swing_away
            const swingBtn = wrapper.findAll("button[type='button']").find(b => b.text().includes("Swing Away"));
            expect(swingBtn?.text()).toContain("✓");
            expect(wrapper.text()).not.toContain("Sacrifice Bunt");
        });
    });

    describe("Form Submission", () => {
        it("emits submit with current action", async () => {
            const wrapper = mountWithGameState({ on_first: makeRunner(10) });

            // Select check_jump
            const checkJumpBtn = wrapper.findAll("button[type='button']").find(b => b.text().includes("Check Jump"));
            await checkJumpBtn!.trigger("click");

            await wrapper.find("form").trigger("submit.prevent");

            expect(wrapper.emitted("submit")).toBeTruthy();
            const emitted = wrapper.emitted("submit")![0][0] as Omit<OffensiveDecision, "steal_attempts">;
            expect(emitted.action).toBe("check_jump");
        });

        it("does not submit when not active", async () => {
            const wrapper = mountWithGameState({}, { isActive: false });
            await wrapper.find("form").trigger("submit.prevent");
            expect(wrapper.emitted("submit")).toBeFalsy();
        });

        it("submits default swing_away when no changes made", async () => {
            const wrapper = mountWithGameState();
            await wrapper.find("form").trigger("submit.prevent");
            expect(wrapper.emitted("submit")).toBeTruthy();
            const emitted = wrapper.emitted("submit")![0][0] as Omit<OffensiveDecision, "steal_attempts">;
            expect(emitted.action).toBe("swing_away");
        });
    });

    describe("Game State from Store (bug fix verification)", () => {
        it("reads game state from store, not from props", () => {
            /**
             * The old OffensiveApproach used props like runnerOnFirst, runnerOnThird,
             * and outs that were never passed by DecisionPanel (all defaulted to false/0).
             * The new version reads from useGameStore() directly.
             *
             * This test verifies the fix by setting store state with runners and outs
             * WITHOUT passing any runner/outs props, and expecting correct filtering.
             */
            const wrapper = mountWithGameState({
                outs: 0,
                on_first: makeRunner(10),
                on_third: makeRunner(30),
            });
            // No runner props passed — component reads from store
            expect(wrapper.text()).toContain("Check Jump");
            expect(wrapper.text()).toContain("Hit and Run");
            expect(wrapper.text()).toContain("Sacrifice Bunt");
            expect(wrapper.text()).toContain("Squeeze Bunt");
        });
    });
});