export class CanvasTextInput {
    constructor(offsetX, offsetY, width = 120, value = "", label = "", options = {}) {
        this.x = 0;
        this.y = 0;
        this.offsetX = offsetX;
        this.offsetY = offsetY;
        this.width = width;
        this.height = 24;
        this.labelOffset = 16; // space above input for label
        this.value = String(value);
        //this.placeholder = placeholder;
        this.focused = false;
        this.cursorVisible = false;
        this.cursorTimer = 0;

        this.mode = options.mode || "float";  // "int" or "float"

        this.min = options.min ?? -Infinity;
        this.max = options.max ?? Infinity;
        this.label = label || "";
    }




    draw(ctx) {
        if (this.label) {
            ctx.fillStyle = "#000";
            ctx.font = "13px sans-serif";
            ctx.fillText(this.label, this.x, this.y - this.labelOffset + 15);
        }


        ctx.fillStyle = "#fff";
        ctx.strokeStyle = "#666";
        ctx.fillRect(this.x, this.y, this.width, this.height);
        ctx.strokeRect(this.x, this.y, this.width, this.height);

        ctx.fillStyle = "#000";
        ctx.font = "14px sans-serif";
        const text = this.value || this.placeholder;
        ctx.fillText(text, this.x + 5, this.y + 15);

        if (this.focused && this.cursorVisible) {
            const textWidth = ctx.measureText(this.value).width;
            ctx.beginPath();
            ctx.moveTo(this.x + 5 + textWidth, this.y + 4);
            ctx.lineTo(this.x + 5 + textWidth, this.y + this.height - 4);
            ctx.strokeStyle = "#000";
            ctx.stroke();
        }
    }

    contains(mx, my) {
        return mx >= this.x && mx <= this.x + this.width &&
            my >= this.y && my <= this.y + this.height;
    }

    handleClick(mx, my) {
        console.log("HERE", mx, my);
        this.focused = this.contains(mx, my);
        return this.focused;
    }

    handleKey(e) {
        if (!this.focused) return false;
        console.log(e);
        if (e.key === "Backspace") {
            this.value = String(this.value).slice(0, -1);
        } else if (e.key === "Enter") {
            this.clampToRange(); // 👈 clamp on Enter
            this.focused = false;
        } else if (e.key.length === 1) {
            if (this.mode === "int") {
                if (/[\d\-]/.test(e.key)) {
                    this.value += e.key;
                }
            } else if (this.mode === "float") {
                if (/[\d.\-]/.test(e.key)) {
                    this.value += e.key;
                }
            }

        }

        return true;
    }



    update(dt) {
        this.cursorTimer += dt;
        if (this.cursorTimer > 500) {
            this.cursorVisible = !this.cursorVisible;
            this.cursorTimer = 0;
        }
    }

    handleMouseMove(mx, my) {
        // Optional: highlight or cursor change
        return this.contains(mx, my);
    }


    clampToRange() {
        let val = parseFloat(this.value);
        if (isNaN(val)) val = 0;
        val = Math.min(this.max, Math.max(this.min, val));
        this.value = String(val);
    }


    get numericValue() {
        let val = parseFloat(this.value);
        if (isNaN(val)) return 0;
        return Math.min(this.max, Math.max(this.min, val));
    }

}


export class CanvasDropdown {
    constructor(offsetX, offsetY, width, items = [], selected = 0) {
        this.x = 0;
        this.y = 0
        this.offsetX = offsetX;
        this.offsetY = offsetY;
        this.width = width;
        this.height = 20;
        this.items = items;
        this.selectedIndex = 0;
        this.open = false;
        this.hoverIndex = -1;
    }

    draw(ctx) {
        // Collapsed box
        ctx.fillStyle = "#eee";
        ctx.strokeStyle = "#666";
        ctx.fillRect(this.x, this.y, this.width, this.height);
        ctx.strokeRect(this.x, this.y, this.width, this.height);

        ctx.fillStyle = "#000";
        ctx.font = "14px sans-serif";
        ctx.fillText(this.items[this.selectedIndex], this.x + 5, this.y + 15);

        // Expanded list
        if (this.open) {
            for (let i = 0; i < this.items.length; i++) {
                const itemY = this.y + this.height + i * this.height;
                ctx.fillStyle = i === this.hoverIndex ? "#cce" : "#fff";
                ctx.fillRect(this.x, itemY, this.width, this.height);
                ctx.strokeRect(this.x, itemY, this.width, this.height);
                ctx.fillStyle = "#000";
                ctx.fillText(this.items[i], this.x + 5, itemY + 15);
            }
        }
    }

    contains(mx, my) {
        const totalHeight = this.height + (this.open ? this.items.length * this.height : 0);
        return mx >= this.x && mx <= this.x + this.width &&
            my >= this.y && my <= this.y + totalHeight;
    }

    handleClick(mx, my) {
        if (this.open) {
            for (let i = 0; i < this.items.length; i++) {
                const itemY = this.y + this.height + i * this.height;
                if (mx >= this.x && mx <= this.x + this.width &&
                    my >= itemY && my <= itemY + this.height) {
                    this.selectedIndex = i;
                    this.selected = this.items[i];  // 👈 This line is missing
                    this.open = false;
                    this.hoverIndex = -1;
                    return true;
                }
            }
            this.open = false;
            this.hoverIndex = -1;
            return true;
        }

        if (mx >= this.x && mx <= this.x + this.width &&
            my >= this.y && my <= this.y + this.height) {
            this.open = true;
            return true;
        }

        return false;
    }

    handleMouseMove(mx, my) {
        if (!this.open) return false;

        let hovered = -1;
        for (let i = 0; i < this.items.length; i++) {
            const itemY = this.y + this.height + i * this.height;
            if (mx >= this.x && mx <= this.x + this.width &&
                my >= itemY && my <= itemY + this.height) {
                hovered = i;
                break;
            }
        }

        if (hovered !== this.hoverIndex) {
            this.hoverIndex = hovered;
            return true;
        }

        return false;
    }

    get selectedValue() {
        return this.items[this.selectedIndex];
    }
}