-- 工程项目管理系统 - 数据库初始化脚本
-- 基于docs/example.xls中的工程项目管理台账
-- 创建时间: 2026-01-25

-- ========================================
-- 1. 创建数据库（如果不存在）
-- ========================================
CREATE DATABASE IF NOT EXISTS project_manager
    DEFAULT CHARACTER SET utf8mb4
    DEFAULT COLLATE utf8mb4_unicode_ci;

USE project_manager;

-- ========================================
-- 2. 创建用户表
-- ========================================
CREATE TABLE IF NOT EXISTS users (
    id INT PRIMARY KEY AUTO_INCREMENT COMMENT '用户ID',
    username VARCHAR(50) UNIQUE NOT NULL COMMENT '用户名',
    password_hash VARCHAR(255) NOT NULL COMMENT '密码哈希',
    real_name VARCHAR(100) NOT NULL COMMENT '真实姓名',
    department VARCHAR(50) NOT NULL COMMENT '部门（市场部/技术部/财务部等）',
    role ENUM('admin', 'market', 'other') NOT NULL COMMENT '角色（admin/market/other）',
    email VARCHAR(100) UNIQUE COMMENT '邮箱',
    phone VARCHAR(20) COMMENT '电话',
    is_active BOOLEAN DEFAULT TRUE COMMENT '是否激活',
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
    INDEX idx_users_username (username),
    INDEX idx_users_department (department),
    INDEX idx_users_role (role)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户表';

-- ========================================
-- 3. 创建项目表（基于Excel结构）
-- ========================================
CREATE TABLE IF NOT EXISTS projects (
    id INT PRIMARY KEY AUTO_INCREMENT COMMENT '项目ID',
    project_no VARCHAR(50) UNIQUE NOT NULL COMMENT '合同编号',
    power_contract_no VARCHAR(100) COMMENT '供电局项目合同编号',
    name VARCHAR(200) NOT NULL COMMENT '项目名称',
    subitem_count INT DEFAULT 0 COMMENT '子项个数',
    subitem_code VARCHAR(50) COMMENT '子项编码',
    total_investment DECIMAL(15,2) COMMENT '项目总投资（万元）',
    contract_amount DECIMAL(15,2) COMMENT '中标合同金额（万元）',
    warranty_ratio DECIMAL(5,2) COMMENT '质保金比例',
    settlement_amount DECIMAL(15,2) COMMENT '结算金额（万元）',
    total_cost_estimated DECIMAL(15,2) COMMENT '总成本测算',
    voltage_level VARCHAR(50) COMMENT '工程电压等级',
    engineering_type VARCHAR(50) COMMENT '工程类别（基建/业扩/客户/营销/检修）',
    owner_unit VARCHAR(200) COMMENT '业主单位',
    owner_contact VARCHAR(200) COMMENT '业主联系人及电话',
    bidding_type VARCHAR(50) COMMENT '中标形式',
    signing_date DATE COMMENT '签订日期',
    start_date DATE COMMENT '开工日期',
    planned_end_date DATE COMMENT '计划竣工日期',
    actual_end_date DATE COMMENT '实际竣工日期',
    warranty_amount DECIMAL(15,2) DEFAULT 0 COMMENT '质保金（万元）',
    warranty_expiry_date DATE COMMENT '质保期截止日',
    actual_warranty_refund_date DATE COMMENT '实际退质保金日期',
    project_department VARCHAR(100) COMMENT '所属项目部',
    project_leader VARCHAR(200) COMMENT '项目负责人及电话',
    payment_method TEXT COMMENT '工程款拨付方式',
    total_cost_control DECIMAL(15,2) COMMENT '总体成本（控制）',
    is_adjusted ENUM('是', '否') DEFAULT '否' COMMENT '是否调整',
    labor_cost_control DECIMAL(15,2) COMMENT '其中：人工成本（控制）',
    labor_cost_planned DECIMAL(15,2) COMMENT '农民工工资（按进度计划）',
    labor_cost_paid DECIMAL(15,2) COMMENT '农民工工资（实付）',
    material_cost_control DECIMAL(15,2) COMMENT '其中：乙供材料费（控制）',
    material_cost_payable DECIMAL(15,2) COMMENT '应付材料费（按收款比例）',
    material_cost_actual DECIMAL(15,2) COMMENT '实际发生材料费',
    material_cost_paid DECIMAL(15,2) COMMENT '实际支付材料费',
    other_cost_control DECIMAL(15,2) COMMENT '其中：其他费用（控制）',
    other_cost_payable DECIMAL(15,2) COMMENT '应付其他费',
    other_cost_actual DECIMAL(15,2) COMMENT '实际其他费用',
    tax_amount DECIMAL(15,2) COMMENT '税金',
    profit DECIMAL(15,2) COMMENT '利润（万元）',
    actual_profit DECIMAL(15,2) COMMENT '实际利润（万元）',
    cost_settlement_amount DECIMAL(15,2) COMMENT '成本结算金额（万元）',
    cumulative_progress DECIMAL(5,2) COMMENT '累计进度',
    receivable_amount DECIMAL(15,2) COMMENT '应收款（完成进度款）',
    invoice_amount DECIMAL(15,2) COMMENT '开票金额（万元）',
    actual_receipt_amount DECIMAL(15,2) COMMENT '实际收款金额（万元）',
    receipt_completion_rate DECIMAL(5,2) COMMENT '实际收款完成率',
    payable_amount DECIMAL(15,2) COMMENT '应付款金额（万元）',
    actual_payment_amount DECIMAL(15,2) COMMENT '实际付款金额（万元）',
    unpaid_amount DECIMAL(15,2) COMMENT '未收款（万元）',
    payment_completion_rate DECIMAL(5,2) COMMENT '实际付款完成率',
    labor_debt_amount DECIMAL(15,2) COMMENT '民工工资清欠金额（万元）',
    settlement_cost_amount DECIMAL(15,2) COMMENT '结算后成本测算金额',
    settlement_labor_cost DECIMAL(15,2) COMMENT '结算人工费',
    settlement_material_cost DECIMAL(15,2) COMMENT '结算材料费',
    settlement_other_cost DECIMAL(15,2) COMMENT '结算其他费',
    due_settlement_count INT COMMENT '到期应结算项目个数',
    unsettlement_count INT COMMENT '到期未完成结算个数',
    problems TEXT COMMENT '存在的问题',
    suggestions TEXT COMMENT '建议措施',
    remarks TEXT COMMENT '备注',
    status VARCHAR(50) DEFAULT '新建' COMMENT '项目状态',
    created_by INT NOT NULL COMMENT '创建人ID',
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
    FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE RESTRICT,
    INDEX idx_projects_project_no (project_no),
    INDEX idx_projects_engineering_type (engineering_type),
    INDEX idx_projects_project_department (project_department),
    INDEX idx_projects_status (status),
    INDEX idx_projects_created_by (created_by),
    INDEX idx_projects_signing_date (signing_date),
    INDEX idx_projects_planned_end_date (planned_end_date),
    INDEX idx_projects_type_status (engineering_type, status)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='工程项目表';

