/**
 * Created by Tony on 2017/11/2.
 */
let JpcCanvasOutput = {
    offsetX: 10,
    offsetY: 10,
    cleanCanvas: function (canvas) {
        let ctx = canvas.getContext("2d");
        ctx.save();
        ctx.fillStyle="white";
        ctx.clearRect(0,0, canvas.width, canvas.height);
        ctx.restore();
    },
    drawToCanvas : function(pageObj, canvas, pageIdx) {
        let me = this;
        let ctx = canvas.getContext("2d");

        function private_setupAreaH(area, type, fontAngle, dftFontHeight, outputPoint) {
            let lType = type;
            if (type !== "left" && type !== "right" && type !== "center") lType = "left";
            switch (lType) {
                case "left":
                    if (fontAngle === JV.VERTICAL_ANGLE_INT) {
                        outputPoint[1] = 1 * area[JV.IDX_TOP] + JV.OUTPUT_OFFSET[JV.OFFSET_IDX_LEFT];
                    } else if (fontAngle === JV.ANTI_VERTICAL_ANGLE_INT) {
                        outputPoint[1] = 1 * area[JV.IDX_BOTTOM] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_LEFT];
                    } else outputPoint[0] = 1 * area[JV.IDX_LEFT] + JV.OUTPUT_OFFSET[JV.OFFSET_IDX_LEFT];
                    ctx.textAlign="start";
                    break;
                case "right":
                    if (fontAngle === JV.VERTICAL_ANGLE_INT) {
                        outputPoint[1] = 1 * area[JV.IDX_BOTTOM] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_RIGHT];
                    } else if (fontAngle === JV.ANTI_VERTICAL_ANGLE_INT) {
                        outputPoint[1] = 1 * area[JV.IDX_TOP] + JV.OUTPUT_OFFSET[JV.OFFSET_IDX_RIGHT];
                    } else outputPoint[0] = 1 * area[JV.IDX_RIGHT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_RIGHT];
                    ctx.textAlign="end";
                    break;
                case "center":
                    if (fontAngle === JV.VERTICAL_ANGLE_INT || fontAngle === JV.ANTI_VERTICAL_ANGLE_INT) {
                        outputPoint[1] = (1 * area[JV.IDX_TOP] + 1 * area[JV.IDX_BOTTOM]) / 2;
                    } else outputPoint[0] = (1 * area[JV.IDX_LEFT] + 1 * area[JV.IDX_RIGHT]) / 2;
                    ctx.textAlign="center";
                    break;
            }
        }
        function private_setupAreaV(area, type, fontAngle, fontName, dftFontHeight, outputPoint) {
            let lType = type;
            if (type !== "top" && type !== "bottom" && type !== "center") lType = "top";
            switch (lType) {
                case "top":
                    if (fontAngle === JV.VERTICAL_ANGLE_INT) {
                        outputPoint[0] = 1 * area[JV.IDX_RIGHT] - dftFontHeight - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_TOP];
                    } else if (fontAngle === JV.ANTI_VERTICAL_ANGLE_INT) {
                        outputPoint[0] = 1 * area[JV.IDX_LEFT] + dftFontHeight + JV.OUTPUT_OFFSET[JV.OFFSET_IDX_TOP];
                    } else outputPoint[1] = 1 * area[JV.IDX_TOP] + dftFontHeight + JV.OUTPUT_OFFSET[JV.OFFSET_IDX_TOP];
                    break;
                case "bottom":
                    if (fontAngle === JV.VERTICAL_ANGLE_INT) {
                        outputPoint[0] = 1 * area[JV.IDX_LEFT] + JV.OUTPUT_OFFSET[JV.OFFSET_IDX_BOTTOM];
                    } else if (fontAngle === JV.ANTI_VERTICAL_ANGLE_INT) {
                        outputPoint[0] = 1 * area[JV.IDX_RIGHT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_BOTTOM];
                    } else {
                        outputPoint[1] = 1 * area[JV.IDX_BOTTOM] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_BOTTOM];