-- ========================================
-- 4. 插入初始管理员用户
-- ========================================
INSERT INTO users (username, password_hash, real_name, department, role, email, phone) VALUES
('admin', '$2b$12$LQv3c1yqBWVHxkd0LHAkCOYz6TtxMQJqhN8/LewY5GyW5q7K1U1.2', '系统管理员', '管理部', 'admin', 'admin@example.com', '13800000000')
ON DUPLICATE KEY UPDATE username=username;

-- ========================================
-- 5. 创建视图：项目统计视图
-- ========================================
CREATE OR REPLACE VIEW project_statistics AS
SELECT
    engineering_type AS 工程类别,
    COUNT(*) AS 项目总数,
    SUM(contract_amount) AS 合同总金额,
    SUM(actual_receipt_amount) AS 实际收款总金额,
    SUM(actual_payment_amount) AS 实际付款总金额,
    AVG(receipt_completion_rate) AS 平均收款完成率,
    AVG(payment_completion_rate) AS 平均付款完成率,
    SUM(CASE WHEN status = '新建' THEN 1 ELSE 0 END) AS 新建项目,
    SUM(CASE WHEN status = '进行中' THEN 1 ELSE 0 END) AS 进行中项目,
    SUM(CASE WHEN status = '已完成' THEN 1 ELSE 0 END) AS 已完成项目
FROM projects
GROUP BY engineering_type;

-- ========================================
-- 6. 创建视图：项目详情视图
-- ========================================
CREATE OR REPLACE VIEW project_detail_view AS
SELECT
    p.id,
    p.project_no,
    p.name,
    p.engineering_type,
    p.contract_amount,
    p.actual_receipt_amount,
    p.actual_payment_amount,
    p.receipt_completion_rate,
    p.payment_completion_rate,
    p.status,
    p.project_department,
    p.project_leader,
    p.signing_date,
    p.planned_end_date,
    p.actual_end_date,
    u.real_name AS created_by_name,
    p.created_at,
    p.updated_at
FROM projects p
LEFT JOIN users u ON p.created_by = u.id;

-- ========================================
-- 7. 创建存储过程：更新项目收款完成率
-- ========================================
DELIMITER //
CREATE PROCEDURE update_receipt_completion_rate(IN project_id INT)
BEGIN
    UPDATE projects
    SET receipt_completion_rate = CASE
        WHEN contract_amount > 0 THEN ROUND(actual_receipt_amount / contract_amount * 100, 2)
        ELSE 0
    END
    WHERE id = project_id;
END //
DELIMITER ;

-- ========================================
-- 8. 创建存储过程：更新项目付款完成率
-- ========================================
DELIMITER //
CREATE PROCEDURE update_payment_completion_rate(IN project_id INT)
BEGIN
    UPDATE projects
    SET payment_completion_rate = CASE
        WHEN payable_amount > 0 THEN ROUND(actual_payment_amount / payable_amount * 100, 2)
        ELSE 0
    END
    WHERE id = project_id;
END //
DELIMITER ;

-- ========================================
-- 9. 创建触发器：插入项目前自动生成合同编号
-- ========================================
DELIMITER //
CREATE TRIGGER before_project_insert
BEFORE INSERT ON projects
FOR EACH ROW
BEGIN
    IF NEW.project_no IS NULL OR NEW.project_no = '' THEN
        SET NEW.project_no = CONCAT('PRJ', DATE_FORMAT(NOW(), '%Y%m%d'), LPAD((SELECT COUNT(*) + 1 FROM projects), 4, '0'));
    END IF;
END //
DELIMITER ;

-- ========================================
-- 10. 创建触发器：更新项目时自动更新时间戳
-- ========================================
DELIMITER //
CREATE TRIGGER before_project_update
BEFORE UPDATE ON projects
FOR EACH ROW
BEGIN
    SET NEW.updated_at = NOW();
END //
DELIMITER ;

-- ========================================
-- 完成
-- ========================================
-- 数据库初始化完成
-- 执行 backend/config/import-excel-data.py 来导入Excel数据