                        if (fontName === "宋体") outputPoint[1] = outputPoint[1] - 1;
                    }
                    break;
                case "center":
                    if (fontAngle === JV.VERTICAL_ANGLE_INT) {
                        outputPoint[0] = (1 * area[JV.IDX_LEFT] + 1 * area[JV.IDX_RIGHT] - dftFontHeight) / 2;
                    } else if (fontAngle === JV.ANTI_VERTICAL_ANGLE_INT) {
                        outputPoint[0] = (1 * area[JV.IDX_LEFT] + 1 * area[JV.IDX_RIGHT] + dftFontHeight) / 2;
                    } else {
                        outputPoint[1] = (1 * area[JV.IDX_TOP] + 1 * area[JV.IDX_BOTTOM] + dftFontHeight) / 2;
                        if (fontName === "宋体") outputPoint[1] = outputPoint[1] - 1;
                    }
                    break;
            }
        }
        function private_drawText(val, area, font, control) {
            let dftFontHeight = 12;
            let output = [];
            if (font) {
                dftFontHeight = parseFloat(font[JV.FONT_PROPS[1]]);
                let dftOthers = "";
                let dftFontBold = font[JV.FONT_PROPS[3]];
                if (dftFontBold && dftFontBold === 'T') {
                    dftOthers = "bold " + dftOthers ;
                }
                let dftFontItalic = font[JV.FONT_PROPS[4]];
                if (dftFontItalic && dftFontItalic === 'T') {
                    dftOthers = dftOthers + "italic ";
                }
                ctx.font = dftOthers + dftFontHeight + "px " + font[JV.PROP_NAME];
            }
            if (control) {
                private_setupAreaH(area, control.Horizon, parseInt(font.FontAngle), dftFontHeight, output);
                private_setupAreaV(area, control.Vertical, parseInt(font.FontAngle), font.Name, dftFontHeight, output);
            } else {
                private_setupAreaH(area, "left", parseInt(font.FontAngle), dftFontHeight, output);
                private_setupAreaV(area, "bottom", parseInt(font.FontAngle), font.Name, dftFontHeight, output);
            }
            let w = area[JV.IDX_RIGHT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_RIGHT] - area[JV.IDX_LEFT] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_RIGHT];
            if ( parseInt(font.FontAngle) !== 0) {
                w = area[JV.IDX_BOTTOM] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_BOTTOM] - area[JV.IDX_TOP] - JV.OUTPUT_OFFSET[JV.OFFSET_IDX_TOP];
            }

            function private_drawUnderline() {
                //A. 暂不支持角度; B. 坐标已经translate
                //1. 计算下划线的相关坐标
                let width = ctx.measureText(val).width;
                let height = dftFontHeight;
                // let startX = area[JV.IDX_LEFT], startY = area[JV.IDX_TOP], endX = area[JV.IDX_RIGHT], endY = area[JV.IDX_BOTTOM];
                let startX = 0, startY = 0, endX = width, endY = startY;
                if (control.Horizon === "left") {
                    // 无变化;
                } else if (control.Horizon === "right") {
                    startX = Math.round(startX - width);
                } else {
                    startX = Math.round(startX - width / 2);
                }
                endX = Math.round(startX + width);

                if (control.Vertical === "top") {
                    startY += JV.OUTPUT_OFFSET[JV.IDX_TOP] + JV.OUTPUT_OFFSET[JV.IDX_BOTTOM];
                } else if (control.Vertical === "bottom") {
                    // startY = Math.round(startY);
                    startY += JV.OUTPUT_OFFSET[JV.IDX_TOP] + JV.OUTPUT_OFFSET[JV.IDX_BOTTOM];
                } else {
                    startY = Math.round(height / 2) - JV.OUTPUT_OFFSET[JV.IDX_TOP] - JV.OUTPUT_OFFSET[JV.IDX_BOTTOM];
                    // startY += JV.OUTPUT_OFFSET[JV.IDX_TOP] + JV.OUTPUT_OFFSET[JV.IDX_BOTTOM];
                }
                endY = Math.round(startY);
                //2. 画线
                // ctx.save();
                if ( output[1] !== Math.round(output[1])) {
                    ctx.translate(0,0.5);
                }
                ctx.beginPath();
                ctx.moveTo(startX, startY);
                ctx.lineWidth = 1;
                ctx.strokeStyle = "BLACK";
                ctx.lineTo(endX, endY);
                ctx.stroke();
                // ctx.restore();
            }

            ctx.save();
            ctx.translate(output[0], output[1]);
            if (font[JV.FONT_PROPS[5]] === 'T' && parseInt(font.FontAngle) === 0) {
                private_drawUnderline();
            }
            if (font.FontAngle === JV.VERTICAL_ANGLE) {
                ctx.rotate(Math.PI/2);
            } else if (font.FontAngle === JV.ANTI_VERTICAL_ANGLE) {
                ctx.rotate(-Math.PI/2);
            }
            if (w >= ctx.measureText(val).width) {
                ctx.fillText(val, 0, 0);
            } else {
                while (true) {
                    dftFontHeight--;
                    ctx.font = "" + dftFontHeight + "px " + font[JV.PROP_NAME];
                    if (w >=  ctx.measureText(val).width || dftFontHeight < 6) {
                        ctx.fillText(val, 0, 0);
                        break;
                    }
                }
            }
            ctx.restore();
        }
        function private_drawCellText(cell, fonts, controls) {
            if (cell[JV.PROP_VALUE]) {
                let values = ("" + cell[JV.PROP_VALUE]).split('|');
                let font = null;
                if (typeof cell[JV.PROP_FONT] === "string") {
                    font = fonts[cell[JV.PROP_FONT]];
                } else {
                    font = cell[JV.PROP_FONT];
                }
                //let control = controls[cell[JV.PROP_CONTROL]];
                let control = null;
                if (typeof cell[JV.PROP_CONTROL] === "string") {
                    control = controls[cell[JV.PROP_CONTROL]];
                } else {
                    control = cell[JV.PROP_CONTROL];
                }
                if (control.ShowZero === "F") {
                    if (parseFloat(cell[JV.PROP_VALUE]) === 0.0) {
                        values = [""];
                    }
                }
                let height = cell[JV.PROP_AREA][JV.PROP_BOTTOM] - cell[JV.PROP_AREA][JV.PROP_TOP];
                let area = [cell[JV.PROP_AREA][JV.PROP_LEFT] + me.offsetX, cell[JV.PROP_AREA][JV.PROP_TOP] + me.offsetY, cell[JV.PROP_AREA][JV.PROP_RIGHT] + me.offsetX, cell[JV.PROP_AREA][JV.PROP_BOTTOM] + me.offsetY];
                for (let i = 0; i < values.length; i++) {
                    area[JV.IDX_TOP] = cell[JV.PROP_AREA][JV.PROP_TOP] + i * (height / values.length) + me.offsetY;
                    area[JV.IDX_BOTTOM] = cell[JV.PROP_AREA][JV.PROP_TOP] + (i + 1) * (height / values.length) + me.offsetY;
                    private_drawText(values[i], area, font, control);
                }
            }
        }
        function private_drawLine(cell, ctx, style, styleBorderDest, startP, destP, mergedBand, styles, isNeedMergeBand) {
            ctx.beginPath();
            let destStyle = style;
            if (mergedBand) {
                if (isNeedMergeBand && parseFloat(mergedBand[styleBorderDest]) === parseFloat(cell[JV.PROP_AREA][styleBorderDest])) {
                    destStyle = styles[mergedBand[JV.PROP_STYLE][JV.PROP_ID]];
                }
            }
            ctx.moveTo(cell[JV.PROP_AREA][startP[0]] + me.offsetX, cell[JV.PROP_AREA][startP[1]] + me.offsetY);
            if (destStyle[styleBorderDest] && parseFloat(destStyle[styleBorderDest][JV.PROP_LINE_WEIGHT]) !== 0.0) {
                ctx.lineWidth = 1.0 * destStyle[styleBorderDest][JV.PROP_LINE_WEIGHT];
                ctx.strokeStyle = destStyle[styleBorderDest][JV.PROP_COLOR];
                ctx.lineTo(cell[JV.PROP_AREA][destP[0]] + me.offsetX, cell[JV.PROP_AREA][destP[1]] + me.offsetY);
            }
            ctx.stroke();
        }
        function private_chkIfInMergedBand(mergedBand, cell) {
            let rst = false;
            if (mergedBand && cell) {
                rst = mergedBand[JV.PROP_TOP] <= cell[JV.PROP_AREA][JV.PROP_TOP] && mergedBand[JV.PROP_BOTTOM] >= cell[JV.PROP_AREA][JV.PROP_BOTTOM] &&
                    mergedBand[JV.PROP_LEFT] <= cell[JV.PROP_AREA][JV.PROP_LEFT] && mergedBand[JV.PROP_RIGHT] >= cell[JV.PROP_AREA][JV.PROP_RIGHT];
            }
            return rst;
        }
        function private_drawCell(cell, fonts, styles, controls, mergedBand) {
            ctx.save();
            ctx.translate(0.5,0.5);
            let style = styles[cell[JV.PROP_STYLE]];
            if (style) {
                let isNeedMergeBand = private_chkIfInMergedBand(mergedBand, cell);
                private_drawLine(cell, ctx, style, JV.PROP_TOP, [JV.PROP_LEFT, JV.PROP_TOP],[JV.PROP_RIGHT, JV.PROP_TOP], mergedBand, styles, isNeedMergeBand);
                private_drawLine(cell, ctx, style, JV.PROP_RIGHT, [JV.PROP_RIGHT, JV.PROP_TOP],[JV.PROP_RIGHT, JV.PROP_BOTTOM], mergedBand, styles, isNeedMergeBand);
                private_drawLine(cell, ctx, style, JV.PROP_BOTTOM, [JV.PROP_RIGHT, JV.PROP_BOTTOM],[JV.PROP_LEFT, JV.PROP_BOTTOM], mergedBand, styles, isNeedMergeBand);
                private_drawLine(cell, ctx, style, JV.PROP_LEFT, [JV.PROP_LEFT, JV.PROP_BOTTOM],[JV.PROP_LEFT, JV.PROP_TOP], mergedBand, styles, isNeedMergeBand);
            }
            private_drawCellText(cell, fonts, controls);
            ctx.restore();
        }
        function getIniPageMergeBorder(mergedBand) {
            let rst = {};
            if (mergedBand) {
                rst[JV.PROP_LEFT] = mergedBand[JV.PROP_LEFT];
                rst[JV.PROP_RIGHT] = mergedBand[JV.PROP_RIGHT];
                rst[JV.PROP_TOP] = mergedBand[JV.PROP_TOP];
                rst[JV.PROP_BOTTOM] = mergedBand[JV.PROP_BOTTOM];
                rst[JV.PROP_STYLE] = mergedBand[JV.PROP_STYLE];
            }
            return rst;
        }

        if (pageObj && pageObj.items.length > 0 && canvas && pageObj.items.length >= pageIdx) {
            let page = pageObj.items[pageIdx - 1],
                fonts = pageObj[JV.NODE_FONT_COLLECTION],
                styles = pageObj[JV.NODE_STYLE_COLLECTION],
                controls = pageObj[JV.NODE_CONTROL_COLLECTION],
                mergedBand = pageObj[JV.BAND_PROP_MERGE_BAND];
            let newPageMergeBand = getIniPageMergeBorder(mergedBand);
            if (page[JV.PROP_PAGE_MERGE_BORDER]) {
                newPageMergeBand[JV.PROP_LEFT] = page[JV.PROP_PAGE_MERGE_BORDER][JV.PROP_LEFT];
                newPageMergeBand[JV.PROP_RIGHT] = page[JV.PROP_PAGE_MERGE_BORDER][JV.PROP_RIGHT];
                newPageMergeBand[JV.PROP_TOP] = page[JV.PROP_PAGE_MERGE_BORDER][JV.PROP_TOP];
                newPageMergeBand[JV.PROP_BOTTOM] = page[JV.PROP_PAGE_MERGE_BORDER][JV.PROP_BOTTOM];
            }
            for (let j = 0; j < page.cells.length; j++) {
                let cell = page.cells[j];
                // private_drawCell(cell, fonts, styles, controls, mergedBand);
                private_drawCell(cell, fonts, styles, controls, newPageMergeBand);
            }
        }
    },
    highlightConflictArea: function (pageObj, pageIdx) {
        if (pageObj && pageObj.items.length > 0 && pageObj.items.length >= pageIdx) {
            let private_create_conflict_line = function () {
                return {"LineWeight": "1", "DashStyle": "SOLID", "Color": "RED"};
            };
            let page = pageObj.items[pageIdx - 1],
                styleConflict = {"Left": private_create_conflict_line(), "Right": private_create_conflict_line(), "Top": private_create_conflict_line(), "Bottom": private_create_conflict_line()}
            ;
            pageObj[JV.NODE_STYLE_COLLECTION]["ConflictCell"] = styleConflict;
            let conflictIds = [];
            for (let j = 0; j < page.cells.length; j++) {
                if (conflictIds.indexOf(j) < 0) {
                    let cell1 = page.cells[j];
                    for (let k = j + 1; k < page.cells.length; k++) {
                        let cell2 = page.cells[k];
                        //判断area是否有交叉
                        if (areaConflict(cell1[JV.PROP_AREA], cell2[JV.PROP_AREA])) {
                            conflictIds.push(j);
                            conflictIds.push(k);
                            cell1[JV.PROP_STYLE] = "ConflictCell";
                            cell2[JV.PROP_STYLE] = "ConflictCell";
                        }
                    }
                }
            }
        }
    },
    drawPageBorder: function(rptTpl, canvas, resolution) {
        let me = this;
        let size = me.getReportSizeInPixel(rptTpl, resolution);

        let ctx = canvas.getContext("2d");
        ctx.save();
        ctx.beginPath();
        ctx.translate(0.5,0.5);
        ctx.lineWidth = 1;
        ctx.moveTo(me.offsetX, me.offsetY);
        ctx.lineTo(size[0] + me.offsetX, me.offsetY);
        ctx.lineTo(size[0] + me.offsetX, size[1] + me.offsetY);
        ctx.lineTo(me.offsetX, size[1] + me.offsetY);
        ctx.lineTo(me.offsetX, me.offsetY);
        ctx.stroke();
        ctx.restore();

        ctx.fillStyle="black";
        ctx.fillRect(size[0] + me.offsetX,10 + me.offsetY,10,size[1]);
        ctx.fillRect(10 + me.offsetX,size[1] + me.offsetY,size[0],10);
    },
    getReportSizeInPixel: function(rptTpl, resolution) {
        let rst = rptTpl[JV.NODE_PAGE_INFO][JV.NODE_PAGE_SIZE].slice(0);
        rst[0] = Math.round(resolution[0] * rst[0]);
        rst[1] = Math.round(resolution[0] * rst[1]);
        return rst;
    }
};

function areaConflict(area1,area2) {
    let maxX,maxY,minX,minY,
        w1 = area1[JV.PROP_RIGHT] - area1[JV.PROP_LEFT],
        w2 = area2[JV.PROP_RIGHT] - area2[JV.PROP_LEFT],
        h1 = area1[JV.PROP_BOTTOM] - area1[JV.PROP_TOP],
        h2 = area2[JV.PROP_BOTTOM] - area2[JV.PROP_TOP]
    ;
    //1. 求2个矩形的最小外包矩形
    minX = (area1[JV.PROP_LEFT] <= area2[JV.PROP_LEFT]) ? area1[JV.PROP_LEFT] : area2[JV.PROP_LEFT];
    minY = (area1[JV.PROP_TOP] <= area2[JV.PROP_TOP]) ? area1[JV.PROP_TOP] : area2[JV.PROP_TOP];
    maxX = (area1[JV.PROP_RIGHT] >= area2[JV.PROP_RIGHT]) ? area1[JV.PROP_RIGHT] : area2[JV.PROP_RIGHT];
    maxY = (area1[JV.PROP_BOTTOM] >= area2[JV.PROP_BOTTOM]) ? area1[JV.PROP_BOTTOM] : area2[JV.PROP_BOTTOM];
    //2. 判断外包矩形与高与宽是否小于俩矩形的高与宽之和(这里的边界条件是小于，等于的话不算；而且是高与宽都得符合条件!)
    return (maxX - minX < w1 + w2 && maxY - minY < h1 + h2);
}